Faculty Profiles - KEBUKAWA YOKO

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KEBUKAWA YOKO

Organization

School of Science Associate Professor

Contact information

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Degree

Doctor of Science ( Osaka University )

Research Areas

Natural Science / Space and planetary sciences

Education

Osaka University Graduate School, Division of Natural Science Department of Earth and Space Science

2006.4 - 2009.3

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Country： Japan

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Tokyo Institute of Technology Graduate School, Division of Science and Engineering Department of Earth and Planetary Sciences

2004.4 - 2006.3

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Country： Japan

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Research History

Institute of Science Tokyo Department of Earth and Planetary Sciences Associate Professor

2023.9

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Yokohama National University Graduate school of Engineering Science Department of Chemistry, Chemical Engineering and Life Science Associate Professor

2018.4 - 2023.8

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Yokohama National University College of Engineering Science Department of Chemistry, Chemical Engineering and Life Science Associate Professor

2014.4 - 2023.8

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Yokohama National University Faculty of Engineering Division of Materials Science and Chemical Engineering Associate Professor

2014.4 - 2023.8

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Yokohama National University Graduate School of Engineering Department of Materials Science and Engineering Associate Professor

2014.4 - 2023.8

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Hokkaido University Department of Natural History Sciences JSPS fellow (PD)

2013.4 - 2014.3

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Hokkaido University Department of Natural History Sciences Research Fellowship for Young Scientists of the Japan Society for the Promotion of Science

2013.4 - 2014.3

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Carnegie Institution of Washington Geophysical Laboratory JSPS fellow

2011.6 - 2013.3

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Carnegie Institution of Washington Geophysical Laboratory Postdoctoral Fellow

2009.6 - 2011.6

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Osaka University Graduate School of Science Visiting Researcher

2009.4 - 2009.6

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Osaka University Graduate School of Science JSPS fellow (DC2)

2007.4 - 2009.3

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Osaka University Graduate School of Science Research Fellowship for Young Scientists of the Japan Society for the Promotion of Science

2007.4 - 2009.3

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Professional Memberships

Geochemical Society

2021.3

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American Chemical Society (ACS)

2020.3

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生命の起源および進化学会

2017

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宇宙生物科学会

2017

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The Japan Society for Analytical Chemistry

2014.5

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The Geochemical Society of Japan

2013.7

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日本地球惑星科学連合

2009.1

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Meteoritical Society

2008.4

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The Japanese Society for Planetary Sciences

2006.7

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Committee Memberships

日本分析化学会誌「ぶんせき」編集幹事

2018.4 - 2019.3

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Committee type：Other

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Papers

Mineralogy of terminal grains recovered from the Tanpopo capture panel onboard the International Space Station

Takaaki Noguchi, Akira Miyake, Hikaru Yabuta, Yoko Kebukawa, Hiroki Suga, Makoto Tabata, Kyoko Okudaira, Akihiko Yamagishi, H. Yano

Meteoritics & Planetary Science 2025.2

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Publishing type：Research paper (scientific journal) Publisher：Wiley

Abstract

The Tanpopo experiment is Japan's first astrobiology mission aboard the Japanese Experiment Module Exposed Facility on the International Space Station. The Tanpopo‐1 mission exposed silica aerogel panels to low Earth orbit from 2015 to 2016 to capture micrometeoroids. We identified an impact track measuring approximately 8 mm long, which contained terminal grains in the silica aerogel panel oriented toward space. The impact track exhibited a bulbous cavity with two thin, straight tracks branching from it, each preserving a terminal grain at their ends. The terminal grains were extracted from the silica aerogel and analyzed using scanning transmission electron microscopy and scanning transmission X‐ray microscopy to investigate their X‐ray absorption near‐edge structure (STXM‐XANES). Both grains are Fe‐bearing and relatively homogeneous orthopyroxene crystals (En_88.4±0.4 and En_88.2±1.8). The recovery of Fe‐bearing low‐Ca pyroxene aligns with previous studies of micrometeoroids captured in LEO. Micrometeoroids containing Fe‐bearing olivine and low‐Ca pyroxene are likely abundant in LEO.

DOI： 10.1111/maps.14327

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Emergence of Optical Activity and Surface Morphology Changes in Racemic Amino Acid Films Under Circularly Polarized Lyman‐α Light Irradiation

Masahiro Kobayashi, Jun‐ichi Takahashi, Hiroshi Ota, Koichi Matsuo, Mohamed I. A. Ibrahim, Taketoshi Minato, Gen Fujimori, Masahiro Katoh, Kensei Kobayashi, Yoko Kebukawa, Hiroaki Nakamura

Chirality 36 ( 11 ) 2024.11

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Publishing type：Research paper (scientific journal) Publisher：Wiley

ABSTRACT

The homochirality of life remains one of the most enigmatic issues in the study of the origin of life. A proposed mechanism for symmetry breaking involves irradiation by circularly polarized light (CPL). To investigate the photoreaction of amino acids under CPL irradiation, a vacuum ultraviolet (VUV) CPL irradiation system was developed at the synchrotron light source UVSOR‐III. Hydrogen Lyman‐α CPL (121.6 nm) is considered a potential asymmetric source in space. Therefore, racemic alanine film samples were irradiated with Lyman‐α CPL to explore the photoreaction of biomolecules. Circular dichroism (CD) spectra measurements revealed that irradiation with right‐ (left‐) handed CPL induced a positive (negative) anisotropy factor g in the wavelength range of 180–240 nm. However, the spectra differed from those of enantiopure alanine, exhibiting broad wavelength ranges and no sign change. Liquid chromatography‐mass spectrometry (LC–MS) measurements indicate formation of larger molecules, such as oligomeric alanine adducts or modified oligomers after the Lyman‐α CPL irradiation. Additionally, CPL irradiation considerably changes the microstructure of the alanine film surface, leading to the formation of circular network aggregates on the scale of 100 nm. The morphology changes in the alanine film and/or the formation of the larger molecules could be possible causes of the modified anisotropy factor spectra compared to those of enantiopure alanine. These findings highlight the need for further research on the photoreaction of biomolecules in solid states under VUV CPL irradiation, particularly in the photoionization energy range, to validate the cosmic scenario of homochirality.

DOI： 10.1002/chir.70004

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Variations of organic functional chemistry in carbonaceous matter from the asteroid 162173 Ryugu

Bradley De Gregorio, George D. Cody, Rhonda M. Stroud, A. L. David Kilcoyne, Scott Sandford, Corentin Le Guillou, Larry R. Nittler, Jens Barosch, Hikaru Yabuta, Zita Martins, Yoko Kebukawa, Taiga Okumura, Minako Hashiguchi, Shohei Yamashita, Yasuo Takeichi, Yoshio Takahashi, Daisuke Wakabayashi, Cécile Engrand, Laure Bejach, Lydie Bonal, Eric Quirico, Laurent Remusat, Jean Duprat, Maximilien Verdier-Paoletti, Smail Mostefaoui, Mutsumi Komatsu, Jérémie Mathurin, Alexandre Dazzi, Ariane Deniset-Besseau, Emmanuel Dartois, Yusuke Tamenori, Hiroki Suga, Gilles Montagnac, Kanami Kamide, Miho Shigenaka, Megumi Matsumoto, Yuma Enokido, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Tomohiro Usui, Masanao Abe, Tatsuaki Okada, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda

Nature Communications 15 ( 1 ) 2024.8

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

Abstract

Primordial carbon delivered to the early earth by asteroids and meteorites provided a diverse source of extraterrestrial organics from pre-existing simple organic compounds, complex solar-irradiated macromolecules, and macromolecules from extended hydrothermal processing. Surface regolith collected by the Hayabusa2 spacecraft from the carbon-rich asteroid 162173 Ryugu present a unique opportunity to untangle the sources and processing history of carbonaceous matter. Here we show carbonaceous grains in Ryugu can be classified into three main populations defined by spectral shape: Highly aromatic (HA), Alkyl-Aromatic (AA), and IOM-like (IL). These carbon populations may be related to primordial chemistry, since C and N isotopic compositions vary between the three groups. Diffuse carbon is occasionally dominated by molecular carbonate preferentially associated with coarse-grained phyllosilicate minerals. Compared to related carbonaceous meteorites, the greater diversity of organic functional chemistry in Ryugu indicate the pristine condition of these asteroid samples.

DOI： 10.1038/s41467-024-51731-w

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Other Link： https://www.nature.com/articles/s41467-024-51731-w
Raman spectroscopy of Ryugu particles and their extracted residues: Fluorescence background characteristics and similarities to CI chondrites

Mutsumi Komatsu, Hikaru Yabuta, Yoko Kebukawa, Lydie Bonal, Eric Quirico, Timothy J. Fagan, George D. Cody, Jens Barosch, Laure Bejach, Emmanuel Dartois, Alexandre Dazzi, Bradley De Gregorio, Ariane Deniset‐Besseau, Jean Duprat, Cecile Engrand, Minako Hashiguchi, Zita Martins, Jérémie Mathurin, Gilles Montagnac, Smail Mostefaoui, Larry R. Nittler, Takuji Ohigashi, Taiga Okumura, Laurent Rémusat, Scott Sandford, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier‐Paoletti, Shohei Yamashita, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Tomohiro Usui, Masanao Abe, Tatsuaki Okada, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda

Meteoritics & Planetary Science 2024.7

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Publishing type：Research paper (scientific journal)

DOI： 10.1111/maps.14234

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Microscale hydrogen, carbon, and nitrogen isotopic diversity of organic matter in asteroid Ryugu

Larry R Nittler, Jens Barosch, Katherine Burgess, Rhonda M Stroud, Jianhua Wang, Hikaru Yabuta, Yuma Enokido, Megumi Matsumoto, Tomoki Nakamura, Yoko Kebukawa, Shohei Yamashita, Yoshio Takahashi, Laure Bejach, Lydie Bonal, George D Cody, Emmanuel Dartois, Alexandre Dazzi, Bradley De Gregorio, Ariane Deniset-Besseau, Jean Duprat, Cécile Engrand, Minako Hashiguchi, A.L. David Kilcoyne, Mutsumi Komatsu, Zita Martins, Jérémie Mathurin, Gilles Montagnac, Smail Mostefaoui, Taiga Okumura, Eric Quirico, Laurent Remusat, Scott Sandford, Miho Shigenaka, Hiroki Suga, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier-Paoletti, Daisuke Wakabayashi, Masanao Abe, Kanami Kamide, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Tomohiro Usui, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda

Earth and Planetary Science Letters 637 118719 - 118719 2024.7

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Publishing type：Research paper (scientific journal) Publisher：Elsevier BV

DOI： 10.1016/j.epsl.2024.118719

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AFM-IR nanospectroscopy of nanoglobule-like particles in Ryugu samples returned by the Hayabusa2 mission

Jérémie Mathurin, Laure Bejach, Emmanuel Dartois, Cécile Engrand, Alexandre Dazzi, Ariane Deniset-Besseau, Jean Duprat, Yoko Kebukawa, Hikaru Yabuta, Lydie Bonal, Eric Quirico, Christophe Sandt, Ferenc Borondics, Jens Barosch, Pierre Beck, D. George Cody, T. Brad De Gregorio, Minako Hashiguchi, A.L. David Kilcoyne, Mutsumi Komatsu, Zita Martins, Megumi Matsumoto, Gilles Montagnac, Smail Mostefaoui, R. Larry Nittler, Takuji Ohigashi, Taiga Okumura, T.H. Van Phan, Laurent Remusat, Scott Sandford, Miho Shigenaka, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier-Paoletti, Shohei Yamashita, Tomoki Nakamura, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Takaaki Noguchi, Hiroshi Naraoka, Ryuji Okazaki, Kanako Sakamoto, Hisayoshi Yurimoto, Masanao Abe, Kanami Kamide, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Shogo Tachibana, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa

Astronomy & Astrophysics 2024.2

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Publishing type：Research paper (scientific journal) Publisher：EDP Sciences

The JAXA Hayabusa2 mission returned well-preserved samples collected from the carbonaceous asteroid Ryugu, providing unique non-terrestrially weathered samples from a known parent body. This work aims to provide a better understanding of the formation and evolution of primitive asteroidal matter by studying the fine scale association of organic matter and minerals in Ryugu samples. We characterized the samples by IR nanospectroscopy using the AFM-IR technique. This technique overcomes the diffraction limit (of several microns) of conventional infrared microspectroscopy (µ-FTIR). The samples were mapped in the mid-IR range at a lateral spatial resolution about a hundred times better than with µ-FTIR. This provided us with unique in situ access to the distribution of the different infrared signatures of organic components at the sub-micron scale present in the Ryugu whole-rock samples as well as to the characterization of the compositional variability of Ryugu in the insoluble organic matter (IOM) chemically extracted from the Ryugu samples. The AFM-IR maps of whole-rock particles and IOM residues from Ryugu samples were recorded with a lateral resolution of tens of nanometers. Spectra were recorded in the 1900-900 cm$^−1$ spectral range by AFM-IR (Icon-IR) for all samples, and additional spectra were recorded from 2700 to 4000 cm$^−1$ for one IOM sample by an optical photothermal IR (O-PTIR) technique using a mIRage$^ textregistered $ IR microscope. Organic matter is present in two forms in the whole-rock samples: as a diffuse phase intermixed with the phyllosilicate matrix and as individual organic nanoparticles. We identify the Ryugu organic nanoparticles as nanoglobule-like inclusions texturally resembling nanoglobules present in primitive meteorites. Using AFM-IR, we record for the first time the infrared spectra of Ryugu organic nanoparticles that clearly show enhanced carbonyl (C=O) and CH contributions with respect to the diffuse organic matter in Ryugu whole-rock and IOM residue.

DOI： 10.1051/0004-6361/202347435

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Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro‐ to nano‐scale

Rhonda M. Stroud, Jens Barosch, Lydie Bonal, Katherine Burgess, George D. Cody, Bradley T. De Gregorio, Luke Daly, Emmanuel Dartois, Elena Dobrică, Jean Duprat, Cecile Engrand, Dennis Harries, Minako Hashiguchi, Hope Ishii, Yoko Kebukawa, A. David Kilcoyne, Falko Langenhorst, Martin R. Lee, Larry R. Nittler, Eric Quirico, Taiga Okumura, Laurent Remusat, Scott Sandford, Hikaru Yabuta, Masanao Abe, Neyda M. Abreu, Paul A. J. Bagot, Pierre Beck, Laure Bejach, Phil A. Bland, John C. Bridges, Brittany A. Cymes, Alexandre Dazzi, Francisco de la Peña, Ariane Deniset‐Besseau, Satomi Enju, Yuma Enokido, David R. Frank, Jennifer Gray, Mitsutaka Haruta, Satoshi Hata, Leon Hicks, Yohei Igami, Damien Jacob, Kanami Kamide, Mutsumi Komatsu, Sylvain Laforet, Hugues Leroux, Corentin Le Guillou, Zita Martins, Maya Marinova, James Martinez, Jérémie Mathurin, Megumi Matsumoto, Toru Matsumoto, Junya Matsuno, Samuel McFadzean, Tatsuhiro Michikami, Itaru Mitsukawa, Akira Miyake, Masaaki Miyahara, Akiko Miyazaki, Gilles Montagnac, Smail Mostefaoui, Tomoki Nakamura, Aiko Nakato, Hiroshi Naraoka, Yusuke Nakauchi, Satoru Nakazawa, Masahiro Nishimura, Takaaki Noguchi, Kenta Ohtaki, Takuji Ohigashi, Tatsuaki Okada, Shota Okumura, Ryuji Okazaki, Thi H. V. Phan, Rolando Rebois, Kanako Sakamoto, Takanao Saiki, Hikaru Saito, Yusuke Seto, Miho Shigenaka, William Smith, Hiroki Suga, Mingqi Sun, Shogo Tachibana, Yoshio Takahashi, Yasuo Takeichi, Akihisa Takeuchi, Aki Takigawa, Yusuke Tamenori, Satoshi Tanaka, Fuyuto Terui, Michelle S. Thompson, Naotaka Tomioka, Akira Tsuchiyama, Yuichi Tsuda, Kentaro Uesugi, Masayuki Uesugi, Tomohiro Usui, Maximilien Verdier‐Paoletti, Daisuke Wakabayashi, Sei‐ichiro Watanabe, Toru Yada, Shohei Yamashita, Masahiro Yasutake, Kasumi Yogata, Makoto Yoshikawa, Hisayoshi Yurimoto, Pierre‐M. Zanetta, Thomas Zega, Michael E. Zolensky

Meteoritics & Planetary Science 2024.1

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Publishing type：Research paper (scientific journal) Publisher：Wiley

Abstract

Transmission electron microscopy analyses of Hayabusa2 samples show that Ryugu organic matter exhibits a range of morphologies, elemental compositions, and carbon functional chemistries consistent with those of carbonaceous chondrites that have experienced low‐temperature aqueous alteration. Both nanoglobules and diffuse organic matter are abundant. Non‐globular organic particles are also present, and including some that contain nanodiamond clusters. Diffuse organic matter is finely distributed in and around phyllosilicates, forms coatings on other minerals, and is also preserved in vesicles in secondary minerals such as carbonate and pyrrhotite. The average elemental compositions determined by energy‐dispersive spectroscopy of extracted, demineralized insoluble organic matter samples A0107 and C0106 are C₁₀₀N₃O₉S₁ and C₁₀₀N₃O₇S₁, respectively, with the difference in O/C slightly outside the difference in the standard error of the mean. The functional chemistry of the nanoglobules varies from mostly aromatic C=C to mixtures of aromatic C=C, ketone C=O, aliphatic (CH_n), and carboxyl (COOH) groups. Diffuse organic matter associated with phyllosilicates has variable aromatic C, ketone and carboxyl groups, and some localized aliphatics, but is dominated by molecular carbonate (CO₃) absorption, comparable to prior observations of clay‐bound organic matter in CI meteorites.

DOI： 10.1111/maps.14128

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Aqueous breakdown of aspartate and glutamate to n-ω-amino acids on the parent bodies of carbonaceous chondrites and asteroid Ryugu

Yamei Li, Hiroyuki Kurokawa, Yasuhito Sekine, Yoko Kebukawa, Yuko Nakano, Norio Kitadai, Naizhong Zhang, Xiaofeng Zang, Yuichiro Ueno, Gen Fujimori, Ryuhei Nakamura, Kosuke Fujishima, Junko Isa

Science Advances 9 ( 50 ) 2023.12

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Publishing type：Research paper (scientific journal) Publisher：American Association for the Advancement of Science (AAAS)

Amino acids in carbonaceous chondrites may have seeded the origin of life on Earth and possibly elsewhere. Recently, the return samples from a C-type asteroid Ryugu were found to contain amino acids with a similar distribution to Ivuna-type CI chondrites, suggesting the potential of amino acid abundances as molecular descriptors of parent body geochemistry. However, the chemical mechanisms responsible for the amino acid distributions remain to be elucidated particularly at low temperatures (<50°C). Here, we report that two representative proteinogenic amino acids, aspartic acid and glutamic acid, decompose to β-alanine and γ-aminobutyric acid, respectively, under simulated geoelectrochemical conditions at 25°C. This low-temperature conversion provides a plausible explanation for the enrichment of these two n-ω-amino acids compared to their precursors in heavily aqueously altered CI chondrites and Ryugu’s return samples. The results suggest that these heavily aqueously altered samples originated from the water-rich mantle of their water/rock differentiated parent planetesimals where protein α-amino acids were decomposed.

DOI： 10.1126/sciadv.adh7845

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Compositional heterogeneity of insoluble organic matter extracted from asteroid Ryugu samples

Eric Quirico, Lydie Bonal, Yoko Kebukawa, Kana Amano, Hikaru Yabuta, Van T. H. Phan, Pierre Beck, Laurent Rémusat, Emmanuel Dartois, Cecile Engrand, Zita Martins, Laure Bejach, Alexandre Dazzi, Ariane Deniset‐Besseau, Jean Duprat, Jérémie Mathurin, Gilles Montagnac, Jens Barosch, George D. Cody, Bradley De Gregorio, Yuma Enokido, Minako Hashiguchi, Kanami Kamide, David Kilcoyne, Mutsumi Komatsu, Megumi Matsumoto, Smail Mostefaoui, Larry Nittler, Takuji Ohigashi, Taiga Okumura, Scott Sandford, Miho Shigenaka, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier‐Paoletti, Daisuke Wakabayashi, Shohei Yamashita, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Hisayoshi Yurimoto, Kanako Sakamoto, Shogo Tachibana, Sei‐Ichiro Watanabe, Yuichi Tsuda, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohitro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa

Meteoritics & Planetary Science 2023.11

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Publishing type：Research paper (scientific journal) Publisher：Wiley

Abstract

We report a Fourier transform infrared analysis of functional groups in insoluble organic matter (IOM) extracted from a series of 100–500 μm Ryugu grains collected during the two touchdowns of February 22 and July 11, 2019. IOM extracted from most of the samples is very similar to IOM in primitive CI, CM, and CR chondrites, and shows that the extent of thermal metamorphism in Ryugu regolith was, at best, very limited. One sample displays chemical signatures consistent with a very mild heating, likely due to asteroidal collision impacts. We also report a lower carbonyl abundance in Ryugu IOM samples compared to primitive chondrites, which could reflect the accretion of a less oxygenated precursor by Ryugu. The possible effects of hydrothermal alteration and terrestrial weathering are also discussed. Last, no firm conclusions could be drawn on the origin of the soluble outlier phases, observed along with IOM in this study and in the preliminary analysis of Ryugu samples. However, it is clear that the HF/HCl residues presented in this publication are a mix between IOM and the nitrogen‐rich outlier phase.

DOI： 10.1111/maps.14097

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The thermal history of Ryugu based on Raman characterization of Hayabusa2 samples Reviewed

Lydie Bonal, Eric Quirico, Gilles Montagnac, Mutsumi Komatsu, Yoko Kebukawa, Hikaru Yabuta, Kana Amano, Jens Barosch, Laure Bejach, George D. Cody, Emmanuel Dartois, Alexandre Dazzi, Bradley De Gregorio, Ariane Deniset-Besseau, Jean Duprat, Cécile Engrand, Minako Hashiguchi, Kanami Kamide, David Kilcoyne, Zita Martins, Jérémie Mathurin, Smail Mostefaoui, Larry Nittler, Takuji Ohigashi, Taiga Okumura, Laurent Remusat, Scott Sandford, Miho Shigenaka, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier-Paoletti, Shohei Yamashita, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Hisayoshi Yurimoto, Shogo Tachibana, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Kanako Sakamoto, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makota Yoshikawa

Icarus 115826 - 115826 2023.10

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Publishing type：Research paper (scientific journal) Publisher：Elsevier BV

DOI： 10.1016/j.icarus.2023.115826

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Sample return system of OKEANOS—The solar power sail for Jupiter Trojan exploration Reviewed

Yuki Takao, Osamu Mori, Jun Matsumoto, Toshihiro Chujo, Shota Kikuchi, Yoko Kebukawa, Motoo Ito, Tatsuaki Okada, Jun Aoki, Kazuhiko Yamada, Takahiro Sawada, Shigeo Kawasaki, Shuya Kashioka, Yusuke Oki, Takanao Saiki, Jun’ichiro Kawaguchi

Acta Astronautica 2023.9

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Publishing type：Research paper (scientific journal) Publisher：Elsevier BV

DOI： 10.1016/j.actaastro.2023.08.044

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Complex mixture of organic matter in a xenolithic clast from the Zag meteorite revealed by coordinated analyses using AFM-IR, NanoSIMS and STXM/XANES Reviewed

Yoko Kebukawa, Jérémie Mathurin, Emmanuel Dartois, Alexandre Dazzi, Ariane Deniset-Besseau, Jean Duprat, Laurent Remusat, Takaaki Noguchi, Akira Miyake, Yohei Igami, Maximilien Verdier Paoletti, Michael E. Zolensky, Cécile Engrand, Christophe Sandt, Ferenc Borondics, Shohei Yamashita, Daisuke Wakabayashi, Yasuo Takeichi, Yoshio Takahashi

Icarus 400 2023.8

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Authorship：Lead author,　Corresponding author Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.icarus.2023.115582

Scopus

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Infrared absorption spectra from organic matter in the asteroid Ryugu samples: Some unique properties compared to unheated carbonaceous chondrites. Reviewed

Kebukawa Y, Quirico E, Dartois E, Yabuta H, Bejach L, Bonal L, Dazzi A, Deniset-Besseau A, Duprat J, Engrand C, Mathurin J, Barosch J, Cody G. D, De Gregorio B, Hashiguchi M, Kamide K, Kilcoyne D, Komatsu M, Martins Z, Montagnac G, Mostefaoui S, Nittler L. R, Ohigashi T, Okumura T, Remusat L, Sandford S, Shigenaka M, Stroud R, Suga H, Takahashi Y, Takeichi Y, Tamenori Y, Verdier-Paoletti M, Wakabayashi D, Yamashita S, Yurimoto H, Nakamura T, Noguchi T, Okazaki R, Naraoka H, Sakamoto K, Tachibana S, Yada T, Nishimura M, Nakato A, Miyazaki A, Yogata K, Abe M, Okada T, Usui T, Yoshikawa M, Saiki T, Tanaka S, Terui F, Nakazawa S, Watanabe S, Tsuda Y

Meteoritics and Planetary Science 2023.8

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1111/maps.14064

Web of Science

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Formation of Amino Acids and Carboxylic Acids in Weakly Reducing Planetary Atmospheres by Solar Energetic Particles from the Young Sun Reviewed

Kensei Kobayashi, Jun-ichi Ise, Ryohei Aoki, Miei Kinoshita, Koki Naito, Takumi Udo, Bhagawati Kunwar, Jun-ichi Takahashi, Hiromi Shibata, Hajime Mita, Hitoshi Fukuda, Yoshiyuki Oguri, Kimitaka Kawamura, Yoko Kebukawa, Vladimir S. Airapetian

Life 13 ( 5 ) 1103 - 1103 2023.4

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Publishing type：Research paper (scientific journal) Publisher：MDPI AG

Life most likely started during the Hadean Eon; however, the environmental conditions which contributed to the complexity of its chemistry are poorly known. A better understanding of various environmental conditions, including global (heliospheric) and local (atmospheric, surface, and oceanic), along with the internal dynamic conditions of the early Earth, are required to understand the onset of abiogenesis. Herein, we examine the contributions of galactic cosmic rays (GCRs) and solar energetic particles (SEPs) associated with superflares from the young Sun to the formation of amino acids and carboxylic acids in weakly reduced gas mixtures representing the early Earth’s atmosphere. We also compare the products with those introduced by lightning events and solar ultraviolet light (UV). In a series of laboratory experiments, we detected and characterized the formation of amino acids and carboxylic acids via proton irradiation of a mixture of carbon dioxide, methane, nitrogen, and water in various mixing ratios. These experiments show the detection of amino acids after acid hydrolysis when 0.5% (v/v) of initial methane was introduced to the gas mixture. In the set of experiments with spark discharges (simulation of lightning flashes) performed for the same gas mixture, we found that at least 15% methane was required to detect the formation of amino acids, and no amino acids were detected in experiments via UV irradiation, even when 50% methane was used. Carboxylic acids were formed in non-reducing gas mixtures (0% methane) by proton irradiation and spark discharges. Hence, we suggest that GCRs and SEP events from the young Sun represent the most effective energy sources for the prebiotic formation of biologically important organic compounds from weakly reducing atmospheres. Since the energy flux of space weather, which generated frequent SEPs from the young Sun in the first 600 million years after the birth of the solar system, was expected to be much greater than that of GCRs, we conclude that SEP-driven energetic protons are the most promising energy sources for the prebiotic production of bioorganic compounds in the atmosphere of the Hadean Earth.

DOI： 10.3390/life13051103

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Chemical composition of carbonaceous asteroid Ryugu from synchrotron spectroscopy in the mid- to far-infrared of Hayabusa2-returned samples Reviewed International coauthorship International journal

Emmanuel Dartois, Yoko Kebukawa, Hikaru Yabuta, Jérémie Mathurin, Cécile Engrand, Jean Duprat, Laure Bejach, Alexandre Dazzi, Ariane Deniset-Besseau, Lydie BONAL, Eric Quirico, Christophe Sandt, Ferenc Borondics, Jens Barosch, George D. Cody, Bradley De Gregorio, MINAKO HASHIGUCHI, David A. L. Kilcoyne, Mutsumi Komatsu, Zita Martins, Megumi Matsumoto, Gilles Montagnac, Smail Mostefaoui, Larry R. Nittler, Takuji Ohigashi, Taiga Okumura, Laurent Remusat, Scott Sandford, Miho Shigenaka, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier-Paoletti, Shohei Yamashita, Tomoki Nakamura, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Takaaki Noguchi, Hiroshi Naraoka, Ryuji Okazaki, Kanako Sakamoto, Hisayoshi Yurimoto, Masanao Abe, Kanami Kamide, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa

Astronomy & Astrophysics 671 2023.2

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1051/0004-6361/202244702

Web of Science

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Macromolecular organic matter in samples of the asteroid (162173) Ryugu Reviewed International coauthorship International journal

Hikaru Yabuta, George D. Cody, Cécile Engrand, Yoko Kebukawa, Bradley De Gregorio, Lydie Bonal, Laurent Remusat, Rhonda Stroud, Eric Quirico, Larry Nittler, Minako Hashiguchi, Mutsumi Komatsu, Taiga Okumura, Jérémie Mathurin, Emmanuel Dartois, Jean Duprat, Yoshio Takahashi, Yasuo Takeichi, David Kilcoyne, Shohei Yamashita, Alexandre Dazzi, Ariane Deniset-Besseau, Scott Sandford, Zita Martins, Yusuke Tamenori, Takuji Ohigashi, Hiroki Suga, Daisuke Wakabayashi, Maximilien Verdier-Paoletti, Smail Mostefaoui, Gilles Montagnac, Jens Barosch, Kanami Kamide, Miho Shigenaka, Laure Bejach, Megumi Matsumoto, Yuma Enokido, Takaaki Noguchi, Hisayoshi Yurimoto, Tomoki Nakamura, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Harold C. Connolly, Dante S. Lauretta, Masanao Abe, Tatsuaki Okada, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Aiko Nakato, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Kentaro Hatakeda, Akiko Miyazaki, Hiromichi Soejima, Yuya Hitomi, Kazuya Kumagai, Tomohiro Usui, Tasuku Hayashi, Daiki Yamamoto, Ryota Fukai, Seiji Sugita, Kohei Kitazato, Naru Hirata, Rie Honda, Tomokatsu Morota, Eri Tatsumi, Naoya Sakatani, Noriyuki Namiki, Koji Matsumoto, Rina Noguchi, Koji Wada, Hiroki Senshu, Kazunori Ogawa, Yasuhiro Yokota, Yoshiaki Ishihara, Yuri Shimaki, Manabu Yamada, Chikatoshi Honda, Tatsuhiro Michikami, Moe Matsuoka, Naoyuki Hirata, Masahiko Arakawa, Chisato Okamoto, Masateru Ishiguro, Ralf Jaumann, Jean-Pierre Bibring, Matthias Grott, Stefan Schröder, Katharina Otto, Cedric Pilorget, Nicole Schmitz, Jens Biele, Tra-Mi Ho, Aurélie Moussi-Soffys, Akira Miura, Hirotomo Noda, Tetsuya Yamada, Keisuke Yoshihara, Kosuke Kawahara, Hitoshi Ikeda, Yukio Yamamoto, Kei Shirai, Shota Kikuchi, Naoko Ogawa, Hiroshi Takeuchi, Go Ono, Yuya Mimasu, Kent Yoshikawa, Yuto Takei, Atsushi Fujii, Yu-ichi Iijima, Satoru Nakazawa, Satoshi Hosoda, Takahiro Iwata, Masahiko Hayakawa, Hirotaka Sawada, Hajime Yano, Ryudo Tsukizaki, Masanobu Ozaki, Fuyuto Terui, Satoshi Tanaka, Masaki Fujimoto, Makoto Yoshikawa, Takanao Saiki, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda

Science 379 ( 6634 ) 2023.2

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Language：English Publishing type：Research paper (scientific journal) Publisher：American Association for the Advancement of Science (AAAS)

Samples of the carbonaceous asteroid (162173) Ryugu were collected and brought to Earth by the Hayabusa2 spacecraft. We investigated the macromolecular organic matter in Ryugu samples and found that it contains aromatic and aliphatic carbon, ketone, and carboxyl functional groups. The spectroscopic features of the organic matter are consistent with those in chemically primitive carbonaceous chondrite meteorites that experienced parent-body aqueous alteration (reactions with liquid water). The morphology of the organic carbon includes nanoglobules and diffuse carbon associated with phyllosilicate and carbonate minerals. Deuterium and/or nitrogen-15 enrichments indicate that the organic matter formed in a cold molecular cloud or the presolar nebula. The diversity of the organic matter indicates variable levels of aqueous alteration on Ryugu’s parent body.

DOI： 10.1126/science.abn9057

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Experimental synthesis of Fe-bearing olivine at near-solidus temperatures and its decomposition during longtime heating

Naoki HIRAKAWA, Yoko KEBUKAWA, Takazo SHIBUYA, Hisahiro UEDA, Kensei KOBAYASHI

Journal of Mineralogical and Petrological Sciences 118 ( 1 ) n/a - n/a 2023

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Publishing type：Research paper (scientific journal) Publisher：Japan Association of Mineralogical Sciences

DOI： 10.2465/jmps.220913

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Gamma-Ray-Induced Amino Acid Formation in Aqueous Small Bodies in the Early Solar System Reviewed International journal

Kebukawa Yoko, Asano Shinya, Tani Atsushi, Yoda Isao, Kobayashi Kensei

ACS CENTRAL SCIENCE 2022.12

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acscentsci.2c00588

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Heterogeneous nature of the carbonaceous chondrite breccia Aguas Zarcas – Cosmochemical characterization and origin of new carbonaceous chondrite lithologies Reviewed

Imene Kerraouch, Yoko Kebukawa, Addi Bischoff, Michael E. Zolensky, Elias Wölfer, Jan L. Hellmann, Motoo Ito, Ashley King, Mario Trieloff, Jean-Alix Barrat, Phillipe Schmitt-Kopplin, Andreas Pack, Markus Patzek, Romy D. Hanna, Thomas Fockenberg, Yves Marrocchi, Marc Fries, Jérémie Mathurin, Emmanuel Dartois, Jean Duprat, Cécile Engrand, Ariane Deniset, Alexandre Dazzi, Kento Kiryu, Motoko Igisu, Takazo Shibuya, Daisuke Wakabayashi, Shohei Yamashita, Yasuo Takeichi, Yoshio Takahashi, Takuji Ohigashi, Yu Kodama, Masashi Kondo

Geochimica et Cosmochimica Acta 334 155 - 186 2022.10

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Publishing type：Research paper (scientific journal) Publisher：Elsevier BV

DOI： 10.1016/j.gca.2022.07.010

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Compositional and spectroscopic investigation of three ungrouped carbonaceous chondrites Reviewed International coauthorship International journal

Yesiltas Mehme, Kebukawa Yoko, Glotch Timothy D, Zolensky Michael, Fries Marc, Aysal Namik, Tukel Fatma S

METEORITICS & PLANETARY SCIENCE 57 ( 9 ) 1665 - 1687 2022.9

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

DOI： 10.1111/maps.13893

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Biomarkers in the Atacama Desert along the moisture gradient and the depth in the hyperarid zone: Phosphatase activity as trace of microbial activity Reviewed International coauthorship International journal

Kensei Kobayashi, Philippe Nauny, Yoshinori Takano, Chiho Honma, Taihei Kurizuka, Yuto Ishikawa, Shusuke Yogosawa, Yumiko Obayashi, Takeo Kaneko, Yoko Kebukawa, Hajime Mita, Mari Ogawa, Keigo Enya, Yoshitaka Yoshimura, Christopher P. McKay

International Journal of Astrobiology 21 ( 5 ) 329 - 351 2022.8

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Language：English Publishing type：Research paper (scientific journal) Publisher：Cambridge University Press (CUP)

Abstract

Microbiological activities can be detected in various extreme environments on Earth, which suggest that extraterrestrial environments, such as on Mars, could host life. There have been proposed a number of biomarkers to detect extant life mostly based on specific molecules. Because terrestrial organisms have catalytic proteins (enzymes), enzymatic activity may also be a good indicator to evaluate biological activities in extreme environments. Phosphatases are essential for all terrestrial organisms because phosphate esters are ubiquitously used in genetic molecules (DNA/RNA) and membranes. In this study, we evaluated microbial activity in soils of the Atacama Desert, Chile, by analysing several biomarkers, including phosphatase activity. Phosphatases extracted with Tris buffer were assayed fluorometrically using 4-methylumbelliferyl phosphate as a substrate. The horizontal distribution of phosphatase activity and other parameters in soils from the Atacama Desert showed that phosphatase activity was positively correlated with amino acid concentration and colony-forming units and negatively correlated with precipitation amount. We found consistent that biochemical indicators including phosphatase significantly decreased in the extreme hyper-arid zone where rainfall of <25 mm year⁻¹. The results were compared with phosphatase activities detected in extreme environments, such as submarine hydrothermal systems and Antarctic soils, as well as soils from ordinary environments. Overall, our results suggested that phosphatase activity could be a good indicator for evaluating biological activities in extreme environments.

DOI： 10.1017/S1473550422000325

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Presolar Stardust in Asteroid Ryugu Reviewed

Jens Barosch, Larry R. Nittler, Jianhua Wang, Conel M. O’D. Alexander, Bradley T. De Gregorio, Cécile Engrand, Yoko Kebukawa, Kazuhide Nagashima, Rhonda M. Stroud, Hikaru Yabuta, Yoshinari Abe, Jérôme Aléon, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Laure Bejach, Martin Bizzarro, Lydie Bonal, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, George D. Cody, Emmanuel Dartois, Nicolas Dauphas, Andrew M. Davis, Alexandre Dazzi, Ariane Deniset-Besseau, Tommaso Di Rocco, Jean Duprat, Wataru Fujiya, Ryota Fukai, Ikshu Gautam, Makiko K. Haba, Minako Hashiguchi, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor R. Ireland, Akira Ishikawa, Motoo Ito, Shoichi Itoh, Kanami Kamide, Noriyuki Kawasaki, A. L. David Kilcoyne, Noriko T. Kita, Kouki Kitajima, Thorsten Kleine, Shintaro Komatani, Mutsumi Komatsu, Alexander N. Krot, Ming-Chang Liu, Zita Martins, Yuki Masuda, Jérémie Mathurin, Kevin D. McKeegan, Gilles Montagnac, Mayu Morita, Smail Mostefaoui, Kazuko Motomura, Frédéric Moynier, Izumi Nakai, Ann N. Nguyen, Takuji Ohigashi, Taiga Okumura, Morihiko Onose, Andreas Pack, Changkun Park, Laurette Piani, Liping Qin, Eric Quirico, Laurent Remusat, Sara S. Russell, Naoya Sakamoto, Scott A. Sandford, Maria Schönbächler, Miho Shigenaka, Hiroki Suga, Lauren Tafla, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Haolan Tang, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Maximilien Verdier-Paoletti, Sohei Wada, Meenakshi Wadhwa, Daisuke Wakabayashi, Richard J. Walker, Katsuyuki Yamashita, Shohei Yamashita, Qing-Zhu Yin, Tetsuya Yokoyama, Shigekazu Yoneda, Edward D. Young, Hiroharu Yui, Ai-Cheng Zhang, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Shogo Tachibana, Hisayoshi Yurimoto

The Astrophysical Journal Letters 935 ( 1 ) L3 - L3 2022.8

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Publishing type：Research paper (scientific journal) Publisher：American Astronomical Society

Abstract

We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection of all major presolar grain types with O- and C-anomalous isotopic compositions typically identified in carbonaceous chondrite meteorites: 1 silicate, 1 oxide, 1 O-anomalous supernova grain of ambiguous phase, 38 SiC, and 16 carbonaceous grains. At least two of the carbonaceous grains are presolar graphites, whereas several grains with moderate C isotopic anomalies are probably organics. The presolar silicate was located in a clast with a less altered lithology than the typical extensively aqueously altered Ryugu matrix. The matrix-normalized presolar grain abundances in Ryugu are ${4.8}_{-2.6}^{+4.7}$ ppm for O-anomalous grains, ${25}_{-5}^{+6}$ ppm for SiC grains, and ${11}_{-3}^{+5}$ ppm for carbonaceous grains. Ryugu is isotopically and petrologically similar to carbonaceous Ivuna-type (CI) chondrites. To compare the in situ presolar grain abundances of Ryugu with CI chondrites, we also mapped Ivuna and Orgueil samples and found a total of 15 SiC grains and 6 carbonaceous grains. No O-anomalous grains were detected. The matrix-normalized presolar grain abundances in the CI chondrites are similar to those in Ryugu: ${23}_{-6}^{+7}$ ppm SiC and ${9.0}_{-3.6}^{+5.4}$ ppm carbonaceous grains. Thus, our results provide further evidence in support of the Ryugu–CI connection. They also reveal intriguing hints of small-scale heterogeneities in the Ryugu samples, such as locally distinct degrees of alteration that allowed the preservation of delicate presolar material.

DOI： 10.3847/2041-8213/ac83bd

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Other Link： https://iopscience.iop.org/article/10.3847/2041-8213/ac83bd/pdf
Origins of Amino Acids in Early Earth: Endogenous vs. Exogenous

Kobayashi Kensei, Kebukawa Yoko, Mita Hajime, Takahashi Jun―ichi, Shibata Hiromi, Udo Takumi, Ishikawa Akari, Imai Naoki, Fukuda Hitoshi, Oguri Yoshiyuki, Sakon Itsuki, Yano Hajime, Yamagishi Akihiko, Airapetian Vladimir

Abstracts of Annual Meeting of the Geochemical Society of Japan 69 9 2022

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Language：Japanese Publisher：GEOCHEMICAL SOCIETY OF JAPAN

It has been controversial whether amino acids were mainly formed from early Earth atmosphere or exogenous amino acids were delivered by meteorites or other extraterrestrial bodies. We experimentally examined possible formation of amino acids from slightly reducing gas mixtures (CO₂, CO, N₂ and H₂O) by proton irradiation simulating the action of solar energetic particles. We also examined the stability of amino acid in cosmic dust environment by space experiments Tanpopo (2015-19) and Tanpopo 2 (2019-20). We compared the amount of amino acids formed in early atmosphere and that delivered by extraterrestrial bodies. We also discussed possible formation of seeds of enantiomeric excesses of amino acids in both terrestrial and extraterrestrial environments.

DOI： 10.14862/geochemproc.69.0_9

CiNii Research

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Space Exposure of Amino Acids and Their Precursors during the Tanpopo Mission Reviewed

Kensei Kobayashi, Hajime Mita, Yoko Kebukawa, Kazumichi Nakagawa, Takeo Kaneko, Yumiko Obayashi, Tomohito Sato, Takuya Yokoo, Saaya Minematsu, Hitoshi Fukuda, Yoshiyuki Oguri, Isao Yoda, Satoshi Yoshida, Kazuhiro Kanda, Eiichi Imai, Hajime Yano, Hirofumi Hashimoto, Shin-ichi Yokobori, Akihiko Yamagishi

Astrobiology 21 ( 12 ) 1479 - 1493 2021.12

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Publishing type：Research paper (scientific journal) Publisher：Mary Ann Liebert Inc

DOI： 10.1089/ast.2021.0027

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Other Link： https://www.liebertpub.com/doi/pdf/10.1089/ast.2021.0027
Evaluation of extant microbial activity by phosphatase activity in terrestrial extreme environments Reviewed

Kobayashi Kensei, Sato Shuji, Ito Yuki, Nakamoto Saki, Kurizuka Taihei, Takano Yoshinori, Obayashi Yumiko, Kaneko Takeo, Kebukawa Yoko, Ogawa Mari, Yoshida Satoshi

Viva Origino 49 ( 2 ) 7 2021.11

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society for the Study of the Origin and Evolution of Life Japan

 We evaluated biological activities in terrestrial extreme environment samples from Antarctica soils and submarine hydrothermal systems by measuring phosphatase activities. The soil of Site 8 (near a penguin rookery) showed almost the same level of phosphatase activities as usual surface soil sampled in Yokohama National University (YNU ) campus, while the soil of the other stations showed much less activities. Massive sulfide chimneys of submarine hydrothermal vents in South Mariana Backarc also showed phosphatase activities: The exterior part of the chimnies showed higher than the interior part, suggesting the prokarotic habitat and cell density. Alkaline phosphatase (ALP) in the extracts from the soil of Antarctica Site 8 and chimney samples was characterized by the laboratory-based enzymatic assessments. Among these profiles, firstly, the Antarctica ALP showed the maximal at 37℃, the chimney ALP showed the maximal at 90℃, while ALP from the YNU soil showed the maximal at 60℃. Secondly, the gel filtration chromatography showed that the ALP activity in both Antarctica and chimney samples was found mainly in the fraction whose molecular weights were around 100000 Dalton. The ALP activity was diminished with EDTA and was recovered with addition of zinc ion. The present results showed that zinc-containing metalloenzymes are present in the Antarctica soils and the chimneys in the hydrothermal system, and that phosphatases are useful bio-signatures for extant life in extreme environments. Phosphatase activity could be used for life detection in extraterrestrial environments, as well as for evaluation of biochemical function of prebiotic samples.

DOI： 10.50968/vivaorigino.49_7

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Comparison of Stepwise and Single-Step Pyrolysis GC/MS for Natural Complex Macromolecular Organic Matter Reviewed

MOGI Yuto, KEBUKAWA Yoko, KOBAYASHI Kensei

Analytical Sciences advpub ( 0 ) 113 - 121 2021.8

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Language：English Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Analytical Chemistry

DOI： 10.2116/analsci.21P188

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Other Link： https://www.jstage.jst.go.jp/article/analsci/advpub/0/advpub_21P188/_pdf
SPECTROSCOPIC INVESTIGATION OF UNGROUPED CARBONACEOUS CHONDRITES. Reviewed International coauthorship International journal

Yesiltas M, Kebukawa Y, Zolensky M, Fries M, Glotch T. D

METEORITICS & PLANETARY SCIENCE 56 2021.8

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Language：English Publishing type：Research paper (scientific journal)

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On the Nature of Organic Dust in Novae Reviewed

Endo Izumi, Sakon Itsuki, Onaka Takashi, Kimura Yuki, Kimura Seiji, Wada Setsuko, Helton L. Andrew, Lau Ryan M, Kebukawa Yoko, Muramatsu Yasuji, Ogawa Nanako O, Ohkouchi Naohiko, Nakamura Masato, Kwok Sun

ASTROPHYSICAL JOURNAL 917 ( 2 ) 103-1 - 103-10 2021.8

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Language：English Publishing type：Research paper (scientific journal) Publisher：American Astronomical Society

DOI： 10.3847/1538-4357/ac0cf1

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Effects of minerals on metamorphism of organic matter during thermal processes in meteorite parent bodies Reviewed

Naoki Hirakawa, Yoko Kebukawa, Kensei Kobayashi, Hideyuki Nakano

Icarus 358 114167-1 - 114167-14 2021.4

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Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier

DOI： 10.1016/j.icarus.2020.114167

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Hydrogen isotopic exchange kinetics between organic matter and water: Implications for chemical evolution during meteorite parent body processing Reviewed

Yoko Kebukawa, Sachio Kobayashi, Noriyuki Kawasaki, Ying Wang, Hisayoshi Yurimoto, George D. Cody

Meteoritics & Planetary Science 56 ( 3 ) 440 - 454 2021.3

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1111/MAPS.13629

Web of Science

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Organic matter and water from asteroid Itokawa Reviewed

Chan Q. H. S, Stephant A, Franchi I. A, Zhao X, Brunetto R, Kebukawa Y, Noguchi T, Johnson D, Price M. C, Harriss K. H, Zolensky M. E, Grady M. M

SCIENTIFIC REPORTS 11 ( 1 ) 5125-1 - 5125-12 2021.3

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Language：English Publishing type：Research paper (scientific journal) Publisher：nature

DOI： 10.1038/s41598-021-84517-x

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The polymict carbonaceous breccia Aguas Zarcas: A potential analog to samples being returned by the OSIRIS-REx and Hayabusa2 missions Reviewed

Kerraouch Imene, Bischoff Addi, Zolensky Michael E, Pack Andreas, Patzek Markus, Hanna Romy D, Fries Marc D, Harries Dennis, Kebukawa Yoko, Le Loan, Ito Motoo, Rahman Zia

METEORITICS & PLANETARY SCIENCE 56 ( 2 ) 277 - 310 2021.2

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

DOI： 10.1111/maps.13620

Scopus

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Aqueous alteration without initial water: possibility of organic-induced hydration of anhydrous silicates in meteorite parent bodies Reviewed

Hirakawa Naoki, Kebukawa Yoko, Furukawa Yoshihiro, Kondo Masashi, Nakano Hideyuki, Kobayashi Kensei

EARTH PLANETS AND SPACE 73 ( 16 ) 2021.1

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Language：English Publishing type：Research paper (scientific journal) Publisher：Springer

<title>Abstract</title>Early evolution of Solar System small bodies proceeded through interactions of mineral and water. Melting of water ice accreted with mineral particles to the parent body results in the formation of secondary minerals, the so-called aqueous alteration. Formation of phyllosilicates from anhydrous silicates is a typical alteration effect recorded in primitive meteorites. In addition to mineral and water, organic matter could have been also a significant component in meteorite parent bodies. However, the role of organic matter in the alteration of silicates is not well understood. We conducted a heating experiment of anhydrous silicate (olivine) with a mixture of organic compounds which simulated primordial organic matter in the Solar System. Dissolution and precipitation features were confirmed on the olivine surface after heating at 300 °C for 10 days, and proto-phyllosilicates were formed in the precipitation area. Magnesite was also detected as concomitant mineral phase. These minerals could be the evidence of aqueous alteration and carbonation of olivine induced by water generated through decomposition of the organic compounds with hydroxy groups. Our result showed that the in situ formation of hydrated silicates through a mineral–organic interaction without the initial presence of water. It further implies that formation of phyllosilicates on the olivine surface in contact with organic matter can occur in meteorite parent bodies which formed inside the H₂O snow line but accreted with organic matter, initially without water. Water formed through decomposition of organic matter could be one candidate for hydrous silicate formation, for example, in ordinary chondrites from S-type asteroids inside the H₂O snow line. Although the origin of water in ordinary chondrites is under debate, water generation from organic matter may also explain the D-rich water in ordinary chondrites because primordial organic matter is known to be D rich.

DOI： 10.1186/s40623-020-01352-6

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Synthesis of Organic Matter in Aqueous Environments Simulating Small Bodies in the Solar System and the Effects of Minerals on Amino Acid Formation Reviewed

Elmasry Walaa, Kebukawa Yoko, Kobayashi Kensei

LIFE-BASEL 11 ( 1 ) 32-1 - 32-20 2021.1

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Language：English Publishing type：Research paper (scientific journal) Publisher：mdpi

DOI： 10.3390/life11010032

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Assessing the debris generated by the small carry-on impactor operated from the Hayabusa2 mission

Motoo Ito, Yoshinori Takano, Yoko Kebukawa, Takuji Ohigashi, Moe Matsuoka, Kento Kiryu, Masayuki Uesugi, Tomoki Nakamura, Hayato Yuzawa, Keita Yamada, Hiroshi Naraoka, Toru Yada, Masanao Abe, Masahiko Hayakawa, Takanao Saiki, Shogo Tachibana

GEOCHEMICAL JOURNAL 55 ( 4 ) 223 - 239 2021

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.2343/geochemj.2.0632

Web of Science

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Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith

Yoko Kebukawa, Michael E. Zolensky, Cyrena A. Goodrich, Motoo Ito, Nanako O. Ogawa, Yoshinori Takano, Naohiko Ohkouchi, Kento Kiryu, Motoko Igisu, Takazo Shibuya, Matthew A. Marcus, Takuji Ohigashi, James Martinez, Yu Kodama, Muawia H. Shaddad, Peter Jenniskens

Meteoritics and Planetary Science 56 ( 7 ) 1311 - 1327 2021

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Publishing type：Research paper (scientific journal)

DOI： 10.1111/maps.13713

Scopus

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A Feasible Study of In-Situ Measurements of Light Isotopes and Organic Molecules with High Resolution Mass Spectrometer MULTUM on the OKEANOS Mission Reviewed

ITO Motoo, YOKOTA Sho-ichiro, TOYODA Michisato, YURIMOTO Hisayoshi, WATANABE Motoki, IKEDA Ryota, KUBO Yuki, GRAND Noel, COTTIN Herve, BUCH Arnaud, SZOPA Cyril, OKADA Tatsuaki, MORI Osamu, KEBUKAWA Yoko, AOKI Jun, KAWAI Yosuke, MATSUMOTO Jun, CHUJO Toshihiro, NAKAMURA Ryosuke, YANO Hajime

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 19 ( 4 ) 477 - 484 2021

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Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人日本航空宇宙学会

The OKEANOS mission utilizing the Solar Power Sail is one of the candidates of the strategic middle-class space exploration to the outer Solar System lead by the JAXA. The mission is planning to be launched in 2030's, and rendezvous for spectral observations and landing for in-situ measurements of light isotopes and organic molecules to a D or P type Jupitar Trojan asteroid in 2040's. The flagship instrument on board is a high-resolution mass spectrometry (HRMS) system together with suits of remote-sensing instruments. Through in-depth scientific observations, the OKEANOS mission will provide critical input to the key questions of (1) constraining planet formation/migration theories, and (2) inventory and distribution of volatiles in the Solar System. We have conducted experimental tests of a sample canister sealing by a metal seal knife-edge, sample canister-MULTUM test, gas chromatograph-MULTUM coupling test for organics, and H and N isotopic measurements in the atmospheric air. Current performances are (1) high mass resolution was 30,000 at m/z = 20, (2) sample canister system with a knife-edge metal seal kept 90 % of a released gas in 1 hour for Cu or Au gaskets with/without regolith, (3) error meets the required precision and accuracy for nitrogen isotopic measurement but for hydrogen. These experiment tests need to continue for our scientific proposes on the asteroids.

DOI： 10.2322/tastj.19.477

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Chemical assessment of the explosive chamber in the projector system of Hayabusa2 for asteroid sampling Reviewed

Yoshinori Takano, Keita Yamada, Chisato Okamoto, Hirotaka Sawada, Ryuji Okazaki, Kanako Sakamoto, Yoko Kebukawa, Kento Kiryu, Takazo Shibuya, Motoko Igisu, Hajime Yano, Shogo Tachibana

Earth, Planets and Space 72 ( 1 ) 2020.12

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

DOI： 10.1186/s40623-020-01217-y

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Effects of sputtering on XPS depth profile analysis of zirconium-based chemical conversion coatings Reviewed

Hideyuki Taguchi, Yusuke Miyazawa, Yoko Kebukawa, Kensei Kobayashi

Bunseki Kagaku 69 ( 10.11 ) 559 - 565 2020.10

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Analytical Chemistry

DOI： 10.2116/bunsekikagaku.69.559

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XPSにおける粉体試料固定法の検討 Reviewed

田口秀之, 宮澤悠介, 癸生川陽子, 小林憲正

分析化学 69 ( 10-11 ) 639 - 645 2020.10

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Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人日本分析化学会

DOI： 10.2116/bunsekikagaku.69.627

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Molecular evolution during hydrothermal reactions from formaldehyde and ammonia simulating aqueous alteration in meteorite parent bodies Reviewed

Yoko Kebukawa, Satoru Nakashima, Hajime Mita, Yasuji Muramatsu, Kensei Kobayashi

Icarus 347 2020.9

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DOI： 10.1016/j.icarus.2020.113827

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An Another Protocol to Make Sulfur Embedded Ultrathin Sections of Extraterrestrial Small Samples Reviewed

Takaaki Noguchi, Minako Takase, Rikako Matsumoto, Yoko Kebukawa, Hiroki Suga, Masashi Kondo, Yoshio Takahashi, Yasuo Takeichi, Hikaru Yabuta

Life 10 ( 8 ) 135 - 135 2020.8

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Publishing type：Research paper (scientific journal) Publisher：MDPI AG

Another protocol to make sulfur embedded ultrathin sections was developed for STXM–XANES, AFM–IR and TEM analyses of organic materials in small extraterrestrial samples. Polymerized liquid sulfur—instead of low-viscosity liquid sulfur—is the embedding media in this protocol. Due to high viscosity of the polymerized sulfur, the embedded samples stay near the surface of polymerized liquid sulfur, which facilitates trimming of glassy sulfur and ultramicrotomy of tiny embedded samples. In addition, well-continued ribbons of ultramicrotomed sections can be obtained, which are suitable for the above mentioned analyses. Because there is no remarkable difference in Carbon XANES spectra of Murchison IOM prepared by this protocol and by the conventional protocol, this protocol gives another alternative to prepare sulfur embedded ultramicrotomed sections.

DOI： 10.3390/life10080135

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Kinetics in thermal evolution of Raman spectra of chondritic organic matter to evaluate thermal history of their parent bodies Reviewed

Kiryu Kento, Kebukawa Yoko, Igisu Motoko, Shibuya Takazo, Zolensky Michael E, Kobayashi Kensei

METEORITICS & PLANETARY SCIENCE 55 ( 8 ) 1848 - 1864 2020.8

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DOI： 10.1111/maps.13548

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Alteration and Stability of Complex Macromolecular Amino Acid Precursors in Hydrothermal Environments Reviewed

Walaa Elmasry, Yoko Kebukawa, Takeo Kaneko, Yumiko Obayashi, Hitoshi Fukuda, Yoshiyuki Oguri, Kensei Kobayashi

Origins of Life and Evolution of Biospheres 2020.4

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Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

DOI： 10.1007/s11084-020-09593-x

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Primordial organic matter in the xenolithic clast in the Zag H chondrite: Possible relation to D/P asteroids Reviewed

Yoko Kebukawa, Michael E. Zolensky, Motoo Ito, Nanako O. Ogawa, Yoshinori Takano, Naohiko Ohkouchi, Aiko Nakato, Hiroki Suga, Yasuo Takeichi, Yoshio Takahashi, Kensei Kobayashi

Geochimica et Cosmochimica Acta 271 61 - 77 2020.2

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DOI： 10.1016/j.gca.2019.12.012

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Quenched Nitrogen-included Carbonaceous Composite (QNCC): A powerful candidate of the carriers of the UIR bands in classical novae

Izumi Endo, Itsuki Sakon, Takashi Onaka, Andrew L. Helton, Ryan M. Lau, Seiji Kimura, Setsuko Wada, Nanako Ogawa, Naohiko Ohkouchi, Yoko Kebukawa

Proceedings of the International Astronomical Union 425 - 426 2020

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Language：English Publishing type：Research paper (scientific journal) Publisher：Cambridge University Press

DOI： 10.1017/S1743921319006409

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Investigation of Powder Sample Fixing Method in XPS Analysis

TAGUCHI Hideyuki, MIYAZAWA Yusuke, KEBUKAWA Yoko, KOBAYASHI Kensei

BUNSEKI KAGAKU 69 ( 10-11 ) 639 - 645 2020

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Analytical Chemistry

XPS (X-ray Photoelectron Spectroscopy) is a surface-sensitive analytical method that is performed in an ultra-high vacuum. Therefore, the samples should be carefully fixed with metal masks, plates, and screws, avoiding contamination. However, since powder samples cannot be fixed by these methods, they are while usually fixed with double-sided tape. The double-sided tape is convenient, but it has a weak point, that carbon from the tape is detected due to limited amounts of samples. Therefore, various fixing methods for powder samples have been examined, including JIS standard methods in this paper. It was found that the Al pan pressing method was the most stable and convenient fixing method for powder samples.

DOI： 10.2116/bunsekikagaku.69.639

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EFFECTS OF MINERALS FOR EVOLUTION OF ORGANIC MATTER IN THE SOLAR SYSTEM

Kebukawa Yoko

Viva Origino 48 ( 3 ) 5 2020

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society for the Study of the Origin and Evolution of Life Japan

Extraterrestrial organic matter provided by meteorites and interplanetary dust particles could have been contributed to the origin of life on the Earth. As a part of chemical evolution toward life, it is important to understand origin and evolution of organic matter in the Solar System and beyond. Formation and evolution of organic matter in the Solar System have been studied over decades. Although organic matter usually exists with minerals as in meteorites, effects of minerals for the processes of extraterrestrial organic matter are not well understood. Here I review the relationships between organic matter and minerals observed in meteorites, experimental studies of interactions of organic matter with minerals, and mechanisms of effects of minerals for organic reactions.

DOI： 10.50968/vivaorigino.48_5

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A novel organic-rich meteoritic clast from the outer solar system Reviewed

Yoko Kebukawa, Motoo Ito, Michael E. Zolensky, Richard C. Greenwood, Zia Rahman, Hiroki Suga, Aiko Nakato, Queenie H.S. Chan, Marc Fries, Yasuo Takeichi, Yoshio Takahashi, Kazuhiko Mase, Kensei Kobayashi

Scientific Reports 9 ( 1 ) 3169 2019.12

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DOI： 10.1038/s41598-019-39357-1

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ISOTOPIC MEASUREMENTS OF < 100 ng CARBON AND NITROGEN THROUGH EA/IRMS AND ITS APPLICATION TO EXTRATERRESTRIAL MATERIALS. Reviewed

Ogawa N. O, Kebukawa Y, Zolensky M, Takano Y, Ohkouchi N

METEORITICS & PLANETARY SCIENCE 54 2019.8

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Comparison of FT‐IR spectra of bulk and acid insoluble organic matter in chondritic meteorites: An implication for missing carbon during demineralization Reviewed

Yoko Kebukawa, Conel M, O'D. Alexander, George D. Cody

Meteoritics & Planetary Science Vol.54 ( 7 ) 1632 - 1641 2019.5

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

DOI： 10.1111/maps.13302

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Further characterization of carbonaceous materials in Hayabusa-returned samples to understand their origin Reviewed

Masayuki Uesugi, Motoo Ito, Hikaru Yabuta, Hiroshi Naraoka, Fumio Kitajima, Yoshinori Takano, Hajime Mita, Yoko Kebukawa, Aiko Nakato, Yuzuru Karouji

Meteoritics and Planetary Science 54 ( 3 ) 638 - 666 2019.3

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DOI： 10.1111/maps.13236

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Bulk chemical characteristics of soluble polar organic molecules formed through condensation of formaldehyde: Comparison with soluble organic molecules in Murchison meteorite Reviewed

Yuki Isono, Shogo Tachibana, Hiroshi Naraoka, François-Régis Orthous-Daunay, Laurette Piani, Yoko Kebukawa

Geochemical Journal 53 ( 1 ) 41 - 51 2019.2

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DOI： 10.2343/geochemj.2.0551

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Nucleic acid bases in Titan tholins and possible genetic systems in the Titan liquidosphere Reviewed

Jun Kawai, Yoko Kebukawa, Christopher, P. McKay, Kensei Kobayashi

Life Sciences in Space Research 20 20 - 29 2019.2

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.lssr.2018.11.002

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Nanoscale infrared imaging analysis of carbonaceous chondrites to understand organic-mineral interactions during aqueous alteration Reviewed

Yoko Kebukawa, Hanae Kobayashi, Norio Urayama, Naoki Baden, Masashi Kondo, Michael E. Zolensky, Kensei Kobayashi

Proceedings of the National Academy of Sciences 116 ( 3 ) 753 - 758 2019.1

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Language：English Publishing type：Research paper (scientific journal) Publisher：NATL ACAD SCIENCES

DOI： 10.1073/pnas.1816265116

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Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics Reviewed

Queenie H.S. Chan, Aiko Nakato, Yoko Kebukawa, Michael E. Zolensky, Tomoki Nakamura, Jessica A. Maisano, Matthew W. Colbert, James E. Martinez, A. L.David Kilcoyne, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Kazuhiko Mase, Ian P. Wright

Meteoritics and Planetary Science 54 ( 1 ) 104 - 125 2019.1

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

DOI： 10.1111/maps.13193

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Nitrogen-included Carbonaceous Compounds (NCC): Laboratory-synthesized organics as the probable candidate for the carrier of the UIR bands observed in dusty classical novae

Izumi Endo, Itsuki Sakon, Takashi Onaka, Andrew L. Helton, Ryan M. Lau, Seiji Kimura, Setsuko Wada, Nanako Ogawa, Naohiko Ohkouchi, Yoko Kebukawa, Bruce G. Elmegreen, L. Viktor Tóth, Manuel Güdel

Proceedings of the International Astronomical Union 343 - 344 2019

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Language：English Publishing type：Research paper (scientific journal) Publisher：Cambridge University Press

DOI： 10.1017/S1743921319001947

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Microscopic Approaches Using STXM and TEM for Coevolution of Organic Matter and Minerals in the Carbonaceous Chondrites' Parent Bodies

Kiryu Kento, Kebukawa Yoko, Takahashi Yoshio, Takeichi Yasuo, Wakabayashi Daisuke, Ohigashi Takuji, Kondo Masashi, Ito Motoo, Kodama Yu, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 66 162 2019

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Language：Japanese Publisher：GEOCHEMICAL SOCIETY OF JAPAN

DOI： 10.14862/geochemproc.66.0_162

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STXM-XANES analyses of Murchison meteorite samples captured by aerogel after hypervelocity impacts: A potential implication of organic matter degradation for micrometeoroid collection experiments Reviewed

Yoko Kebukawa, Kyoko Okudaira, Hikaru Yabuta, Sunao Hasegawa, Makoto Tabata, Yoshihiro Furukawa, Motoo Ito, Aiko Nakato, A. L. David Kilcoyne, Kensei Kobayashi, Shin Ichi Yokobori, Eiichi Imai, Yuko Kawaguchi, Hajime Yano, Akihiko Yamagishi

Geochemical Journal 53 ( 1 ) 53 - 67 2019

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DOI： 10.2343/geochemj.2.0549

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Geochemistry and the origin of life: From extraterrestrial processes, chemical evolution on earth, fossilized life’s records, to natures of the extant life Reviewed

Satoru Nakashima, Yoko Kebukawa, Norio Kitadai, Motoko Igisu, Natsuki Matsuoka

Life 8 ( 4 ) 39 2018.12

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Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for the Promotion of Science London

DOI： 10.3390/life8040039

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Science exploration and instrumentation of the OKEANOS mission to a Jupiter Trojan asteroid using the solar power sail Reviewed

Tatsuaki Okada, Yoko Kebukawa, Jun Aoki, Jun Matsumoto, Hajime Yano, Takahiro Iwata, Osamu Mori, Jean Pierre Bibring, Stephan Ulamec, Ralf Jaumann

Planetary and Space Science 161 99 - 106 2018.10

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Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER

DOI： 10.1016/j.pss.2018.06.020

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微惑星の水環境における多様な有機物の生成

癸生川陽子

Viva Origino, 46: 6 (2018) 2018.6

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LDM (Life Detection Microscope): In Situ Imaging of Living Cells on Surface of Mars Reviewed

A. Yamagishi, T. Satoh, A. Miyakawa, Y. Yoshimura, S. Sasaki, K. Kobayashi, Y. Kebukawa, H. Yabuta, H. Mita, E. Imai

Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan 16 ( 3 ) 299 - 305 2018.5

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Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for Aeronautical and Space Sciences

DOI： 10.2322/tastj.16.299

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Organic matter in extraterrestrial water-bearing salt crystals Reviewed

Queenie H.S. Chan, Michael E. Zolensky, Yoko Kebukawa, Marc Fries, Motoo Ito, Andrew Steele, Zia Rahman, Aiko Nakato, A. L. David Kilcoyne, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Kazuhiko Mase

Science Advances 4 ( 1 ) eaao3521 2018.1

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Language：English Publishing type：Research paper (scientific journal) Publisher：AMER ASSOC ADVANCEMENT SCIENCE

DOI： 10.1126/sciadv.aao3521

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Development of Life Detection Microscope (LDM) for life search on Mars Reviewed

Yoshimura Y, Naganuma T, Mita H, Fujita K, Usui T, Yamagishi A, Satoh T, Miyakawa A, Imai E, Sasaki S, Kobayashi K, Kebukawa Y, Yabuta H

Planetary People - The Japanese Society for Planetary Sciences 27 ( 3 ) 147 - 151 2018

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society for Planetary Sciences

DOI： 10.14909/yuseijin.27.3_147

J-GLOBAL

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Development of Life Detection Microscope (LDM) for life search on Mars Reviewed

Yoshimura Yoshitaka, YAMAGISHI Akihiko, SATO Takehiko, MIYAGAWA Atsuo, IMAI Eiichi, SASAKI Satoshi, KOBAYASHI Kensei, KEBUKAWA Yoko, YABUTA Hikaru, NAGANUMA Takeshi, MITA Hajime, FUJITA Kazuo, USUI Yasuhiro

Planetary people 27 ( 3 ) 147 - 151 2018

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society for Planetary Sciences

J-GLOBAL

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HOW WE CAN FIND ALIENS IN THE UNIVERSE? Reviewed

Jun Kawai, Yoko Kebukawa, Kensei Kobayashi

Viva Origino 46 ( 1 ) 2018

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たんぽぽ計画における宇宙塵捕獲と有機物曝露

三田肇, 癸生川陽子

生物工学, 96 (12) 96 ( 12 ) 688 - 692 2018

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How unique is organic matter in Bells meteorite? - Soft X-ray microscopic analyses

Kebukawa Yoko, Uchimura Erika, Takeichi Yasuo, Suga Hiroki, Ohigashi Takiji, Ito Motoo, Kondo Masashi, Takahashi Yoshio, E. Zolensky Michael, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 65 247 2018

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Language：Japanese Publisher：GEOCHEMICAL SOCIETY OF JAPAN

DOI： 10.14862/geochemproc.65.0_247

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Simulating Experiments of Thermal Metamorphism of Interstellar Organic Materials in Meteorites' Parent Bodies -To Understand the Interaction with Minerals-

Hirakawa Naoki, Kebukawa Yoko, Kobayashi Kensei, Nakano Hideyuki

Abstracts of Annual Meeting of the Geochemical Society of Japan 65 ( 0 ) 2018

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DOI： 10.14862/geochemproc.65.0_140

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Stability of Amino Acid Precursors Simulated Extraterrestrial Environments

Sato Tomohito, kanda kazhuhiro, Kobayashi Kensei, Kebukawa Yoko, Kuramoto Soshi, Yoshida Satoshi, Fukuda Hitoshi, Oguri Yoshiyuki, Mita Hazhime, Nakagawa kazhumichi

Abstracts of Annual Meeting of the Geochemical Society of Japan 65 ( 0 ) 2018

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DOI： 10.14862/geochemproc.65.0_73

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Formation of Amino Acid Precursors and Caboxylic Acid in Slightly Reducing Primitive Atmospheres by Cosmic rays and Solar Energetic Particles

Kobayashi Kensei, Kawamura Kimitaka, Kunwar Bhagawati, Airapetian Vladimir, Kinoshita Miei, Aoki Ryohei, Ise Jun―ichi, Kebukawa Yoko, Shibata Hiromi, Takahashi Jun―ichi, Fukuda Hitoshi, Yoshiyuki Oguri

Abstracts of Annual Meeting of the Geochemical Society of Japan 65 ( 0 ) 2018

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：GEOCHEMICAL SOCIETY OF JAPAN

In order to examine possible formation of organics in slightly reducing primitive atmospheres, mixtures of N2,CH4,CO2 and H2O were irradiated with high-energy protons or UV light, or were subjected to spark discharges, and amino acids and carboxylic acids in the products were determined. While UV and spark discharges did not yielded amino acids if the molar ratio of CH4 was less than 10%, amino acid precursors gave amino acids even if it was as low as 0.5%. Carboxylic acids were formed by spark discharges or proton irradiation even when no methane was added. It has been reported that young solar-type stars occur superflares. It was suggested that major energy sources for production of amino acids in the primitive Earth atmosphere was extraterrestrial high-energy particles such as galactic cosmic rays and/or solar energetic particles.

DOI： 10.14862/geochemproc.65.0_8

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Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond Reviewed

Herve Cottin, Julia Michelle Kotler, Daniela Billi, Charles Cockell, Rene Demets, Pascale Ehrenfreund, Andreas Elsaesser, Louis d'Hendecourt, Jack J. W. A. van Loon, Zita Martins, Silvano Onofri, Richard C. Quinn, Elke Rabbow, Petra Rettberg, Antonio J. Ricco, Klaus Slenzka, Rosa de la Torre, Jean-Pierre de Vera, Frances Westall, Nathalie Carrasco, Aurelien Fresneau, Yuko Kawaguchi, Yoko Kebukawa, Dara Nguyen, Olivier Poch, Kafila Saiagh, Fabien Stalport, Akihiko Yamagishi, Hajime Yano, Benjamin A. Klamm

SPACE SCIENCE REVIEWS 209 ( 1-4 ) 83 - 181 2017.7

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DOI： 10.1007/s11214-017-0365-5

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The search for and analysis of direct samples of early Solar System aqueous fluids. Reviewed International journal

Michael E Zolensky, Robert J Bodnar, Hisayoshi Yurimoto, Shoichi Itoh, Marc Fries, Andrew Steele, Queenie H-S Chan, Akira Tsuchiyama, Yoko Kebukawa, Motoo Ito

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 375 ( 2094 ) 20150386 2017.5

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Language：English Publishing type：Research paper (scientific journal) Publisher：ROYAL SOC

We describe the current state of the search for direct, surviving samples of early, inner Solar System fluids-fluid inclusions in meteorites. Meteoritic aqueous fluid inclusions are not rare, but they are very tiny and their characterization is at the state of the art for most analytical techniques. Meteoritic fluid inclusions offer us a unique opportunity to study early Solar System brines in the laboratory. Inclusion-by-inclusion analyses of the trapped fluids in carefully selected samples will, in the immediate future, provide us detailed information on the evolution of fluids as they interacted with anhydrous solid materials. Thus, real data can replace calculated fluid compositions in thermochemical calculations of the evolution of water and aqueous reactions in comets, asteroids, moons and the terrestrial planets.This article is part of the themed issue 'The origin, history and role of water in the evolution of the inner Solar System'.

DOI： 10.1098/rsta.2015.0386

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Multiple imaging approaches for origin and evolution of organic matter in meteorites (2015 J S P S Outstanding Young Scientist Award) Invited Reviewed

Yoko Kebukawa

Planetary People 26 ( 1 ) 4 - 14 2017.3

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CiNii Books

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One-pot synthesis of amino acid precursors with insoluble organic matter in planetesimals with aqueous activity Reviewed

Yoko Kebukawa, Queenie H. S. Chan, Shogo Tachibana, Kensei Kobayashi, Michael E. Zolensky

SCIENCE ADVANCES 3 ( 3 ) e1602093 2017.3

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DOI： 10.1126/sciadv.1602093

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Advances in analyses of extraterrestrial organic matter Invited

Yoko Kebukawa

Bunseki 1 ( 1 ) 19 - 27 2017.1

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Characterization of carbonaceous matter in xenolithic clasts from the Sharps (H3.4) meteorite: Constraints on the origin and thermal processing Reviewed

Yoko Kebukawa, Michael E. Zolensky, Queenie H. S. Chan, Keisuke Nagao, A. L. David Kilcoyne, Robert J. Bodnar, Charles Farley, Zia Rahman, Loan Le, George D. Cody

GEOCHIMICA ET COSMOCHIMICA ACTA 196 ( 1 ) 74 - 101 2017.1

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DOI： 10.1016/j.gca.2016.09.024

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Amino acid formation from simulated mildly-reducing primitive Earth atmospheres by various energy sources

Aoki Ryohei, Ise Jun―ichi, Kinoshita Miei, Fukuda Hitoshi, Oguri Yoshiyuki, Shibata Hiromi, Kebukawa Yoko, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 64 298 - 298 2017

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Language：Japanese Publisher：GEOCHEMICAL SOCIETY OF JAPAN

It has been reported that amino acids can be formed easily from strongly-reducing atmosphere by various energy sources such as spark discharges since 1950s. Primitive Earth atmosphere is, however, assumed to have been only mildly-reducing. We examined possible formation of amino acids from a mixture of CO₂, CH₄, N₂ and H₂O of various mixing ratios by spark discharges, proton irradiation, or UV irradiation. If partial pressure of CH₄ was 10% or less, amino acids were not formed by spark discharges, but amino acids could be formed by proton irradiation even if the partial pressure of CH₄ was as low as 0.5%. It was difficult to form amino acids from mildly-reducing gas atmospheres by solar UV only, but the solar UV flux was much larger than other possible energy sources on the primitive Earth. We are planning to examine possible formation of amino acids by synergy of solar UV and other energy sources like cosmic rays.

DOI： 10.14862/geochemproc.64.0_298

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Kinetic approaches for origin and evolution of organic matter in meteorites Invited Reviewed

Yoko Kebukawa

Chikyukagaku (Geochemistry) 50 ( 3 ) 211 - 225 2016.9

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Geochemical Society of japan

I have been studying origin and evolution of extraterrestrial organic matter on the basis of experimental kinetic approaches that enable us to predict changes in its molecular structure and chemistry during parent body processes. Here I summarize experimental studies of organic solid formations starting from formaldehyde and ammonia with the presence of liquid water, and decreasing in aliphatic C–H bonds as observed in infrared spectra with heating experiments of Murchison meteorite. The related works are also reviewed and the applications for deciphering thermal histories of asteroids are discussed.

DOI： 10.14934/chikyukagaku.50.211

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Jovian Trojan Asteroid Exploration by Solar Power Sail-craft Reviewed

Osamu MORI, Takanao SAIKI, Hideki KATO, Yuichi TSUDA, Yuya MIMASU, Yoji SHIRASAWA, Ralf BODEN, Jun MATSUMOTO, Toshihiro CHUJO, Shota KIKUCHI, Junji KIKUCHI, Yusuke OKI, Kosuke AKATSUKA, Takahiro IWATA, Tatsuaki OKADA, Hajime YANO, Shuji MATSUURA, Ryosuke NAKAMURA, Yoko KEBUKAWA, Jun AOKI, Junichiro KAWAGUCHI

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 14 ( ists30 ) Pk_1 - Pk_7 2016.7

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Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for Aeronautical and Space Sciences

DOI： 10.2322/tastj.14.pk_1

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Puzzles of meteorite parent body organic chemistry Reviewed

Yoko Kebukawa

Chikyukagaku (Geochemistry) 50 ( 2 ) 67 - 76 2016.6

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Geochemical Society of japan

DOI： 10.14934/chikyukagaku.50.67

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Associations of organic matter with minerals in Tagish Lake meteorite via high spatial resolution synchrotron-based FTIR microspectroscopy Reviewed

Mehmet Yesiltas, Yoko Kebukawa

Meteoritics & Planetary Science 51 ( 3 ) 584 - 595 2016.3

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

Tagish Lake隕石の放射光顕微FTIRによる高空間分解能イメージング分析を行った。有機物とフィロケイ酸塩鉱物の相関が顕著にみられた。また，有機物と炭酸塩鉱物については相関がみられるものとみられないものがあった。

DOI： 10.1111/maps.12609

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Associations of organic matter with minerals in Tagish Lake meteorite via high spatial resolution synchrotron-based FTIR microspectroscopy Reviewed

Mehmet Yesiltas, Yoko Kebukawa

METEORITICS & PLANETARY SCIENCE 51 ( 3 ) 584 - 595 2016.3

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DOI： 10.1111/maps.12609

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Synthesis of complicated organic matters in Titan's atmosphere and its signification for astrobiology Reviewed

Jun Kawai, Yoko Kebukawa, Kensei Kobayashi

Viva Origino 43 ( 1 ) 1 - 10 2015.6

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society for the Study of the Origin and Evolution of Life Japan

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A kinetic study of the formation of organic solids from formaldehyde: Implications for the origin of extraterrestrial organic solids in primitive Solar System objects Reviewed

Yoko Kebukawa, George D. Cody

ICARUS 248 412 - 423 2015.3

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DOI： 10.1016/j.icarus.2014.11.005

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Abiotic Organic Synthesis Experiment in Space "Astrobiology Japan 2": Report of Astrobiology Experiments in Earth Orbit WG

K. Kobayashi, Y. Kebukawa, T. Kaneko, H. Mita, Y. Bessho, K. Nakagawa, H. Shibata, E. Imai, J. Takanashi, Y. Ishibashi, K. Okudaira, H. Yano, H. Hashimoto, S. Yokobori, A. Yamagishi

Space Util. Res. 29 in press 2015

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Sequential analysis of carbonaceous materials in Hayabusa-returned samples for the determination of their origin Science of solar system materials examined from Hayabusa and future missions Reviewed

Masayuki Uesugi, Hiroshi Naraoka, Motoo Ito, Hikaru Yabuta, Fumio Kitajima, Yoshinori Takano, Hajime Mita, Ichiro Ohnishi, Yoko Kebukawa, Toru Yada, Yuzuru Karouji, Yukihiro Ishibashi, Takaaki Okada, Masanao Abe

Earth, Planets and Space 66 ( 1 ) 2014.12

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DOI： 10.1186/1880-5981-66-102

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Infrared imaging spectroscopy with micron resolution of Sutter's Mill meteorite grains Reviewed

Mehmet Yesiltas, Yoko Kebukawa, Robert E. Peale, Eric Mattson, Carol J. Hirschmugl, Peter Jenniskens

Meteoritics & Planetary Science 49 ( 11 ) 2027–2037 2014.11

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Sutter's Mill隕石のSM2，SM12試料について，Raman分光及び放射光源を用いた高空間分解能FTIR分析を行った。SM12はSM2よりも加熱を受けていることが分かった。FTIRイメージングにより，有機物と炭酸塩鉱物の分布に相関がみられることが分かった。SM2とSM12では有機物とフィロケイ酸塩の分布関係が異なっており，この結果は，これら2つの試料が異なる起源であったが，最終的にSutter's Mill隕石母天体に集積したという説を支持するものである。

DOI： 10.1111/maps.12321

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Mineralogy and petrography of C asteroid regolith: The Sutter's Mill CM meteorite Reviewed

Michael Zolensky, Takashi Mikouchi, Marc Fries, Robert Bodnar, Peter Jenniskens, Qing-Zhu Yin, Kenji Hagiya, Kazumasa Ohsumi, Mutsumi Komatsu, Matthew Colbert, Romy Hanna, Jessie Maisano, Richard Ketcham, Yoko Kebukawa, Tomoki Nakamura, Moe Matsuoka, Sho Sasaki, Akira Tsuchiyama, Matthieu Gounelle, Loan Le, James Martinez, Kent Ross, Zia Rahman

Meteoritics & Planetary Science 49 ( 11 ) 1997 - 2016 2014.11

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DOI： 10.1111/maps.12386

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Diamond xenolith and matrix organic matter in the Sutter's Mill meteorite measured by C-XANES Reviewed

Yoko Kebukawa, Michael E. Zolensky, A. L, David Kilcoyne, Zia Rahman, Peter Jenniskens, George D. Cody

Meteoritics & Planetary Science 49 ( 11 ) 2095–2103 2014.11

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Sutter's Mill隕石のSM2-5試料のFIB超薄切片を作成し，STXM-XANES分析を行った。ナノグロビュールのような有機微粒子があり，そのC-XANESスペクトルは周囲のマトリックス中の有機物よりも芳香族炭素が多かった。

DOI： 10.1111/maps.12312

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Infrared imaging spectroscopy with micron resolution of Sutter's Mill meteorite grains Reviewed

Mehmet Yesiltas, Yoko Kebukawa, Robert E. Peale, Eric Mattson, Carol J. Hirschmugl, Peter Jenniskens

METEORITICS & PLANETARY SCIENCE 49 ( 11 ) 2027 - 2037 2014.11

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DOI： 10.1111/maps.12321

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Diamond xenolith and matrix organic matter in the Sutter's Mill meteorite measured by C-XANES Reviewed

Yoko Kebukawa, Michael E. Zolensky, A. L. David Kilcoyne, Zia Rahman, Peter Jenniskens, George D. Cody

METEORITICS & PLANETARY SCIENCE 49 ( 11 ) 2095 - 2103 2014.11

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DOI： 10.1111/maps.12312

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Sequential analysis of carbonaceous materials in Hayabusa-returned samples for the determination of their origin Reviewed

Masayuki Uesugi, Hiroshi Naraoka, Motoo Ito, Hikaru Yabuta, Fumio Kitajima, Yoshinori Takano, Hajime Mita, Ichiro Ohnishi, Yoko Kebukawa, Toru Yada, Yuzuru Karouji, Yukihiro Ishibashi, Takaaki Okada, Masanao Abe

EARTH PLANETS AND SPACE 66 102 2014.8

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DOI： 10.1186/1880-5981-66-102

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Elemental, isotopic, and structural changes in Tagish Lake insoluble organic matter produced by parent body processes Reviewed

Conel M, O'D. Alexander, George D. Cody, Yoko Kebukawa, Roxane Bowden, Marilyn L. Fogel, A. L. David Kilcoyne, Larry R. Nittler, Christopher D. K. Herd

Meteoritics & Planetary Science 49 ( 4 ) 503–525 2014.4

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Tagish Lake隕石の4つの異なる岩相について，それぞれの不溶性有機物の赤外分光分析を行い，それぞれの岩相の変成度に対応した有機物の変化を明らかにした。

DOI： 10.1111/maps.12282

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Exploring the potential formation of organic solids in chondrites and comets through polymerization of interstellar formaldehyde Reviewed

Yoko Kebukawa, A. L. David Kilcoyne, George D. Cody

Astrophysical Journal 771 ( 1 ) 19 2013.7

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DOI： 10.1088/0004-637X/771/1/19

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The study of organic molecules in small primitive bodies, now and the future : II. Insoluble organic matter (IOM) Invited Reviewed

Yoko Kebukawa

Planetary People 22 ( 1 ) 14 - 22 2013.3

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Compositional diversity in insoluble organic matter in type 1, 2 and 3 chondrites as detected by infrared spectroscopy Reviewed

Yoko Kebukawa, Conel M. O'D. Alexander, George D. Cody

GEOCHIMICA ET COSMOCHIMICA ACTA 75 ( 12 ) 3530 - 3541 2011.6

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DOI： 10.1016/j.gca.2011.03.037

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Origin and Evolution of Prebiotic Organic Matter As Inferred from the Tagish Lake Meteorite Reviewed

Christopher D. K. Herd, Alexandra Blinova, Danielle N. Simkus, Yongsong Huang, Rafael Tarozo, Conel M. O'D. Alexander, Frank Gyngard, Larry R. Nittler, George D. Cody, Marilyn L. Fogel, Yoko Kebukawa, A. L. David Kilcoyne, Robert W. Hilts, Greg F. Slater, Daniel P. Glavin, Jason P. Dworkin, Michael P. Callahan, Jamie E. Elsila, Bradley T. De Gregorio, Rhonda M. Stroud

SCIENCE 332 ( 6035 ) 1304 - 1307 2011.6

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DOI： 10.1126/science.1203290

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Spatial distribution of organic matter in the Bells CM2 chondrite using near-field infrared micro-spectroscopy Reviewed

Yoko KEBUKAWA, Satoru NAKASHIMA, Michio ISHIKAWA, Kento AIZAWA, Tsutomu INOUE, Keiko NAKAMURA-MESSENGER, Michael E. ZOLENSKY

Meteoritics & Planetary Science 45 ( 3 ) 394–405 2010.3

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DOI： 10.1111/j.1945-5100.2010.01030.x

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Spatial distribution of organic matter in the Bells CM2 chondrite using near-field infrared microspectroscopy Reviewed

Yoko Kebukawa, Satoru Nakashima, Michio Ishikawa, Kento Aizawa, Tsutomu Inoue, Keiko Nakamura-Messenger, Michael E. Zolensky

Meteoritics and Planetary Science 45 ( 3 ) 394 - 405 2010.3

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DOI： 10.1111/j.1945-5100.2010.01030.x

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Kinetics of organic matter degradation in the Murchison meteorite for the evaluation of parent body temperature history Reviewed

Yoko KEBUKAWA, Satoru NAKASHIMA, Michael E. ZOLENSKY

Meteoritics & Planetary Science 45 ( 1 ) 99–113 2010.1

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DOI： 10.1111/j.1945-5100.2009.01008.x

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Kinetics of organic matter degradation in the Murchison meteorite for the evaluation of parent-body temperature history Reviewed

Yoko Kebukawa, Satoru Nakashima, Michael E. Zolensky

Meteoritics and Planetary Science 45 ( 1 ) 99 - 113 2010.1

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DOI： 10.1111/j.1945-5100.2009.01008.x

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Rapid contamination during storage of carbonaceous chondrites prepared for micro FTIR measurements Reviewed

Yoko Kebukawa, Satoru Nakashima, Takahiro Otsuka, Keiko Nakamura Messenger, Michael E. Zolensky

Meteoritics and Planetary Science 44 ( 4 ) 545 - 557 2009.4

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DOI： 10.1111/j.1945-5100.2009.tb00750.x

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Rapid contamination during storage of carbonaceous chondrites prepared for micro FTIR measurements Reviewed

Yoko KEBUKAWA, Satoru NAKASHIMA, Takahiro OTSUKA, Keiko NAKAMURA-MESSENGER, Michael E. ZOLENSKY

Meteoritics & Planetary Science 44 ( 4 ) 545–557 2009.4

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DOI： 10.1111/j.1945-5100.2009.tb00750.x

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Submicron Distribution of Organic Matter of Carbonaceous Chondrite Using Near-field Infrared Microspectroscopy Reviewed

Yoko Kebukawa, Satoru Nakashima, Keiko Nakamura-Messenger, Michael E. Zolensky

CHEMISTRY LETTERS 38 ( 1 ) 22 - 23 2009.1

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DOI： 10.1246/cl.2009.22

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Thermal Stabilities of Organic Matter in Carbonaceous Chondrites and Effects of Minerals Reviewed

KEBUKAWA Yoko, NAKASHIMA Satoru

Planetary people 17 ( 4 ) 232 - 237 2008.12

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Encyclopedia of Astrobiology

（ Role： ContributorInfrared Spectroscopy）

Springer 2011

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MISC

ポストたんぽぽ計画での宇宙曝露実験の進捗情報報告2022

三田, 肇, 矢野, 創, 横谷, 香織, 杉本, 学, 藤田, 知道, T., Milojevic, 横堀, 伸一, 別所, 義隆, 中川, 和道, 小林, 憲正, 癸生川, 陽子, 山岸, 明彦, 加藤, 浩, 阿部, 智子, 木村, 駿太, オン, 碧, CHANG-HYUN, Maeng, 鈴木, 利貞, 浅野, 眞希, 日渡, 祐二, 久米, 篤, 奥平, 恭子, たんぽぽチーム, MITA, Hajime, YANO, Hajime, TOMITA-YOKOTANI, Kaori, SUGIMOTO, Manabu, FUJITA, Tomomichi, YOKOBORI, Shinichi, BESSHO, Yoshitaka, NAKAGAWA, Kazumichi, KOBAYASHI, Kensei, KEBUKAWA, Yoko, YAMAGISHI, Akihiko, KATOH, Hiroshi, ABE, Tomoko, KIMURA, Shunta, ONG, Midori, SUZUKI, Toshisada, ASANO, Maki, HIWATARI, Yuji, KUME, Atsushi, OKUDAIRA, Kyoko, Tanpopo, Team

宇宙環境利用シンポジウム第37回：令和四年度 = Space Utilization Research, Vol. 37 2022: Proceedings of The Thirty-seventh Space Utilization Symposium 2023.1

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第37回宇宙環境利用シンポジウム (2023年1月17日-18日. オンライン開催)
Space Utilization Research (January 17-18, 2023. Online Meeting)
著者人数: 22名ほか
資料番号: SA6000180007
G-1

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小天体表面を想定した宇宙曝露および紫外線照射による隕石有機物とその模擬物質の変化

清水航介, 古賀優志, 左近樹, 小林憲正, 三田肇, 矢野創, 癸生川陽子

日本惑星科学会秋季講演会予稿集(Web) 2023 2023

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次世代小天体サンプルリターンミッションの目指すサイエンス

黒川宏之, 嶌生有理, 岡田達明, 佐伯孝尚, 津田雄一, 森治, 坂谷尚哉, 深井稜汰, 青木順, 癸生川陽子, 熊本篤志, 田中智, 川村太一, 浦川聖太郎, 巽瑛理, 高尾勇輝, 菊地翔太, 瀧川晶, 奥住聡, 古家健次, 金丸仁明, 荒川創太

日本惑星科学会秋季講演会予稿集(Web) 2023 2023

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隕石有機物やその模擬物質の宇宙曝露および紫外線照射による分子構造変化

古賀優志, 癸生川陽子, 左近樹, 小林憲正, 三田肇, 矢野創

Viva Origino (Web) 50 ( 1 ) 2022

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Organic matter in Ryugu vs. carbonaceous chondrites: IR spectroscopic perspectives

癸生川陽子, DARTOIS E., QUIRICO E., BONAL L., ENGRAND C., DUPRAT J., MATHURIN J., DAZZI A., DENISET-BESSEAU A., 薮田ひかる, 圦本尚義, 中村智樹, 野口高明, 岡崎隆司, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一

日本地球化学会年会要旨集(Web) 69th 2022

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リュウグウの微粒子と酸不溶性有機物の特徴:ラマン分光法による考察

小松睦美, 小松睦美, 薮田ひかる, 癸生川陽子, BONAL Lydie, QUIRICO Eric, 圦本尚義, 中村智樹, 野口高明, 岡崎隆司, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一

日本惑星科学会秋季講演会予稿集(Web) 2022 2022

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Formation and alteration of organic compounds in possible space environments by heavy ion bombardment

小林憲正, 癸生川陽子, 五東弘昭, 佐藤智仁, 倉本想士, 浅野真哉, 菅谷ことみ, 内藤弘毅, 横堀伸一, 吉田聡

量子科学技術研究開発機構研究報告書(Web) ( 17 ) 2020

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宇宙航空研究開発機構(JAXA)宇宙科学研究所地球外物質研究グループを訪ねて

癸生川陽子, 沖野晃俊, 阿南弥寿美

ぶんせき2019 2019 ( 9 ) 405 - 406 2019.5

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重粒子線照射による模擬宇宙環境下での有機物の生成とその変成

小林憲正, 癸生川陽子, 五東弘昭, 佐藤智仁, 倉本想士, 浅野真哉, 横堀伸一, 吉田聡

量子科学技術研究開発機構研究報告書(Web) ( 13 ) 2019

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アラニン線量計による国際宇宙ステーションISSでの真空紫外線量計測とアラニン2量体生成の初観測

中川和道, 小林憲正, 癸生川陽子, 三田肇, 橋本博文, 矢野創, 山岸明彦

放射線化学討論会講演要旨集 61st 2018

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重粒子線照射による模擬宇宙環境下での有機物の生成とその変成

小林憲正, 癸生川陽子, 五東弘昭, 青木涼平, 原田拓, 佐藤智仁, 横堀伸一, 吉田聡

量子科学技術研究開発機構研究報告書(Web) ( 8 ) 2018

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重粒子線照射による模擬宇宙環境下での有機物の生成とその変成

小林憲正, 癸生川陽子, 五東弘昭, 松田知之, 榎本真吾, 阿部仁美, 横堀伸一, 吉田聡

量子科学技術研究開発機構研究報告書(Web) ( 6 ) 2017

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Report on the workshop for Jupiter Trojan Exploration by Solar Power Sail

Kebukawa Yoko, Kawai Yosuke, Aoki Jun, Okada Tatsuaki, Ito Motoo

Planetary People - The Japanese Society for Planetary Sciences 26 ( 4 ) 187 - 189 2017

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Language：Japanese Publisher：The Japanese Society for Planetary Sciences

DOI： 10.14909/yuseijin.26.4_187

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宇宙実験による化学進化の検証たんぽぽ計画の現状とポストたんぽぽの検討

小林憲正, 三田肇, 癸生川陽子, 藪田ひかる, 奥平恭子, 中川和道, 別所義隆, 今井栄一, 佐々木聡, 矢野創, 橋本博文, 横堀伸一, 山岸明彦

宇宙航空環境医学 53 ( 4 ) 137 - 137 2016.12

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ORGANIC AGGREGATES WITH delta D AND delta N-15 ANOMALIES IN THE ZAG CLAST REVEALED BY STXM AND NANOSIMS

Y. Kebukawa, M. Ito, M. E. Zolensky, Z. Rahman, A. L. D. Kilcoyne, A. Nakato, Y. Takeichi, H. Suga, C. Miyamoto, K. Mase, Y. Takahashi, Q. Chan, M. Fries

METEORITICS & PLANETARY SCIENCE 51 A366 - A366 2016.8

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重粒子線照射による模擬宇宙環境下での有機物の生成とその変成

小林憲正, 癸生川陽子, 五東弘昭, 松田知之, 榎本真吾, 阿部仁美, 横堀伸一, 吉田聡

NIRS-M (National Inst. of Radiological Sciences) ( 289 ) 2016

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有機物・微生物の宇宙曝露と宇宙塵・微生物の捕集「たんぽぽ」:その概要と準備状況

山岸明彦, 横堀伸一, 矢野創, 橋本博文, 河口優子, 今井栄一, 奥平恭子, 河合秀幸, 癸生川陽子, 小林憲正, 佐々木聰, 田端誠, 中川和道, 東出真澄, 三田肇, 薮田ひかる

宇宙航空研究開発機構特別資料 JAXA-SP- JAXA-SP-14-013 ( 14-013 ) 548 - 549 2015.3

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Capture of cosmic dusts and exposure of amino acids and related compounds in Low Earth Orbit: Report of ongoing space mission TANPOPO

Kobayashi Kensei, Kawai Hideyuki, Yano Hajime, Hashimoto Hirofumi, Yamagishi Akihiko, WG Tanpopo, Mita Hajime, Yabuta Hikaru, Kebukawa Yoko, Nakagawa Kazumichi, Imai Eiichi, Okudaira Kyoko, Ishibashi Yukihiro, Tabata Makoto

Abstracts of Annual Meeting of the Geochemical Society of Japan 62nd ( 0 ) 119 - 119 2015

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地球生命の誕生に，地球外有機物が重要な役割を果たした可能性が議論されている。特に宇宙塵（惑星間塵）は有機物の運び手として重要であると考えられる。たんぽぽ計画は，国際宇宙ステーション曝露部でエアロゲルを用いて高速で飛来する宇宙塵等を捕集し，分析することや，宇宙塵中の有機物の宇宙での安定性を評価するためにアミノ酸関連分子の宇宙曝露を行うこと等を含む日本初のアストロバイオロジー実験であり，2015年5月に実験が開始された。本講演では，その現状と，2016年以降に予定されている帰還後の分析準備について報告する。

DOI： 10.14862/geochemproc.62.0_119

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重粒子線照射による模擬宇宙環境下での有機物の生成とその変成

小林憲正, 金子竹男, 大林由美子, 癸生川陽子, 五東弘昭, 時村隼人, 松田知之, 横堀伸一, 吉田聡

NIRS-M (National Inst. of Radiological Sciences) ( 285 ) 2015

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New Face

KEBUKAWA Yoko

Planetary People 18 ( 3 ) 168 - 169 2009.9

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Language：Japanese Publisher：The Japanese Society for Planetary Sciences

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宇宙で生命の起源と分布を探るー地球周回軌道におけるアストロバイオロジー実験研究班WG報告―

石川洋二, 今井栄一, 内海裕一, 大石雅寿, 奥平恭子, 河合秀幸, 河崎行繁, 癸生川陽子, 小池惇平, 斉藤香織, 鈴木彰子, 高橋淳一, 中川和道, 中嶋悟, 長沼毅, 奈良岡浩, 橋本博文, 福島和彦, 本多元, 丸茂克美, 三田肇, 宮川厚夫, 藪田ひかる, 山岸明彦, 山下雅道, 吉村義隆

Space Utilization Research 25 in press 2009

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地球周回軌道におけるアストロバイオロジー実験研究班活動報告

小林憲正, 石川洋二, 内海裕一, 奥平恭子, 河合秀幸, 河崎行繁, 癸生川陽子, 小池惇平, 鈴木彰子, 高橋淳一, 中嶋悟, 長沼毅, 奈良岡浩, 橋本博文, 丸茂克美, 三田肇, 山岸明彦, 山下雅道, 今井栄一, 中川和道, 福島和彦, 吉村義隆

Space Utiliz. Res 24 318 - 321 2008

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炭素質隕石中有機物の顕微赤外分光加熱その場観測--惑星生命物質科学の試み (総特集新しい地球惑星生命科学)

癸生川陽子, 中嶋悟

月刊地球 26 ( 8 ) 507 - 511 2004.8

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Language：Japanese Publisher：海洋出版

CiNii Books

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Presentations

ポストたんぽぽ計画の進捗状況

三田, 肇, 矢野, 創, 左近, 樹, 小林, 憲正, 癸生川, 陽子, 横谷, 香織, 中川, 和道, 杉本, 学, MILOJEVIC, Tetyana, 山岸, 明彦, 横堀, 伸一, 別所, 義隆, 加藤, 浩, 安部, 智子, 遠藤, いずみ, 木村, 駿太, オン, 碧, 大森, 正之, 藤田, 知道, 鈴木, 利貞, 浅野, 眞希, 奥平, 恭子, 今井, 栄一, ポストたんぽぽ研究チーム, MITA, Hajime, YANO, Hajime, SAKON, Itsuki, KOBAYASHI, Kensei, KEBUKAWA, Yoko, TOMITA-YOKOTANI, Kaori, NAKAGAWA, Kazumichi, SUGIMOTO, Manabu, YAMAGICHI, Akihiko, YOKOBORI, Shin-ichi, BESSHO, Yoshitaka, KATOH, Hiroshi, ABE, Tomoko, ENDO, Izumi, KIMURA, Shunta, ONG, Midori, OHMORI, Masayuki, FUJITA, Tomomichi, SUZUKI, TOshisada, ASANO, Maki, OKUDAIRA, Kyoko, IMAI, Eiichi

宇宙環境利用シンポジウム第36回：令和三年度 = Space Utilization Research, Vol. 36 2021: Proceedings of The Thirty-sixth Space Utilization Symposium 2022.1 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)

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Event date： 2022.1

Language：Japanese

第36回宇宙環境利用シンポジウム (2022年1月18日-19日. オンライン開催)
Space Utilization Research (January 18-19, 2022. Online Meeting)
著者人数: 23名ほか
資料番号: SA6000168002
G-01

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ポストたんぽぽ計画における宇宙曝露実験—Space exposure experiments in post-Tanpopo missions

三田, 肇, 矢野, 創, 左近, 樹, 小林, 憲正, 癸生川, 陽子, 横谷, 香織, 中川, 和道, 山岸, 明彦, 杉本, 学, TETYANA, Milojevic, 別所, 義隆, 中山, 美紀, 白水, まどか, 横尾, 卓哉, 佐藤, 智仁, MITA, Hajime, YANO, Hajime, SAKON, Itsuki, KOBAYASHI, Kensei, KEBUKAWA, Yoko, TOMITA-YOKOTANI, Kaori, NAKAGAWA, Kazumichi, YAMAGICHI, Akihiko, SUGIMOTO, Manabu, BESSHO, Yoshitaka, NAKAYAMA, Miki, SHIROMIZU, Madoka, YOKOO, Takuya, SATO, Tomohiro

宇宙環境利用シンポジウム第35回：令和二年度 = Space Utilization Research, Vol. 35 2020: Proceedings of The Thirty-fifth Space Utilization Symposium 2021.1 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)

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Event date： 2021.1

Language：Japanese

第35回宇宙環境利用シンポジウム(2021年1月19日-20日. オンライン開催)
Space Utilization Research (January 19-20, 2021. Online Meeting)
著者人数: 15名
資料番号: SA6000156027
レポート番号: S-03

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Establishment and application of STXM system for the development of aquaplanetology research

高橋嘉夫, 高橋嘉夫, 河合敬宏, 武市泰男, 福士圭介, 木村正雄, 中田亮一, 若林大祐, 山下翔平, 菅大暉, 薮田ひかる, 癸生川陽子, 諸野祐樹, 浦本豪一郎, 白石史人, 浅野眞希, 板井啓明, 奥村大河, 宮原正明, 岩井久典, 坂田昂平, 小野寛太, 関根康人

量子ビームサイエンスフェスタ(Web) 2021

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Effects of space exposures on organic matter to understand the surface process of small bodies in the Solar System

Kebukawa Yoko, Koga Masashi, Matsuoka Moe, Sakon Itsuki, Kobayashi Kensei, Ito Motoo, Yamashita Shohei, Takeishi Yasuo, Takahashi Yoshio, Hajime Mita, Yano Hajime

Abstracts of Annual Meeting of the Geochemical Society of Japan 2021 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2021

Language：Japanese

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急冷窒素含有炭素質物質の宇宙環境曝露実験-帰還試料の初期分析報告

遠藤いずみ, 左近樹, 尾中敬, 癸生川陽子, 小林憲正, 三田肇, 矢野創

日本天文学会年会講演予稿集 2021

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Stability of Amino Acids and Amino Acid Precursors in Space: Approaches Through Space Experiments (Tanpopo and Tanpopo 2) and Ground Simulation Experiments

小林憲正, 佐藤智仁, 横尾卓哉, 左近樹, 中川和道, 矢野創, 中山美紀, 三田肇, 橋本博文, 横堀伸一, 山岸明彦, 山岸明彦, 吉田聡, 依田功, 福田一志, 小栗慶之, 神田一浩, 柴田裕実, 高橋淳一, 癸生川陽子

日本地球惑星科学連合大会予稿集(Web) 2020

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分子雲中での高分子態アミノ酸前駆体の生成とその宇宙安定性の検証

小林憲正, 倉本想士, 佐藤智仁, 横尾拓哉, 癸生川陽子, 三田肇, 中川和道, 吉田聡, 福田一志, 小栗慶之, 柴田裕実, 矢野創, 山岸明彦, 山岸明彦, 左近樹

日本惑星科学会秋季講演会予稿集(Web) 2020

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THERMAL HISTORY OF CARBONACEOUS CHONDRITE PECORA ESCARPMENT 02012.

Nakato A, Brearley A. J, Nakamura T, Noguchi T, Kebukawa Y, Lee J. I, Matsuoka M, Sasaki S, Shirai N

METEORITICS & PLANETARY SCIENCE 2019.8

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Event date： 2019.8

Language：English

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KINETIC ESTIMATION OF THE THERMAL HISTORY OF ORGANIC MATTER IN CHONDRITES USING RAMAN SPECTROSCOPY.

Kiryu K, Kebukawa Y, Igisu M, Shibuya T, Kobayashi K

METEORITICS & PLANETARY SCIENCE 2019.8

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Language：English

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SPACE EXPOSURE EXPERIMENTS OF CARBONACEOUS CHONDRITES, CHONDRITIC ORGANIC MATTER AND ITS ANALOGUES IN TANPOPO2, ASTROBIOLOGY SPACE MISSION ON ISS.

Kebukawa Y, Koga M, Sakon I, Endo I, Kobayashi K, Matsuoka M, Ito M, Zolensky M. E, Alexander C. M. O'D, Mita H, Yano H

METEORITICS & PLANETARY SCIENCE 2019.8

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Language：English

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EFFECTS OF SHORT-TERM HEATING ON THE ORGANIC CONTENT OF THE EXPERIMENTALLY-HEATED TAGISH LAKE METEORITE

Chan Q. H. S, Nakato A, Kebukawa Y, Zolensky M. E, Nakamura T, Maisano J. A, Colbert M. W, Martinez J. E, Kilcoyne A. L. D, Suga H, Takahashi Y, Takeichi Y, Mase K, Wright I. P

METEORITICS & PLANETARY SCIENCE 2019.8

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Language：Japanese

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INTERACTION BETWEEN ORGANIC MATTER AND MINERALS IN METEORITE PARENT BODIES DURING THERMAL PROCESSES

Hirakawa N, Kebukawa Y, Kobayashi K, Nakano H

METEORITICS & PLANETARY SCIENCE 2019.8

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ISOTOPIC MEASUREMENTS OF < 100 ng CARBON AND NITROGEN THROUGH EA/IRMS AND ITS APPLICATION TO EXTRATERRESTRIAL MATERIALS.

Ogawa N. O, Kebukawa Y, Zolensky M, Takano Y, Ohkouchi N

METEORITICS & PLANETARY SCIENCE 2019.8

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Event date： 2019.8

Language：English

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ORGANIC COMPOUNDS IN EARLY SOLAR SYSTEM AQUEOUS FLUIDS.

Bodnar R. J, Dolocan A, Zolensky M. E, Lamadrid H, Kebukawa Y, Chan Q. H-S, Rahman Z

METEORITICS & PLANETARY SCIENCE 2019.8

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Language：English

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窒素含有炭素質物質の宇宙曝露実験計画

遠藤いずみ, 左近樹, 尾中敬, 癸生川陽子, 小林憲正, 三田肇, 矢野創

日本天文学会年会講演予稿集 2019.2

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Event date： 2019.2

Language：Japanese

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宇宙におけるアミノ酸前駆体の安定性評価:「たんぽぽ」から「たんぽぽ2」へ

小林憲正, 佐藤智仁, 横尾卓哉, 倉本想士, 癸生川陽子, 三田肇, 中山美紀, 左近樹, 遠藤いずみ, 中川和道, 高橋淳一, 柴田裕実, 神田一浩, 吉田聡, 依田功, 福田仁志, 小栗慶之, 矢野創, 橋本博文, 今井栄一, 横堀伸一, 山岸明彦

日本分析化学会年会講演要旨集(Web) 2019

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Space exposure experiment of Quenched Nitrogen-included Carbonaceous Composite (QNCC)

遠藤いずみ, 左近樹, 尾中敬, 癸生川陽子, 小林憲正, 横尾卓哉, 三田肇, 矢野創

宇宙科学技術連合講演会講演集(CD-ROM) 2019

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Aguas Zarcas(CM2)隕石の有機物分析:Typical CM2or not?

癸生川陽子, ZOLENSKY Michael E., 大東琢治, 近藤正志, 伊藤元雄, 兒玉優, 小林憲正

日本惑星科学会秋季講演会予稿集(Web) 2019

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急冷窒素含有炭素質物質の性質と宇宙曝露実験

遠藤いずみ, 左近樹, 尾中敬, 癸生川陽子, 小林憲正, 三田肇, 矢野創

日本地球惑星科学連合大会予稿集(Web) 2019

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Event date： 2019

Language：Japanese

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アラニン線量計による国際宇宙ステーションISSでの真空紫外線量計測とアラニン2量体生成の初観測

中川和道, 小林憲正, 癸生川陽子, 三田肇, 橋本博文, 矢野創, 山岸明彦

放射線化学討論会講演要旨集 2018.9

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Event date： 2018.9

Language：Japanese

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POSSIBLE EFFECTS OF GAMMA-RAY FROM SHORT-LIVED RADIOACTIVE NUCLIDES ON FORMATION OF ORGANIC MATTER DURING AQUEOUS ALTERATION.

Kebukawa Y, Misawa S, Asano S, Yoda I, Mita H, Muramatsu Y, Hamanaka S, Tobita Y, Kobayashi K

METEORITICS & PLANETARY SCIENCE 2018.8

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Event date： 2018.8

Language：Japanese

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OKEANOSが拓く深宇宙小惑星探査における質量分析

青木順, 癸生川陽子, 伊藤元雄, 松本純, 河井洋輔, 岡田達明

質量分析総合討論会講演要旨集 2018.5

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Event date： 2018.5

Language：Japanese

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Bells隕石の有機物はユニークか?―軟X線顕微鏡による微小領域分析

癸生川陽子, 内村絵梨花, 武市泰男, 菅大暉, 大東琢治, 伊藤元雄, 近藤正志, 高橋嘉夫, ZOLENSKY Michael E, 小林憲正

日本地球化学会年会要旨集(Web) 2018

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Event date： 2018

Language：Japanese

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Astronomy and planetary science with OKEANOS during the cruising phase

松浦周二, 岩田隆浩, 岡田達明, 吉川真, 森治, 中条俊大, 松本純, 矢野創, 松岡彩子, 野村麗子, 津村耕司, 平井隆之, 米徳大輔, 三原健弘, 癸生川陽子, 伊藤元雄

宇宙科学技術連合講演会講演集(CD-ROM) 2018

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Language：Japanese

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The Organics Exposure Experiment in the Tanpopo Mission: Space Exposure of Amino Acids and Their Precursors for 1-2 Years

KOBAYASHI Kensei, MITA Hajime, KEBUKAWA Yoko, NAKAGAWA Kazumichi, MINEMATSU Samaya, SATO Tomohito, NAITO Keisuke, YOKO Takuya, IMAI Eiichi, YANO Hajime, HASHIMOTO Hirofumi, YOKOBORI Shin‐ichi, YAMAGISHI Akihiko

日本地球惑星科学連合大会予稿集(Web) 2018

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Event date： 2018

Language：English

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Formation of Amino Acid Precursors and Caboxylic Acid in Slightly Reducing Primitive Atmospheres by Cosmic rays and Solar Energetic Particles

Kobayashi Kensei, Kawamura Kimitaka, Kunwar Bhagawati, Airapetian Vladimir, Kinoshita Miei, Aoki Ryohei, Ise Jun―ichi, Kebukawa Yoko, Shibata Hiromi, Takahashi Jun―ichi, Fukuda Hitoshi, Yoshiyuki Oguri

Abstracts of Annual Meeting of the Geochemical Society of Japan 2018 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2018

Language：Japanese

In order to examine possible formation of organics in slightly reducing primitive atmospheres, mixtures of N2,CH4,CO2 and H2O were irradiated with high-energy protons or UV light, or were subjected to spark discharges, and amino acids and carboxylic acids in the products were determined. While UV and spark discharges did not yielded amino acids if the molar ratio of CH4 was less than 10%, amino acid precursors gave amino acids even if it was as low as 0.5%. Carboxylic acids were formed by spark discharges or proton irradiation even when no methane was added. It has been reported that young solar-type stars occur superflares. It was suggested that major energy sources for production of amino acids in the primitive Earth atmosphere was extraterrestrial high-energy particles such as galactic cosmic rays and/or solar energetic particles.

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Stability of Amino Acid Precursors Simulated Extraterrestrial Environments

Sato Tomohito, kanda kazhuhiro, Kobayashi Kensei, Kebukawa Yoko, Kuramoto Soshi, Yoshida Satoshi, Fukuda Hitoshi, Oguri Yoshiyuki, Mita Hazhime, Nakagawa kazhumichi

Abstracts of Annual Meeting of the Geochemical Society of Japan 2018 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2018

Language：Japanese



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Simulating Experiments of Thermal Metamorphism of Interstellar Organic Materials in Meteorites' Parent Bodies -To Understand the Interaction with Minerals-

Hirakawa Naoki, Kebukawa Yoko, Kobayashi Kensei, Nakano Hideyuki

Abstracts of Annual Meeting of the Geochemical Society of Japan 2018 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2018

Language：Japanese



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OKEANOS Sample Return Mission

高尾勇輝, 森治, 中条俊大, 菊地翔太, 癸生川陽子, 伊藤元雄, 山田和彦, 澤田弘崇, 川崎茂男, 松本純, 柏岡秀哉, 倉川正也, 渡邉元樹, 大橋郁, 大木優介

宇宙科学技術連合講演会講演集(CD-ROM) 2018

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Language：Japanese

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ソーラー電力セイルOKEANOSによる太陽系ディスク構造探査

岩田隆浩, 松浦周二, 津村耕司, 矢野創, 松岡彩子, 野村麗子, 米徳大輔, 三原建弘, 岡田達明, 癸生川陽子, 伊藤元雄, 吉川真, 松本純, 中条俊大, 森治

日本地球惑星科学連合大会予稿集(Web) 2018

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Event date： 2018

Language：Japanese

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小惑星探査計画OKEANOS:その場質量分析機器開発の現状

伊藤元雄, 松本純, 癸生川陽子, 青木順, 河井洋輔, 渡邊元樹, 池田峻太, 久保勇貴, 岡田達明, GRAND Noel, BUCH Arnaud, 横田勝一郎, 圦本尚義, 圦本尚義, 豊田岐聡, 森治

日本惑星科学会秋季講演会予稿集(Web) 2018

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Mission Outline and System of Solar Power Sail‐craft OKEANOS

森治, 中条俊大, 松下将典, 加藤秀樹, 佐伯孝尚, 松本純, 川口淳一郎, 岡田達明, 岩田隆浩, 西山和孝, 奥泉信克, 佐藤泰貴, 菊地翔太, 癸生川陽子, 伊藤元雄, 高尾勇輝, 久保勇貴, 坂本克也, 大橋郁

宇宙科学技術連合講演会講演集(CD-ROM) 2018

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OKEANOS science of Jupiter Trojan asteroids

癸生川陽子, 癸生川陽子, 岡田達明, 伊藤元雄, 青木順, 河井洋輔, 松本純, 中条俊大, 矢野創, 岩田隆浩, 森治

宇宙科学技術連合講演会講演集(CD-ROM) 2018

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NANOSCALE IMAGING ANALYSIS OF ORGANIC-MINERAL ASSOCIATION IN THE MURCHISON METEORITE BY NANOIR

Y. Kebukawa, H. Kobayashi, N. Baden, N. Urayama, K. Kobayashi

METEORITICS & PLANETARY SCIENCE 2017.8 WILEY

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Language：English

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たんぽぽ計画により宇宙曝露した有機物の分析(第1報)

小林憲正, 三田肇, 癸生川陽子, 中川和道, 青木涼平, 原田拓, 三澤柊介, 内村絵梨花, 佐藤智仁, 内藤敬介, 峰松沙綾, 今井栄一, 矢野創, 橋本博文, 横堀伸一, 山岸明彦

分析化学討論会講演要旨集 2017.5

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Language：Japanese

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Science Exploration and Instruments for Jupiter Trojan Asteroid in the Solar Power Sail Mission

岡田達明, 癸生川陽子, 伊藤元雄, 青木順, 河井洋輔, 寺田健太郎, 豊田岐聡, 岡本千里, 中村良介, 矢野創, 松岡彩子, 横田勝一郎, 岩田隆浩, 松本純, 森治, 圦本尚義, BIBRING Jean‐Pierre, COTTIN Herve, PALOMBA Ernesto, HELBERT Joern, ULAMEC Stephan, JAUMANN Ralf

宇宙科学技術連合講演会講演集(CD-ROM) 2017

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小惑星衝突によるアミノ酸合成の模擬実験(ガス銃実験)

三重野哲, 大河内一輝, 関口俊介, 長谷川直, 阿部仁美, 癸生川陽子, 小林憲正

日本物理学会講演概要集(CD-ROM) 2017

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たんぽぽ計画における有機物曝露実験報告(第1報)

小林憲正, 三田肇, 癸生川陽子, 中川和道, 青木涼平, 原田拓, 三澤柊介, 佐藤智仁, 内藤敬介, 横尾卓哉, 峰松沙綾, 石山公啓, 今井栄一, 矢野創, 橋本博文, 横堀伸一, 山岸明彦

日本惑星科学会秋季講演会予稿集(Web) 2017

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Characterization of Amino Acid Precursors Formed in Simulated Primitive Environments: Is the Strecker Synthesis a Major Formation Pathway of Prebiotic Amino Acids?

Kobayashi Kensei, Ryohei Aoki, Ito Takaya, Shingo Enomoto, Yoko Kebukawa, Mita Hajime, Fukuda Hitoshi, Oguri Yoshiyuki

Abstracts of Annual Meeting of the Geochemical Society of Japan 2017 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2017

Language：Japanese

It has been believed that major amino acid formation pathway in prebiotic synthesis is the Strecker synthesis. We analyzed amino acid precursors formed by spark discharges in simulated primitive atmospheres and those formed by proton irradiation of simulated interstellar media. It was found that aminoacetonitrile, an intermediate in the Strecker synthesis is not a major glycine precursor in these reactions. 

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Gamma-ray irradiation experiments for evaluating the formation of amino acid precursors during aqueous alteration in planetesimals.

Shusuke Misawa, Kebukawa Yoko, Yoda Isao, Tachibana Shogo, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 2017 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2017

Language：Japanese

We evaluate the effects of gamma-ray from decay of aluminium-26 as an energy source for the formation of organic matter, specially amino acids during aqueous alteration in early planetesimals. We report experiments of gamma-ray irradiation to solutions containing formaldehyde and ammonia. The results suggest that amino acid precursors were formed by the gamma-ray irradiation to the formaldehyde and ammonia water solutions, and the reaction mechanisms could be different from those of heating.

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2段式軽ガス銃を用いた衝突実験におけるアミノ酸分子合成

関口俊介, 三重野哲, 阿部仁美, 長谷川直, 柴田裕実, 癸生川陽子, 小林憲正

日本地球惑星科学連合大会予稿集(Web) 2017

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Event date： 2017

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Space Exposure of Amino Acids and Their Precursors in the Tanpopo Mission: The First Analysis Report

KOBAYASHI Kensei, MITA Hajime, KEBUKAWA Yoko, NAKAGAWA Kazumichi, AOKI Ryohei, HARADA Taku, MISAWA Shusuke, NAITO Keisuke, SATO Tomohito, IMAI Eiichi, YANO Hajime, HASHIMOTO Hirofumi, YOKOBORI Shin‐ichi, YAMAGISHI Akihiko

日本地球惑星科学連合大会予稿集(Web) 2017

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Event date： 2017

Language：English

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Discovery of Micrometeoroid Impact Signatures on the Tanpopo Aerogel Panels: Early Report of the Initial Sample Analysis of Its First Year Samples Retrieved back to the Earth

YANO Hajime, SASAKI Satoshi, IMANI Junya, HORIKAWA Daiki, KAWAGUCHI Yuko, KEBUKAWA Yoko, OKUDAIRA Kyoko, MITA Hajime, OZAWA Takashi, OZAWA Takashi, ARAI Kazuyoshi, TOMITA Masaru, IMAI Eiichi, TABATA Makoto, YOKOBORI Shin‐ichi, HASHIMOTO Hirofumi, YAMAGISHI Akihiko

日本地球惑星科学連合大会予稿集(Web) 2017

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Event date： 2017

Language：English

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透過型電子顕微鏡(TEM)と走査型透過X線顕微鏡(STXM)による地衣類‐溶岩界面の観察

田村知也, 興野純, 癸生川陽子, 伊藤元雄, 西宮ゆき

日本地球惑星科学連合大会予稿集(Web) 2017

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Event date： 2017

Language：Japanese

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ソーラー電力セイルによる木星トロヤ群小惑星探査計画における着陸その場高分解能質量分析

癸生川陽子, 伊藤元雄, 青木順, 岡田達明, 岡田達明, 河井洋輔, 松本純, 寺田健太郎, 豊田岐聡, 薮田ひかる, 圦本尚義, 圦本尚義, 矢野創, 中村良介, COTTIN Herve, GRAND Noel, 森治

日本惑星科学会秋季講演会予稿集(Web) 2017

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Event date： 2017

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Verification of Abiotic Formation of Bioorganic Compounds by Utilizing Low Earth Orbit

Kebukawa Yoko, Kobayashi Kensei, Mita Hajime, Bessho Yoshitaka, Nakagawa Kazumichi, Shibata Hiromi, Imai Ei-ichi, Takahashi Jun-ichi, Ishibashi Yukihiro, Okudaira Kyoko, Yano Hajime, Hashimoto Hirofumi, Yokobori Shin-ichi, Yamagishi Akihiko, Astrobiology Experiments in Earth Orbit WG

2016.1 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

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Event date： 2016.1

Language：Japanese

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STXM-XANES analyses of Murchison meteorite powders captured by aerogel after hypervelocity impacts: A potential implication of organic matter degradation for micrometeoroid collection experiments

KEBUKAWA Yoko, OKUDAIRA Kyoko, YABUTA Hikaru, NAKATO Aiko, KILCOYNE David, HASEGAWA Sunao, TABATA Makoto, KOBAYASHI Kensei, YOKOBORI Shin‐ichi, IMAI Ei‐ichi, KAWAGUCHI Yuko, YANO Hajime, YAMAGISHI Akihiko

日本地球惑星科学連合大会予稿集(Web) 2016

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Event date： 2016

Language：English

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窒素ガス中飛翔体衝突で発生する高温プルーム内で合成されるアミノ酸の分析(小惑星衝突模擬実験)

三重野哲, 阿部仁美, 大河内一輝, 長谷川直, 柴田裕実, 癸生川陽子, 小林憲正

日本地球惑星科学連合大会予稿集(Web) 2016

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Event date： 2016

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2段式軽ガス銃を用いた小惑星衝突模擬実験によるアミノ酸分子合成

関口俊介, 三重野哲, 長谷川直, 阿部仁美, 癸生川陽子, 小林健正

日本物理学会講演概要集(CD-ROM) 2016

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Event date： 2016

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Coordinated NanoSIMS and iMScope analyses for extraterrestrial organics in carbonaceous chondrites.

Ito Motoo, Kebukawa Yoko, Ijiri Akira, Hashiguchi Minako, Naraoka Hiroshi

Abstracts of Annual Meeting of the Geochemical Society of Japan 2016 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2016

Language：Japanese



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たんぽぽ計画の進行状況:微生物曝露実験と微生物捕集実験を中心として

横堀伸一, 河口優子, 橋本博文, 林宣宏, 東出真澄, 今井栄一, 今仁順也, 河合秀幸, 癸生川陽子, 小林憲正, 三田肇, 中川和道, 奥平恭子, 佐々木聰, 田端誠, 富田(横谷)香織, 薮田ひかる, 矢野創, 山岸明彦

日本微生物生態学会大会(Web) 2016

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Event date： 2016

Language：Japanese

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地球低周回軌道におけるアストロバイオロジー実験:たんぽぽ計画現況報告を中心に

小林憲正, 三田肇, 癸生川陽子, 藪田ひかる, 奥平恭子, 中川和道, 別所義隆, 今井栄一, 佐々木聡, 矢野創, 橋本博文, 横堀伸一, 山岸明彦

日本惑星科学会秋季講演会予稿集(Web) 2016

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Event date： 2016

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Macro-globules in xenolithic clast from Zag meteorite (H5 ordinary chondrite)

Kebukawa Yoko, Takahashi Yoshio, Mase Kazuhiko, Kobayashi Kensei, H. S. Chan Queenie, Fries Marc, Ito Motoo, E. Zolensky Michael, Rahman Zia, L. David Kilcoyne A., Nakato Aiko, Takeichi Yasuo, Suga Hiroki, Miyamoto Chihiro

Abstracts of Annual Meeting of the Geochemical Society of Japan 2016 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2016

Language：Japanese



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アミノ酸関連分子の宇宙変成の解析:たんぽぽ計画の地上準備実験

小林憲正, 癸生川陽子, 三田肇, 榎本真吾, 伊藤隆哉, 中川和道, 今井栄一, 橋本博文, 矢野創, 横堀伸一, 山岸明彦

日本分析化学会年会講演要旨集 2015.8

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Event date： 2015.8

Language：Japanese

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TANPOPO: A NEW MICROMETEOROID CAPTURE AND ASTROBIOLGY EXPOSURE IN LEO: ITS FIRST YEAR OPERATION AND POST-FLIGHT PLAN

H. Yano, A. Yamagishi, H. Hashimoto, S. Yokobori, Y. Kebukawa, Y. Kawaguchi, K. Kobayashi, H. Yabuta, M. Tabata, M. Higashide

METEORITICS & PLANETARY SCIENCE 2015.8 WILEY-BLACKWELL

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Event date： 2015.8

Language：English

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Abiotic Synthesis of Organic Compounds in Space: Report of Astrobiology Experiment in Earth Orbit WG

Kobayashi Kensei, Kebukawa Yoko, Kaneko Takeo, Mita Hajime, Bessho Yoshitaka, Nakagawa Kazumichi, Shibata Hiromi, Imai Eiichi, Takahashi Jun-ichi, Ishibashi Yukihiro, Okudaira Kyoko, Yano Hajime, Hashimoto Hirofumi, Yokobori Shin-ichi, Yamagishi Akihiko

2015.1 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

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Event date： 2015.1

Language：Japanese

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Capture of cosmic dusts and exposure of amino acids and related compounds in Low Earth Orbit: Report of ongoing space mission TANPOPO

Kobayashi Kensei, Mita Hajime, Yabuta Hikaru, Kebukawa Yoko, Nakagawa Kazumichi, Imai Eiichi, Okudaira Kyoko, Ishibashi Yukihiro, Tabata Makoto, Kawai Hideyuki, Yano Hajime, Hashimoto Hirofumi, Yamagishi Akihiko, WG Tanpopo

Abstracts of Annual Meeting of the Geochemical Society of Japan 2015 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2015

Language：Japanese

地球生命の誕生に，地球外有機物が重要な役割を果たした可能性が議論されている。特に宇宙塵（惑星間塵）は有機物の運び手として重要であると考えられる。たんぽぽ計画は，国際宇宙ステーション曝露部でエアロゲルを用いて高速で飛来する宇宙塵等を捕集し，分析することや，宇宙塵中の有機物の宇宙での安定性を評価するためにアミノ酸関連分子の宇宙曝露を行うこと等を含む日本初のアストロバイオロジー実験であり，2015年5月に実験が開始された。本講演では，その現状と，2016年以降に予定されている帰還後の分析準備について報告する。

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地球低周回軌道における宇宙塵の捕集と有機物曝露:たんぽぽ計画開始と帰還後の分析計画

小林憲正, 藪田ひかる, 矢野創, 三田肇, 癸生川陽子, 奥平恭子, 石橋之宏, 中川和道, 今井栄一, 田端誠, 河合秀幸, 橋本博文, 山岸明彦

日本惑星科学会秋季講演会予稿集(Web) 2015

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Event date： 2015

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たんぽぽ計画における微生物並びに有機物宇宙曝露実験

横堀伸一, 河口優子, 小林憲正, 癸生川陽子, 三田肇, 林宣宏, 富田(横谷)香織, 中川和道, 今井栄一, 橋本博文, 矢野創, 山岸明彦

宇宙科学技術連合講演会講演集(CD-ROM) 2015

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Event date： 2015

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低地球周回軌道環境を利用した生体有機物の無生物的生成の検証

小林憲正, 小林憲正, 癸生川陽子, 金子竹男, 三田肇, 別所義隆, 中川和道, 柴田裕実, 今井栄一, 高橋淳一, 石橋之宏, 奥平恭子, 矢野創, 橋本博文, 横堀伸一, 山岸明彦, 山岸明彦

日本地球惑星科学連合大会予稿集(Web) 2015

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Event date： 2015

Language：Japanese

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Jupiter Trojan Exploration mission: Toward the final frontier of the Solar System

Kebukawa Yoko, Usui Fumihiko, Kinoshita Daisuke, Lykawka Patryk, Yoshida Fumi, Nakamura Ryosuke, Aoki Jun, Yano Hajime, Okada Tatsuaki, Mori Osamu, Iwata Takahiro, Matsuura Shuuji, Tsumura Kohji

Abstracts of Annual Meeting of the Geochemical Society of Japan 2015 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2015

Language：Japanese

木星のラグランジュ点付近に存在するトロヤ群小惑星の起源は、よくわかっていない。我々は（１）種々の氷・含水鉱物・有機物が特徴的な吸収を持つ赤外域（とくに2500$\sim$5000 nmの波長域）でトロヤ群小惑星のイメージング分光を行う母機（２）小惑星表面に降り立ち揮発性の高い炭素・水素・窒素・酸素などの同位体比をその場測定する子機、から成るソーラー電力セイル探査機の検討をすすめている。2020年代に打ち上げるために進行中の、ミッション設計・探査候補天体のサーベイ・搭載機器開発について報告する。

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ソーラー電力セイルによる外惑星領域探査:高分解能質量分析装置を用いた木星トロヤ群小惑星着陸その場観測

癸生川陽子, 青木順, 矢野創, 岡田達明, 中村良介, 松本純, 大木優介, 伊藤元雄, 河井洋輔, 岩田隆浩, 松浦周二, 森治

日本惑星科学会秋季講演会予稿集(Web) 2015

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Event date： 2015

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走査型透過X線顕微鏡(STXM)を用いたサステナブル科学の推進

高橋嘉夫, 武市泰男, 井波暢人, 菅大暉, 坂田昂平, 宮本千尋, 光延聖, 朱鳴, 櫻井岳暁, 守友浩, 上岡隼人, 和穎朗太, 山口紀子, 浅野眞希, 薮田ひかる, 癸生川陽子, 間瀬一彦, 小野寛太

物構研サイエンスフェスタ要旨集 2015

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Event date： 2015

Language：Japanese

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The First Report of the Tanpopo Mission after Its Arrival to the International Space Station

KAWAGUCHI Yuko, YANO Hajime, HASHIMOTO Hirofumi, YOKOBORI Shin‐ichi, IMAI Eiichi, MITA Hajime, KAWAI Hideyuko, YABUTA Hikaru, TOMITA‐YOKOTANI Kaori, NAKAGAWA Kazumichi, KOBAYASHI Kensei, OKUDAIRA Kyoko, TABATA Makoto, HIGASHIDE Masumi, HAYASHI Hironobu, SASAKI Satishi, KEBUKAWA Yoko, ISHIBASHI Yukihiko, YAMAGISHI Akihiko

日本地球惑星科学連合大会予稿集(Web) 2015

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Event date： 2015

Language：English

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O6-08 Robust Organic Molecules in Interstellar Chemical Evolution and Their Relevance to Origins of Life

Abstracts Fall Meeting of the Japanese Society for Planetary Sciences 2014.9 The Japanese Society for Planetary Sciences

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Event date： 2014.9

Language：Japanese

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P1-24 Formation of Amino Acid Precursors by Particles Irradiation of Possible Interstellar Media with Various Compositions

Abstracts Fall Meeting of the Japanese Society for Planetary Sciences 2014.9 The Japanese Society for Planetary Sciences

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Event date： 2014.9

Language：Japanese

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Formation of amino acid precursors and nucleic acid bases from simulated interstellar media and evaluation of their robustness

Kobayashi Kensei, Tokimura Hayato, Matsuda Tomoyuki, Enomoto Shingo, Kebukawa Yoko, Kaneko Takeo, Obayashi Yumiko, Mita Hajime, Yoshida Satoshi, Fukuda Hitoshi, Oguri Yoshiyuki

Abstracts of Annual Meeting of the Geochemical Society of Japan 2014 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2014

Language：Japanese

Extraterrestrial organic compounds are promising raw materials for the first life on the earth. We irradiated simulated interstellar media (a mixture of CO, NH?SUB?3?/SUB?, H?SUB?2?/SUB?O, etc.) with high-energy particles. Complex amino acid precursors with high molecular weights and nucleic acid bases were detected among irradiation products. The amino acid precursors and the nucleic acid bases were found more stable than free amino acids against radiation, UV light and heat. Thus it can be said that amino acid precursors and nucleic acid bases are robust molecules for life's origin. It is important to evaluate organic compounds from the point of view of robustness.

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Evaluation of biological activity in Atacama Desert soils by amino acid analysis

Ishikawa Yuto, Kurizuka Taihei, Miyamoto Hina, Obayashi Yumiko, Kaneko Takeo, Kebukawa Yoko, Kobayashi Kensei, Navarro-Gonzalez Rafael

Abstracts of Annual Meeting of the Geochemical Society of Japan 2014 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2014

Language：Japanese

Biological activities have been detected in extreme environments such as super-arid dessert environments. We examined whether amino acid concentration could be used as parameters of biological activities in extreme environments. We determined amino acid concentration of dessert soils sampled at 5 sites in Atacama dessert, Chile, where is one of the most desiccated place on the earth. Amino acid concentration in Atacama is quite low, and the soil obtained at the site with the lowest rainfall level showed the lowest amino acid concentration. Amino acid concentration was correlated to phosphatase activity and viable microbial count.

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有機物・微生物の宇宙曝露と宇宙塵・微生物の捕集(たんぽぽ)

山岸明彦, 横堀伸一, 小林憲正, 山下雅道, 橋本博文, 矢野創, 長谷川直, 河合秀幸, 田端誠, 中嶋悟, 癸生川陽子, 藪田ひかる, 奥平恭子, 丸茂克美, 奈良岡浩, 三田肇

宇宙利用シンポジウム 2009.3

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Event date： 2009.3

Language：Japanese

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303 近接場赤外分光法を用いた炭素質コンドライト中有機物の空間分布(微惑星と原始惑星,オーラルセッション8)

癸生川陽子, 中嶋悟, 中村メッセンジャー圭子, Zolensky Michael E.

日本惑星科学会秋期講演会予稿集 2008.11 日本惑星科学会

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Event date： 2008.11

Language：Japanese

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有機物,微生物の高速衝突非破壊捕集後分析

山岸明彦, 横堀伸一, 坂井伸伍, 阿部勇理也, 東正希, 小林憲正, 藪下さやか, 藤崎健太, 矢野創, 山下雅道, 奥平恭子, 長谷川直, 河合秀幸, 田端誠, 中嶋悟, 癸生川陽子, 鈴木彰子, 三田肇, 丸茂克美

スペース・プラズマ研究会 2008.7

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Event date： 2008.7

Language：Japanese

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有機物・微生物の宇宙曝露と宇宙塵・微生物の捕集(たんぽぽ)

山岸明彦, 横堀伸一, 川口壽太郎, YANG Yinjie, 小林憲正, 薮下さやか, 藤崎健太, 矢野創, 山下雅道, 奥平恭子, 長谷川直, 岸本直子, 橋本博文, 田端誠, 河合秀幸, 中嶋悟, 癸生川陽子, 鈴木彰子, 三田肇, 奈良岡浩, 丸茂克美

宇宙利用シンポジウム 2008.3

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Event date： 2008.3

Language：Japanese

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Search for Extraterrestrial Small Organics by Infrared and Raman Micro-Spectroscopy

Nakashima Satoru, Kebukawa Yoko, Suzuki Akiko, Okudaira Kyoko, Mita Hajime, Kobayashi Kensei, Yamagishi Akihiko

Abstracts of Annual Meeting of the Geochemical Society of Japan 2008 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2008

Cosmic dusts and carbonaceous chondrites are expected to have delivered life's raw materials to the early earth. Because these cosmic organics are very small, their in-situ characterization needs new generation of micro-spectroscopy. The development of infrared (IR) and Raman microscopic imaging spectroscopy enables rapid screening of the presence of organics in cosmic materials. We have been developing near-field infrared spectroscopy beyond the diffraction limit. These new micro-spectroscopic methods will enable measurements of small organic materials contained in cosmic materials returned from the space.

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Organic analysis for the Tanpopo mission

Mita Hajime, Kobayashi Kensei, Yabushita Sayaka, Fujisaki Kenta, Nakashima Satoru, Kebukawa Yoko, Suzuki Akiko, Fukushima Kazuhiko, Saito Kaori, Naraoka Hiroshi, Okudaira Kyoko, Hashimoto Hirofumi, Yamagishi Akihiko

Abstracts of Annual Meeting of the Geochemical Society of Japan 2008 GEOCHEMICAL SOCIETY OF JAPAN

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Event date： 2008

Two organic analysis, which are organic compounds analysis in the captured micrometeorides and stability experiment under cosmic environments, were proposed in the "Tanpopo" mission. Now, we have performed the simulation experiments for the mission in order to confirm the feasibility and obtaine some comparison data. Firstly, alteration of organic compounds at the capturing was examined by using the two-stage light gas gun at ISAS/JAXA. Insoluble organic matter were able to be collected, without hardly alteration using the ultra low density silica aerogel. Secondly, stability of organic compounds under the high-atomic oxygen environment was examined, since atomic oxygen is abundant at ISS altitude. Weight loss of standard capton film and changing color of PAH were observed.

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地球周回軌道におけるアストロバイオロジー実験:宇宙環境下での有機物・微生物・生態系を探る

小林憲正, 三田肇, 石川洋二, 山岸明彦, 内海裕一, 山下雅道, 奥平恭子, 高橋淳一, 河崎行繁, 癸生川陽子, 小池惇平, 鈴木彰子, 長沼毅, 杉浦桂, 奈良岡浩, 加藤政博, 橋本博文, 小林克己, 丸茂克美, 矢野創

宇宙利用シンポジウム 2007.3

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Event date： 2007.3

Language：Japanese

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Experimental simulation of organic matter alteration in carbonaceous chondrites

Kebukawa Yoko, Nakashima Satoru

Abstracts for fall meeting of the Japanese Society for Planetary Science 2007 THE JAPANESE SOCIETY FOR PLANETARY SCIENCES

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Event date： 2007

Organic matter alteration on carbonaceous chondrite parent body was simulated under micro FT-IR with a heating stage. Leonardite (IHSS standard humic acid) and synthetic saponite were used as the macromolecular organics and the matrix mineral. These powdered samples were dispersed by MilliQ water then dropped on an CaF2 plate and dried. They were heated in the heating stage at room temperature to 600C by 10C/min in air, Ar gas and H2+CO2 gas mixture. IR spectra were collected at every 20C under the micro FT-IR. Aliphatic C-H increased from room temperature to approximately 250C then decreased. Aromatic C-H increased from room temperature to around 400-450C then decreased. Aliphatic C-H decreased faster and Aromatic C-H increased faster in Air than in Ar or H2+CO2. The decrease in aliphatic C-H of leonardite and the increase in aromatic C-H were slower with the presence of saponite than those of leonardite only.

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Distribution of organic materials in Tagish Lake meteorite with micro-FTIR mapping measurement

Kebukawa Yoko, Nakashima Satoru, Zolensky Michael

Abstracts for fall meeting of the Japanese Society for Planetary Science 2006 THE JAPANESE SOCIETY FOR PLANETARY SCIENCES

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Event date： 2006

Carbonaceous chondrites are known to contain a few wt. % organic matter whose majority consists of macromolecular organic compounds (e.g. Botta and Bada, 2002; Sephton, 2002). Minerals are suggested to have catalytic effects for the production and alteration processes of these organic materials (e.g. Wing and Bada, 1992; Kerridge, 1999). We conducted mapping measurements of Tagish Lake meteorite grains by Fourier Transform Infrared Micro-Spectroscopy (micro-FTIR) and Scanning Electron Microscopy and Energy Dispersion X-ray Spectrometry (SEM-EDS) for studying the distribution of minerals and organic matter. Tagish Lake was powdered and pressed between two pieces of Al discs to make the sample flat. The mapping area is 590 x 950 microns for micro-FTIR (Jasco IMV-4000 + FTIR-6200; resolution 12.5 microns) and SEM-EDS (JEOL JSM-5510LV + JED-2300). By the micro-FTIR mapping, heterogeneous distribution of aliphatic C-H and organic C-O was observed, and aliphatic C-H was distributed with phyllosilicate O-H. SEM-EDS elemental analysis revealed that aliphatic C-H rich portions were Mg rich and Fe, S poor. These results indicate that aliphatic C-H is coexisting with Mg-rich phyllosilicates.

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Infrared Microspectroscopy of Organics and Hydrous Components in Antarctic Micrometeorites

Suzuki Akiko, Kebukawa Yoko, Nakashima Satoru, Nakamura Tomoki

Abstracts for fall meeting of the Japanese Society for Planetary Science 2006 THE JAPANESE SOCIETY FOR PLANETARY SCIENCES

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Event date： 2006

Some Antarctic Micrometeorites (AMMs) were studied non-destructively by infrared (IR) microspectroscopy for characterizing organic and hydrous components in these particles. Their IR spectra showed absorption peaks of OH (molecular water) at 3400 cm−1, aliphatic carbonaceous components at 2960 cm−1 for CH3 and 2925 and 2860 cm−1 for CH2. By using peak height ratios of CH3/CH2 (2960 cm−1/2925 cm−1) and OH/CH2 (3400 cm−1/2925 cm−1), aliphatic and hydrous component characters of AMMs can be quantitatively investigated. The CH3/CH2 and OH/CH2 ratios of AMMs are ranging 0.6-0.9 and 1-3, respectively. These ratios of AMMs are smaller than those of carbonaceous chondrites. In order to study effects of heating, an AMM was heated in-situ under the IR microscope in atmosphere at temperatures from room temperature (RT) to 600˚C. The peak height ratio of CH3/CH2 remained mostly unchanged from RT to 210˚C and increased from 210˚C to 300˚C. The OH/CH2 ratio decreased from RT to 210˚C and then increased greatly from 210˚C to 300˚C. Effects of aqueous altaeration on micrometeorites are now being studied by hydrothermal experiments on simulated mineral-organic compounds.

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多様な宇宙環境における有機物の生成 Invited

癸生川陽子

第４３回生命の起源及び進化学会 2018.3

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Language：Japanese Presentation type：Oral presentation (invited, special)

Venue：埼玉大学

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Production of amino acids by gamma rays during aqueous alteration process in meteorite parent body

Asano Shinya, Yoda Isao, Muramatsu Yasuji, Kebukawa Yoko, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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Language：Japanese Presentation type：Poster presentation



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Roles of Solar Energetic Particles in Generation of Life in the Early Earth

Kobayashi Kensei, Oguri Yoshiyuki, Airapetian Vladimir, Kinoshita Miei, Mouri Shunsuke, Sakamoto Toshiki, Kebukawa Yoko, Takahashi Jun―ichi, Shibata Hiromi, Kubo Kenya, Fukuda Hitoshi

Abstracts of Annual Meeting of the Geochemical Society of Japan 2020 GEOCHEMICAL SOCIETY OF JAPAN

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Language：Japanese Presentation type：Oral presentation (general)

Roles of solar energetic particles in habitability of the early Earth and in formation of amino acids and their enantiomeric excesses were examined by simulation experiments. SEPs are mainly composed of high energy protons, and it was suggested that high-flux SEPs were generated from the young Sun and entered into Earth atmosphere. It was shown that such SEPs were major energy to form amino acid precursors, in the case that primitive Earth atmosphere was slightly reducing. SEPs were produced N₂O, which is greenhouse effect gas and could be keep the early Earth habitable. SEPs could generate spin-polarized muons, which may have formed enantiomeric excesses of amino acids.

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Evaluation of analytical method of complex organic matter by pyrolysis gas chromatography mass spectrometry for future application to extraterrestrial materials

Mogi Yuto, Kebukawa Yoko, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 2020 GEOCHEMICAL SOCIETY OF JAPAN

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Pyrolysis gas chromatography-mass spectrometry (GC / MS) can reveal more detailed characteristics of the structure of organic matter by changing the pyrolysis temperature. In order to investigate the structure and thermal characteristics of complex organic matter, a method "Continuous" that performs GC / MS analysis at a series of pyrolysis temperatures by repeatedly using the same sample, and a method that prepares a new sample for each pyrolysis temperature "Replaced" step heating methods were examined and evaluated. In addition, Fourier transform infrared spectroscopy (FT-IR) analysis was also performed using a heating stage to observe changes in the sample during analysis.The reproducibility of each of the two methods was confirmed. With the "Replaced" method, it was possible to discriminate fine peaks, and with "Continuous", the difference in the detected compounds was remarkable for each pyrolysis temperature. The results of the experiments using FT-IR were in line with the tendency of the compound species detected at each pyrolysis temperature in the GC / MS experiments. Therefore, it was found that performing pyrolysis GC / MS analysis by changing the pyrolysis temperature using both methods is useful for the analysis of the components and thermal properties of complex organic molecules.

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Alteration of olivine induced by organic matter in meteorite parent bodies

Hirakawa Naoki, Kebukawa Yoko, Furukawa Yoshihiro, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 2020 GEOCHEMICAL SOCIETY OF JAPAN

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Origin of Jupiter Trojan asteroids: What to explore by OKEANOS Invited International conference

Y. Kebukawa

Symposium on Planetary Science 2019 2019.2

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Language：English Presentation type：Oral presentation (general)

Venue：Tohoku University, Sendai

Y. Kebukawa "Origin of Jupiter Trojan asteroids: What to explore by OKEANOS" Symposium on Planetary Science 2019, February 18 – 21, 2019, Tohoku University, Sendai (招待講演)
http://pparc.gp.tohoku.ac.jp/collegium/pdf/SPS2019_program.pdf

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Origin of Jupiter Trojan asteroids: To be explored by OKEANOS Invited International conference

Yoko Kebukawa, Tatsuaki Okada, Motoo Ito, Jun Aoki, Yosuke Kawai, Jun Matsumoto, Noel Grand, Arnaud Buch, Michisato Toyoda, Hervé Cottin, Hisayoshi Yurimoto, Hajime Yano, Takahiro Iwata, Osamu Mori

Japan Geoscience Union Meeting 2019 2019.5 Japan Geoscience Union Meeting

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Venue：Makuhari Messe, Chiba, Japan

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XANESで探る宇宙の複雑有機物 Invited

癸生川陽子

第77回分析化学討論会 2017.5

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Venue：龍谷大学深草学舎（京都市）

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局所分析から探る隕石有機物の母天体過程 Invited

癸生川陽子

第65回質量分析総合討論会 2017.5 日本質量分析学会

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Language：English Presentation type：Oral presentation (invited, special)

Venue：つくば国際会議場（茨城県つくば市）

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Cosmochemistry of Meteorites: Origin and Evolution of Organic Matter Invited

Y. Kebukawa

ACM2017 2017.4

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Venue：Montevideo,Spain

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Organic Matter in Meteorites: From the Grave to the Cradle Invited

Y. Kebukawa

Japanese-American-German Frontiers of Science Symposium 2017.9 AvH, JSPS, JHS, NAS

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Language：English

Venue：Bad Neuenahr, Germany

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Synthesis of Amino Acid Precursors with Organic Solids in Planetesimals with Liquid Water Invited

Y. Kebukawa, Q. H, S. Chan, S. Misawa, J. Matsukuma, S. Tachibana, K. Kobayashi, M. E. Zolensky

XVIIIth International Conference on the Origin of Life 2017.6 Lunar and Planetary Institute

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Venue：San Diego, California, USA

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Formation of various organic matter driven by liquid water in the solar system bodies Invited

Y. Kebukawa

Astrobiology 2017 2017.12

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Venue：Coyhaique, Chile

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Microscopic Approaches Using STXM and TEM for Coevolution of Organic Matter and Minerals in the Carbonaceous Chondrites' Parent Bodies

Kiryu Kento, Kobayashi Kensei, Kebukawa Yoko, Takahashi Yoshio, Takeichi Yasuo, Wakabayashi Daisuke, Ohigashi Takuji, Kondo Masashi, Ito Motoo, Kodama Yu

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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講演番号 PS21-A007 Invited

Yoko KEBUKAWA, Motoo ITO, Michael ZOLENSKY, Richard GREENWOOD, Zia RAHMAN, Hiroki SUGA, Aiko NAKATO, Queenie CHAN, Marc FRIES, Yasuo TAKEICHI, Yoshio TAKAHASHI, Kazuhiko MASE, Kensei KOBAYASHI

AOGS 15th Annual Meeting 2018.6

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Organic-Matter-Induced Alteration of Olivine in Meteorite Parent Bodies

Hirakawa Naoki, Kebukawa Yoko, Kobayashi Kensei, Nakato Aiko, Kondo Masashi

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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Characterization of high molecular weight amino acid precursors formed by particles irradiation of interstellar ice analog

Kuramoto Soushi, Satou Tomohito, Fukuda Hitoshi, Oguri Yoshiyuki, Shibata Hiromi, Yoshida Satoshi, Kebukawa Yoko, Kobayashi Kensei

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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Language：Japanese Presentation type：Poster presentation



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Stability of Amino Acid Precursors Simulated Extraterrestrial Environments

Sato Tomohito, Takahashi Zyunichi, Kebukawa Yoko, Kobayashi Kensei, Kuramoto Soushi, Yoshida Satoshi, Yoda Isao, Fukuda Hitoshi, Oguri Yoshiyuki, MIta Hazhime, Kazhuhiro Kanda, Shibata Hiromi

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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Possible Formation of Amino Acids and Carboxylic Acids in Slightly-Reducing Primitive Earth Atmospheres

Kinoshita Miei, Kebukawa Yoko, Kobayashi Kensei, Ikeda Shintaro, Kawamura Kimitaka, Kunwar Bhagawati, Fukuda Hitoshi, Oguri Yoshiyuki, Shibata Hiromi, Takahashi Jun―ichi, Airapetian Vladimir

Abstracts of Annual Meeting of the Geochemical Society of Japan 2019 GEOCHEMICAL SOCIETY OF JAPAN

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Awards

令和3年度科学技術分野の文部科学大臣表彰若手科学者賞

2021.4 文部科学省太陽系小天体における有機物の形成と進化の研究

癸生川陽子

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Country：Japan

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The Japanese Society for Planetary Sciences Outstanding Young Scientist Award

2016.9 The Japanese Society for Planetary Sciences

Yoko Kebukawa

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Award type：Award from Japanese society, conference, symposium, etc. Country：Japan

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The Geochemical Society of Japan Award for Young Researchers

2015.9 The Geochemical Society of Japan

Yoko Kebukawa

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Award type：Award from Japanese society, conference, symposium, etc. Country：Japan

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Research Projects

Development of a high resolution molecular analyzer based on GC coupled to HRMS for future space explorations

2020.4 - 2022.3

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Grant type：Competitive

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宇宙における有機物の形成・進化および生命の移動・居住可能性に関するアストロバイオロジー宇宙実験研究拠点

2019.4 - 2022.3

自然科学研究機構

癸生川陽子

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Grant type：Competitive

Grant amount：\4500

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隕石から探る木星型惑星大移動説

2019.4 - 2021.3

科学研究費助成事業新学術領域研究「星惑星形成」公募研究

癸生川陽子

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Grant type：Competitive

Grant amount：\2340

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微惑星における有機物進化に対する鉱物の役割の解明

2018.4 - 2021.3

日本学術振興会科学研究費助成事業基盤研究(C)

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\3400 （ Direct Cost: \2380 、 Indirect Cost：\1020 ）

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Formation of amino acids with the presence of liquid water in the Solar System small bodies: Applications for various environments

2018.4 - 2019.3

Yoko Kebukawa

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\1800 （ Direct Cost: \1800 ）

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Ceres の化学：液体の水を伴う化学反応による有機物の形成

2017.4 - 2018.3

自然科学研究機構

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\2700 （ Direct Cost: \2700 ）

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最先端イメージング分析で探る隕石有機物の起源と進化

2016.4 - 2017.3

自然科学研究機構

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\2100 （ Direct Cost: \2100 ）

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小惑星における生命材料有機物の進化

2015.10 - 2016.9

三菱財団

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\3000

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小惑星における生命材料有機物の進化

2015.10 - 2016.9

地方自治体

癸生川陽子

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Grant type：Competitive

Grant amount：\3000 （ Direct Cost: \3000 ）

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脂肪族炭素と芳香族炭素から推定する小惑星の熱履歴

2015.4 - 2017.3

日本学術振興会科学研究費助成事業若手研究(B)

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\3100 （ Direct Cost: \2170 、 Indirect Cost：\930 ）

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隕石有機物を用いた小惑星の熱履歴の研究

2015.4 - 2016.3

地方自治体

癸生川陽子

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Grant type：Competitive

Grant amount：\1000 （ Direct Cost: \1000 ）

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隕石有機物を用いた小惑星の熱履歴の研究

2015.4 - 2016.3

稲盛財団

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

Grant amount：\1000

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始原小天体から原始地球にわたる生命材料有機物の進化（継続）

2014.7 - 2015.3

自然科学研究機構

癸生川陽子

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Authorship：Principal investigator Grant type：Competitive

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始原小天体から原始地球にわたる生命材料有機物の進化

2013.7 - 2014.3

自然科学研究機構

橘省吾

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Grant type：Competitive

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微小領域分析から迫る隕石有機物の進化過程の統一的解明

2013.4 - 2014.3

日本学術振興会科学研究費助成事業特別研究員奨励費

望月(癸生川, 陽子

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Grant type：Competitive

日本学術振興会特別研究員PDとして

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惑星物質中の有機物・鉱物相互関係のミクロ・ナノ非破壊分析

2007.4 - 2009.3

日本学術振興会科学研究費助成事業特別研究員奨励費

望月(癸生川, 陽子

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Grant type：Competitive

日本学術振興会特別研究員DC2として

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Teaching Experience

先端生命環境物質展開実習Ｆ

Institution：横浜国立大学

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先端生命環境物質基礎実習S

Institution：横浜国立大学

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先端生命環境物質基礎実習F

Institution：横浜国立大学

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アストロバイオロジー特論

Institution：横浜国立大学

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化学・生命基礎演習B

Institution：横浜国立大学

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分析化学ⅡA

Institution：横浜国立大学

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分析化学Ⅰ

Institution：横浜国立大学

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先端生命環境物質展開実習Ｓ

Institution：横浜国立大学

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生命化学計測学

Institution：横浜国立大学

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宇宙地球化学

Institution：横浜国立大学

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化学ＥＰ演習Ⅰ

Institution：横浜国立大学

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化学・生命情報処理演習

Institution：横浜国立大学

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生物宇宙地球化学

Institution：横浜国立大学

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生物圏化学計測学

Institution：横浜国立大学

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Media Coverage

コズミックフロント☆NEXT『生命の起源赤い雨のミステリー』 TV or radio program

NHK コズミックフロント☆NEXT『生命の起源赤い雨のミステリー』 2018.6

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平成２９年６月２２日放送

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