宇宙物質科学・宇宙雪氷学グループ

English

　

大場　康弘（OBA, Yasuhiro）

略歴

　

2007年，炭素質隕石中有機化合物の安定同位体組成を用いた起源解明に関する研究で博士 (理学)を取得。

2007.4-2008.3　
University of Nevada-Reno (USA)博士研究員
「溶存酸素分子の消費に伴う酸素同位体分別に関する研究」

2008.4-2009.3　
北海道大学低温科学研究所　博士研究員
「低温固体表面上における星間分子の化学進化に関する研究」

2009.4-2012.3
日本学術振興会特別研究員(PD)
「極低温星間塵表面原子反応によるアミノ酸の生成機構」於　北海道大学低温科学研究所

2012.4-2015.3　
北海道大学低温科学研究所　特任助教
「星間分子雲における化学進化に関する研究」

2015.4-2020.11　
北海道大学低温科学研究所　助教
「星間分子雲および惑星系の化学進化に関する研究」

2020.12-現在
北海道大学低温科学研究所　准教授
「星間分子雲及び惑星系，隕石母天体における化学進化に関する研究」

Publications

    Refereed Journals

    2024

  1. "Investigating the impact of X-ray computed tomography imaging on soluble organic matter in the Murchison meteorite: Implications for Bennu sample analysis"
    D. P. Glavin, S. A. Eckley, J. C. Aponte, E. L. Berger, A. S. Burton, J. P. Dworkin, J. E. Elsila, F. T. Ferguson, Y. Furukawa, H. V. Graham, T. Koga, M. Liss, H. L. McLain, H. Naraoka, Y. Oba, E. T. Parker, K. Righter, P. Schmitt-Kopplin, D. N. Simkus, Y. Takano, H. C. Connolly Jr., D. S. Lauretta
    Meteoritics and Planetary Science, 59, 105-133 (2024).

  2. "Abundant extraterrestrial purine nucleobases in the Murchison meteorite: Implications for a unified mechanism for purine synthesis in carbonaceous chondrite parent bodies"
    T. Koga, Y. Takano, N. O. Ogawa, Y. Oba, H. Naraoka, N. Ohkouchi
    Geochimica et Cosmochimica Acta, 365, 253-265 (2024).

    2023

  3. "Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium"
    Sarah Zeichner, Jose C. Aponte, Surjyendu Bhattacharjee, Guannan Dong, Amy E. Hofmann, Jason P. Dworkin, Daniel P. Glavin, Jamie E. Elsila, Heather V. Graham, Hiroshi Naraoka, Yoshinori Takano, Shogo Tachibana, Allison T. Karp, Kliti Grice, Alex I. Holman, Katherine H. Freeman, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda, Kenji Hamase, Kazuhiko Fukushima, Dan Aoki, Minako Hashiguchi, Hajime Mita, Yoshito Chikaraishi, Naohiko Ohkouchi, Nanako O. Ogawa, Saburo Sakai, Eric T. Parker, Hannah L. McLain, Francois-Regis Orthous-Daunay, Veronique Vuitton, Roland Thissen, Cedric Wolters, Philippe Schmitt-Kopplin, Alexander Ruf , Junko Isa, Norbert Hertkorn, Yasuhiro Oba, Toshiki Koga, Toshihiro Yoshimura, Daisuke Araoka, Haruna Sugahara, Aogu Furusho, Kazunori Sasaki, Hajime Sato, Yoshihiro Furukawa, Junken Aoki, Kuniyuki Kano, Shin-ichiro M. Nomura, Takaaki Yoshikawa, Satoru Tanaka, Mayu Morita, Morihiko Onose, Fumie Kabashima, Kosuke Fujishima, Tomoya Yamazaki, Yuki Kimura, John M. Eiler
    Science, 382, 1411-1416 (2023).

  4. "Determination of the branching ratio of CH3OH + OH reaction on water ice surface at 10 K"
    A. Ishibashi, H. Hidaka, W. M. C. Sameera, Y. Oba, N. Watanabe
    Astrophysical Journal, 960, 90 (2023).

  5. "Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu"
    Toshihiro Yoshimura, Yoshinori Takano, Hiroshi Naraoka, Toshiki Koga, Daisuke Araoka, Nanako O. Ogawa, Philippe Schmitt-Kopplin, Norbert Hertkorn, Yasuhiro Oba, Jason P. Dworkin, José C. Aponte, Takaaki Yoshikawa, Satoru Tanaka, Naohiko Ohkouchi, Minako Hashiguchi, Hannah McLain, Eric T. Parker, Saburo Sakai, Mihoko Yamaguchi, Takahiro Suzuki, Tetsuya Yokoyama, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda, Shogo Tachibana, Hayabusa2 SOM team
    Nature Communications, 14, 5284 (2023)
    プレスリリース "小惑星リュウグウから始原的な「塩（Salt）」と有機硫黄分子群を発見"(JAMSTECほか)

  6. "Ryugu asteroid sample return provides a natural laboratory for primordial chemical evolution"
    Yasuhiro Oba, Yoshinori Takano, Jason P. Dworkin, Hiroshi Naraoka
    Nature Communications, 14, 3107 (2023)
    *This is a Comment article directly commissioned by the Nature Communications editorial team

  7. "Uracil in the carbonaceous asteroid (162173) Ryugu"
    Yasuhiro Oba, Toshiki Koga, Yoshinori Takano, Nanako O. Ogawa, Naohiko Ohkouchi, Daniel P. Glavin, Jason P. Dworkin, Hiroshi Naraoka, Shogo Tachibana, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda, Hayabusa2-initial-analysis SOM team
    Nature Communications, 14, 1292 (2023)
    (本論文は，Nature Communications誌のEditors' Highlightsに選ばれました）
    プレスリリース "小惑星リュウグウに核酸塩基とビタミンが存在！～生命誕生前の分子進化と生命の起源解明に期待～"(北海道大学)
    8. NHK,TBS,読売新聞,産経新聞, 朝日新聞 など，国内外の多くのメディアに掲載されました

  8. "A systematic mechanisttic survery on the reactions between OH radical and CH3OH on ice"
    W. M. C. Sameera, A. P. Jayaweera, A. Ishibashi, H. Hidaka, Y. Oba, N. Watanabe
    Faraday Discussions, 245, 508-518 (2023)

  9. "The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) Ryugu"
    Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Karin E. Dworkin, José C. Aponte, Jamie E. Elsila, John M. Eiler, Yoshihiro Furukawa, Aogu Furusho, Daniel P. Glavin, Heather V. Graham, Kenji Hamase, Norbert Hertkorn, Junko Isa, Toshiki Koga, Hannah L. McLain, Hajime Mita, Yasuhiro Oba, Nanako O. Ogawa, Naohiko Ohkouchi, Francois-Regis Orthous-Daunay, Eric T. Parker, Alexander Ruf, Saburo Sakai, Philippe Schmitt-Kopplin, Haruna Sugahara, Roland Thissen, Véronique Vuitton, Cédric Wolters, Toshihiro Yoshimura, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tomohiro Usui, Takanao Saiki, Takanao Saiki, Fuyuto Terui, Nakazawa Satoru, Sei-ichiro Watanabe, Yuichi Tsuda,
    Earth, Planets, and Space, 75, Article Number 73 (25pp). (2023)

  10. "Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu"
    H. Naraoka, Y. Takano, J. P. Dworkin, Y. Oba, K. Hamase, A. Furusho, N. O. Ogawa, M. Hashiguchi, K. Fukushima, D. Aoki, P. Schmitt-Kopplin, J. C. Aponte, E. T. Parker, D. P. Glavin, H. L. McLain, J. E. Elsila, H. V. Graham, J. M. Eiler, F.-R. Orthous-Daunay, C. Wolters, J. Issa, T. Koga, N. Ohkouchi, Y. Chikaraishi, H. Sugahara, H. Mita, Y. Furukawa, N. Hertkorn, A. Ruf, H. Yurimoto, T. Nakamura, T. Noguchi, R. Okazaki, H. Yabuta, K. Sakamoto, S. Tachibana, H. C. Connolly, Jr., D. S. Lauretta, M. Abe, T. Yada, M. Hshimura, K. Yogata, A.Nakato, M. Yoshitake, A. Suzuki, A. Miyazaki, S. Furuya, K.Hatakeda, H. Soejima, Y. Hitomi, K. Kumagai, T. Usui, T.Hayashi, D. Yamamoto, R. Fukai, K. Kitazato, S. Sugita, N. Namiki, M. Arakawa, H. Ikeda, M. Ishiguro, N. Hirata, K. Wada, Y. Ishihara, R. Noguchi, T. Morota, N. Sakatani, K. Matsumoto, H. Senshu, R. Honda, E. Tatsumi, Y. Yokota, C. Honda, T. Michikami, M. Matsuoka, A. Miura, H. Noda, T. Yamada, K. Yoshihara, K. Kawahara, M. Ozaki, Y.-i. Iijima, H. Yano, M. Hayakawa, T. Iwata, R. Tsukizaki, H. Sawada, S. Hosoda, K. Ogawa, C. Okamoto, N. Hirata, K. Shirai, Y. Shimaki, M. Yamada, T. Okada, Y. Yamamoto, H. Takeuchi, A. Fujii, Y. Takei, K. Yoshikawa, Y. Mimasu, G. Ono, N. Ogawa, S. Kikuchi, S. Nakazawa, F. Terui, S. Tanaka, T. Saiki, M. Yoshikawa, S.-i. Watanabe, Y. Tsuda
    Science, 379, eabn9033, (2023)
    プレスリリース "小惑星探査機「はやぶさ２」初期分析 可溶性有機物分析チーム 研究成果の科学誌「Science」論文掲載について ～"(北海道大学)


  11. "Surface reaction of methyl mercaptan (CH3SH) with hydrogen atoms on amorphous solid water"
    Thanh Nguyen, Yasuhiro Oba, W. M. C. Sameera, Kenji Furuya, Akira Kouchi, Naoki Watanabe
    Astrophysical Journal, 944, 219 (2023)

    2022

  12. "Maleimide Index: A paleo-redox index based on the fragmented fossile-chlorophylls obtained by chromic acid oxidation"
    Kenta Asahina, Satoshi Takahashi, Ryosuke Saito, Kunio Kaiho, Yasuhiro Oba
    RSC Advances, 12, 31061 (2022)

  13. "Chemical and Physical Characterization of the Isolated Protostellar Source CB68: FAUST IV"
    Muneaki Imai, Yoko Oya, Brian Svoboda, Hauyu Baobab Liu, Bertrand Lefloch, Serena Viti, Yichen Zhang, Cecilia Ceccarelli, Claudio Codella, Claire J. Chandler, Nami Sakai, Yuri Aikawa, Felipe O. Alves, Nadia Balucani, Eleonora Bianchi, Mathilde Bouvier, Gemma Busquet, Paola Caselli, Emmanuel Caux, Steven Charnley, Spandan Choudhury, Nicolas Cuello, Marta De Simone, Francois Dulieu, Aurora Duráan, Lucy Evans, Cécile Favre, Davide Fedele, Siyi Feng, Francesco Fontani, Logan Francis, Tetsuya Hama, Tomoyuki Hanawa, Eric Herbst, Shingo Hirano, Tomoya Hirota, Andrea Isella, Izaskun Jímenez-Serra, Doug Johnstone, Claudine Kahane, Romane Le Gal, Laurent Loinard, Ana López-Sepulcre, Luke T. Maud, María José Maureira, Francois Menard, Seyma Mercimek, Anna Miotello, George Moellenbrock, Shoji Mori, Nadia M. Murillo, Riouhei Nakatani, Hideko Nomura, Yasuhiro Oba, Ross O’Donoghue, Satoshi Ohashi, Yuki Okoda, Juan Ospina-Zamudio, Jaime Pineda, Linda Podio, Albert Rimola, Takeshi Sakai, Dominique Segura-Cox, Yancy Shirley, Vianney Taquet, Leonardo Testi, Charlotte Vastel, Naoki Watanabe, Yoshimasa Watanabe, Arezu Witzel, Ci Xue, Bo Zhao, Satoshi Yamamoto
    Astrophysical Journal, 934, 70 (2022)

  14. "FAUST V: Hot methanol in the [BHB2007] 11 protobinary system"
    C. Vastel, F. Alves, C. Ceccarelli, M. Bouvier, I. Jimenez-Serra, T. Sakai, P. Caselli, L. Evans, F. Fontani, R. Le Gal, C. J. Chandler, B. Svoboda, L. Maud, C. Codella, N. Sakai, A. Lopez-Sepulcre, G. Moellenbrock, Y. Aikawa, N. Balucani, E. Bianchi, G. Busquet, E. Caux, S. Charnley, N. Cuello, M. De Simone, F. Dulieu, A. Duran, D. Fedele, S. Feng, L. Francis, T. Hama, T. Hanawa, E. Herbst, T. Hirota, M. Imai, A. Isella, D. Johnstone, B. Lefloch, L. Loinard, M. Maureira, N. M. Murillo, S. Mercimek, S. Mori, F. Menard, A. Miotello, R. Nakatani, H. Nomura, Y. Oba, S. Ohashi, Y. Okoda, J. Ospina-Zamudio, Y. Oya, J. E. Pineda, L. Podio, A. Rimola, D. Segura Cox, Y. Shirley, L. Testi, S. Viti, N. Watanabe, Y. Watanabe, A. Witzel, C. Xue, Y. Zhang, B. Zhao, S. Yamamoto
    Astronomy & Astrophysics, 664, A171 (2022)

  15. "Diffusion activation energy and desorption activation energy for astrochemically relevant species on water ice show no clear relation"
    Kenji Furuya, Tetsuya Hama, Yasuhiro Oba, Akira Kouchi, Naoki Watanabe, Yuri Aikawa
    The Astrophysical Journal Letters, 933, L16 (13pp) (2022)

  16. "Quantum chemical modelling of the radical chemistry on ice surfaces: An integrated quantum chemical and experimental approach"
    W. M. C. Sameera, B. Senevirathne, T. Nguyen, Y. Oba, A. Ishibashi, M. Tsuge, H. Hidaka, N. Watanabe
    Frontiers in Astronomy and Space Sciences, 9, 890161 (2022)

  17. Identifying the wide diversity of extraterrestrial purine and pyrimidine nucleobases in carbonaceous meteorites"
    Y. Oba, Y. Takano, Y. Furukawa, T. Koga, D. P. Glavin, J. P. Dworkin, H. Naraoka
    Nature Communications, 13, 2008 (2022)
    プレスリリース "炭素質隕石から遺伝子の主要核酸塩基5種すべてを検出～地球上での生命の起源・遺伝機能の前生物的な発現に迫る～"(北海道大学)
    18. 読売新聞, 北海道新聞, 産経新聞, 朝日新聞 など，国内外の多くのメディアに掲載されました
    本論文はNature Communications誌における2022年に発表された"Top 25 Earth, Environmental,and Planetary Sciences Articles"として選ばれました

  18. "Hydrogen abstraction reactions in formic and thioformic acid isomers by hydrogen and deuterium atoms"
    G. Molpeceres, I. Jímenez-Serra, Y. Oba, T. Nguyen, N. Watanabe, J. García de la Concepción, B. Maté, R. Oliveira, J. Kästner
    Astronomy & Astrophysics, 663, A41 (2022)

  19. "Quantifying the chemical desorption of H2S and PH3 from amorphous water ice surfaces"
    K. Furuya, Y. Oba, T. Shimonishi
    Astrophysical Journal, 926, 171 (17pp) (2022)

  20. "Misaligned rotations of the envelope, outflow, and disks in the multiple protostellar system of VLA4 1623-2417: FAUST. III"
    Satoshi Ohashi, Claudio Codella, Nami Sakai, Claire J. Chandler, Cecilia Ceccarelli, Felipe Alves, Davide Fedele, Tomoyuki Hanawa, Aurora Durán, Cécile Favre, Ana López-Sepulcre,Laurent Loinard, Seyma Mercimek, Nadia M. Murillo, Linda Podio, Yichen Zhang, Yuri Aikawa, Nadia Balucani,Eleonora Bianchi, Mathilde Bouvier, Gemma Busquet, Paola Caselli, Emmanuel Caux, Steven Charnley, Spandan Choudhury, Nicolas Cuello, Marta De Simone, Francois Dulieu, Lucy Evans, Siyi Feng, Francesco Fontani, Logan Francis, Tetsuya Hama, Eric Herbst, Shingo Hirano, Tomoya Hirota, Muneaki Imai, Andrea Isella, Izaskun Jímenez-Serra, Doug Johnstone, Claudine Kahane, Romane Le Gal, Bertrand Lefloch, Luke T. Maud, Maria Jose Maureira, Francois Menard, Anna Miotello, George Moellenbrock, Shoji Mori, Riouhei Nakatani, Hideko Nomura, Yasuhiro Oba, Ross O'Donoghue, Yuki Okoda, Juan Ospina-Zamudio, Yoko Oya, Jaime Pineda, Albert Rimola, Takeshi Sakai, Dominique Segura-Cox, Yancy Shirley, Brian Svoboda, Vianney Taquet, Leonardo Testi, Charlotte Vastel, Serena Viti, Naoki Watanabe, Yoshimasa Watanabe, Arezu Witzel, Ci Xue, Bo Zhao and Satoshi Yamamoto
    Astrophysical Journal, 927, 54 (22pp) (2022)

    2021

  21. "UV-Induced Formation of Ice XI Observed Using an Ultra-High Vacuum Cryogenic Transmission Electron Microscope and its Implications for Planetary Science"
    Akira Kouchi, Yuki Kimura, Kensei Kitajima, Hiroyasu Katsuno, Hiroshi Hidaka, Yasuhiro Oba, Masashi Tsuge, Tomoya Yamazaki, Kazuyuki Fujita, Tetsuya Hama, Yukihiro Takahashi, Shunichi Nakatsubo, Naoki Watanabe
    Frontiers in Chemistry, 9, 799851 (2021)

  22. "Successive H-atom addition to solid OCS on compact amorphous solid water"
    T. Nguyen, Y. Oba, W. M. C. Sameera, A. Kouchi, N. Watanabe.
    Astrophysical Journal, 922, 146 (2021)

  23. "Efficient formation pathway of methyl formate: The role of OH radicals on ice dust"
    A. Ishibashi, H. Hidaka, Y. Oba, A. Kouchi, N. Watanabe.
    Astrophysical Journal Letters, 921, L13 (9pp) (2021)

  24. "Experimental and computational studies on the physico-chemical behavior of phosphine induced by reactions with H and D atoms on interstellar grains"
    T. Nguyen, Y. Oba, W. M. C. Sameera, A. Kouchi, N. Watanabe.
    Astrophysical Journal, 918, 73 (15pp) (2021)

  25. "Transmission electron microscopy study of the morphology of ices composed of H2O, CO2, and CO on refractory grains"
    A. Kouchi, M. Tsuge, T. Hama, Y. Oba, S. Okuzumi, S.-i. Sirono, M. Momose, N. Nakatani, K. Furuya, T. Shimonishi, T. Yamazaki, H. Hidaka, Y. Kimura, K.-i. Murata, K. Fujita, S. Nakatsubo, S. Tachibana, N. Watanabe.
    Astrophysical Journal, 918, 45 (20pp) (2021)


  26. "Formation of chiral CO polyhedral crystals on icy interstellar grains"
    A. Kouchi, M. Tsuge, T. Hama, H. Niinomi, N. Nakatani, T. Shimonishi, Y. Oba, Y. Kimura, S.-i. Sirono, S. Okuzumi, M. Momose, K. Furuya, N. Watanabe.
    Monthly Notices of the Royal Astronomical Society, 505, 1530-1542 (2021)

  27. "Analytical development of seamless procedures on cation-exchange chromatography and ion-pair chromatography with high-precision mass spectrometry for short-chain peptides"
    Y. Takano, Y. Oba, S. Furota, H. Naraoka, N. Ogawa, T. M. Blattmann, N. Ohkouchi
    International Journal of Mass Spectrometry, 463, 116529 (2021)


  28. "FAUST II. Discovery of a secondary outflow in IRAS 15398-3359: Variability in outflow direction during the earliest stage of star formation?"
    Y. Okoda, Y. Oya, L. Francis, D. Johnstone, S. Inutsuka, C. Ceccarelli, C. Codella, C. Chandler, N. Sakai, Y. Aikawa, F. Alves, N. Balucani, E. Bianchi, M. Bouvier, P. Caselli, E. Caux, S. Charnley, S. Choudhury,M. de Simone, F. Dulieu, A. Duran, L. Evans, C. Favre, D. Fedele, S. Feng, F. Fontani, T. Hama, T. Hanawa, E. Herbst, T. Hirota, M. Imai, A. Isella, I. Jimenez-Serra, C. Kahane, B. Lefloch, L. Loinard, A. Lopez-Sepulcre, L. T. Maud, M. J. Maureira, F. Menard, S. Mercimek, A. Miotello, G. Moellenbrock, S. Mori, N. M. Murillo, R. Nakatani, H. Nomura, Y. Oba, R. O'Donoghue, S. Ohashi, J. Ospina-Zamudio, J. Pineda, L. Podio, A. Rimola, T. Sakai, D. S. Cox, Y. Shirley, B. Svoboda, V. Taquet, L. Testi, C. Vastel, S. Viti, N. Watanabe, Y. Watanabe, A. Witzel, C. Xue, Y. Zhang, B. Zhao, S. Yamamoto
    Astrophysical Journal,910, 11(13pp) (2021)

    2020

  29. "Extraterrestrial hexamethylenetetramine in meteorites-a precursor of prebiotic chemistry in the inner solar system"
    Y. Oba, Y. Takano, H. Naraoka, Y. Furukawa, D. P. Glavin, J. P. Dworkin, S. Tachibana
    Nature Communications, 11, 6243 (2020)
    プレスリリース "太陽系形成より古い有機分子を炭素質隕石から検出～ただ古いだけじゃない！太陽系に存在する有機物生成に不可欠な分子～"（北海道大学）

    30. *本論文は "Physics.Org"など 多くの記事に掲載されました


  30. "Precometary organic matter: A hidden reservoir of water inside the snow line"
    H. Nakano, N. Hirakawa, Y. Matsubara, S. Yamashita, T. Okuchi, K. Asahina, R. Tanaka, N. Suzuki, H. Naraoka, Y. Takano, S. Tachibana, T. Hama, Y. Oba, Y. Kimura, N. Watanabe, & A. Kouchi
    Scientific Reports, 10, 7755 (2020)


  31. "FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS5"
    E. Bianchi, C. Chandler, C. Ceccarelli, C. Codella, N. Sakai, A. Lopez-Sepulcre, L. T. Maud, G. Moellenbrock, B. Svoboda, Y. Watanabe, T. Sakai, F. Menard, Y. Aikawa, F. Alves, N. Balucani, M. de Simone, F. Dulieu, A. Duran, L. Evans, C. Favre, D. Fedele, S. Feng, F. Fontani, L. Francis, T. Hama, T. Hanawa, E. Herbst, T. Hirota, M. Imai, A. Isella, I. Jimenez-Serra, D. Johnstone, C. Kahane, B. Lefloch, N. M. Murillo, R. Nakatani, H. Nomura, Y. Oba, S. Ohashi, Y. Okoda, J. Ospina-Zamudio, Y. Oya, J. Pineda, L. Podio, A. Rimola, D. S. Cox, Y. Shirley, V. Taquet, L. Testi, C. Vastel, S. Viti, N. Watanabe, A. Witzel, C. Xue, Y. Zhang, B. Zhao, & S. Yamamoto
    Monthly Notices of the Royal Astronomical Society Letters, 498, L87-L92 (2020).


  32. "UV-ray irradiation never causes amorphization of crystalline CO2: A transmission electron microscopy study"
    M. Tsuge, T. Nguyen, Y. Oba, T. Hama, A. Kouchi, and N. Watanabe
    Chemical Physics Letters, 760, 137999 (2020)


  33. "An experimental study of chemical desorption for phosphine in interstellar ice"
    T. Nguyen, Y. Oba, A. Kouchi, and N. Watanabe
    Astrophysical Journal Letters, 898, L52 (6pp) (2020)

    2019

  34. "Nucleobase synthesis in interstellar ices"
    Oba Y.,Takano Y., Naraoka H., Watanabe N. and Kouchi A.
    Nature Communications, 10, 4413 (2019)
    プレスリリース "星間分子雲における核酸塩基生成に世界で初めて成功～宇宙の極限環境で核酸の構成成分が光化学反応により生成～"(北海道大学)

    35. Daily Mail Online など，多くの記事に掲載されました


  35. "Physico-chemical behabior of hydrogen sulfide induced by reactions with H and D atoms on different types of ice surfaces at low temperature"
    Oba Y.,Tomaru T., Kouchi A. and Watanabe N.
    Astrophysical Journal, 874, 124 (8pp) (2019)

    2018
  36. "An infrared measurement of chemical desorption from interstellar ice analogues"
    Oba Y.,Tomaru T., Lamberts T., Kouchi A. and Watanabe N.
    Nature Astronomy, 2, 228-232 (2018)
    プレスリリース "宇宙に様々な種類のガスが存在する理由を解明～長年の天文学の謎解きに成功～"（北海道大学）
    academist Journalに記事が掲載されました


    37. 2017

  37. "Deuterium fractionation upon the formation of hexamethylenetetramines through photochemical reactions of interstellar ice analogs containing deuterated methanol isotopologues"
    Oba Y.,Takano Y., Naraoka H., Kouchi A. and Watanabe N.
    Astrophysical Journal, 849, 122 (9pp) (2017)

  38. "Liquid-like behavior of UV-irradiated interstellar ice analog at low temperatures"
    Tachibana S., Kouchi A., Hama T., Oba Y., Piani L., Sugawara I., Endo Y., Hidaka H., Kimura Y., Murata K., Yurimoto H, and Watanabe N.
    Science Advances, 3, eaao2538 (2017)


    39. 2016

  39. "Negative catalytic effect of water on the reactivity of hydrogen abstraction from the C-H bond of dimethyl ether by deuterium atoms through tunneling at low temperatures"
    Oba Y., Watanabe N., and Kouchi A.
    Chemical Physics Letters, 662, 14-18 (2016)
    *This article is selected as "Editors Choice".


  40. "Hydrogen-deuterium substitution in solid ethanol by surface reactions at low temperatures"
    Oba Y., Osaka K., Chigai T., Kouchi A., and Watanabe N.
    Monthly Notices of Royal Astronomical Society, 462, 689-695 (2016)


  41. "Deuterium fractionation during amino acid formation by photolysis of interstellar ice analogues containing deuterated methanol"
    Oba Y.,Takano Y., Watanabe N., and Kouchi A.
    Astrophysical Journal Letters, 827, L18 (7pp) (2016)


    42. 2015

  42. "Chiral Glycine Formation on Cold Interstellar Grains by Quantum Tunneling Hydrogen-Deuterium Substitution Reactions"
    Oba Y., Watanabe N., Osamura Y., and Kouchi A.
    Chemical Physics Letters, 634, 53-59 (2015)
    *本論文はEditors Choiceに選定されました。.
    *本論文は "The Conversation"で紹介されています。
    *本論文は "Cosmos Magagine"で紹介されています。
    プレスリリース"宇宙で最初の光学活性アミノ酸生成経路の解明"（北海道大学）


    43. 2014

  43. "Hydrogen Isotopic Substitution of Solid Methylamine through Atomic Surface Reactions at Low Temperatures: A Potential Contribution to the D/H Ratio of Methylamine in Molecular Clouds"
    Oba Y., Chigai T., Osamura Y., Watanabe N., and Kouchi A.
    Meteoritics & Planetary Science, 49, 117-132 (2014)


  44. "Reaction kinetics and isotope effect of water formation by the surface reaction of solid H2O2 with H atoms at low temperatures"
    Oba Y., Osaka K., Watanabe N., Chigai T., and Kouchi A.
    Faraday Discussions, 168, 185-204 (2014)


    45. 2012

  45. "星間分子雲での微粒子表面における水素の化学物理過程"
    渡部　直樹，香内　晃，羽馬　哲也，日高　宏，大場　康弘, 千貝　健
    表面科学, 33, 662-668 (2012)


  46. "Octanol-water partition coefficients (Kow) vs. pH for fluorescent dye tracers (fluorescein, eosin Y), and implications for hydrologic tracer tests"
    Oba Y., and Poulson S. R.
    Geochemical Journal, 46, 517-520 (2012)


  47. "Water formation through a quantum tunneling surface reaction, OH + H2, at 10 K"
    Oba Y., Watanabe N., Hama T., Kuwahata K., Hidaka H., and Kouchi A.
    The Astrophysical Journal, 749, 67(12pp) (2012)


    48. 2011

  48. "Experimental studies of surface reactions among OH radicals that yield H2O and CO2 at 40-60 K"
    Oba Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
    Physical Chemistry Chemical Physics, 13, 15792-15797 (2011)


  49. "星間分子雲における二酸化炭素生成に関する実験的研究"
    大場　康弘, 渡部　直樹, 香内　晃, 羽馬　哲也, ピロネロ　バレリオ
    地球化学, 45, 213-226 (2011)


  50. "炭素質隕石中有機化合物の安定同位体組成とその同位体分別プロセスに関する研究"
    大場　康弘
    Researches in Organic Geochemistry, 27, 103-115 (2011)


    51. 2010

  51. "Formation of carbonic acid (H2CO3) by surface reactions of non-energetic OH radicals with CO molecules at low temperatures"
    Oba Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
    The Astrophysical Journal, 722, 1598-1606 (2010)


  52. "Vertical carbon isotope change in acetate in a surface sediment from the northwestern Pacific Ocean"
    Kaneko, M., Oba Y., and Naraoka, H
    Researches in Organic Geochemistry, 26, 73-79 (2010)


  53. "Direct evidence for ammonium ion formation in ice through ultraviolet-induced acid-base reaction of NH3 with H3O+"
    Moon E.-S., Kang H., Oba Y., Watanabe N., and Kouchi A.
    The Astrophysical Journal, 713, 906-911 (2010)


  54. "Experimental study of CO2 formation by surface reactions of non-energetic OH radicals with CO molecules"
    Oba Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
    The Astrophysical Journal, 712, L174-L178 (2010)


  55. "Diel behavior of stable isotopes of dissolved oxygen and dissolved inorganic carbon in rivers over a range of trophic conditions, and in a mesocosm experiment"
    S. R. Parker, C. H. Gammons, S. R. Poulson, M. D. DeGrandpre, C. L. Weyer, M. G. Smith, J. N. Babcock, and Oba Y.
    Chemical Geology, 269, 22-32 (2010)


    56. 2009

  56. "Oxygen isotope fractionation of dissolved oxygen during abiological reduction by aqueous sulfide"
    Oba Y., and Poulson S.R.
    Chemical Geology, 268, 226-232 (2009)


  57. "Elemental and isotope behavior of macromolecular organic matter from CM chondrites during hydrous pyrolysis"
    Oba Y., and Naraoka H.
    Meteoritics and Planetary Science, 44, 943-953 (2009)


  58. "Formation of compact amorphous H2O ice by codeposition of hydrogen atoms with oxygen molecules on grain surfaces"
    Oba Y., Miyauchi N., Chigai T., Hidaka H., Watanabe N., and Kouchi A.
    The Astrophysical Journal, 701, 464-470 (2009)


  59. "Oxygen isotope fractionation of dissolved oxygen during reduction by ferrous iron"
    Oba Y., and Poulson S.R.
    Geochimica et Cosmochimica Acta, 73, 13-24 (2009)


  60. "極低温星間塵表面原子反応による水分子生成"
    大場　康弘，宮内　直弥，千貝　健，日高　宏，渡部　直樹，香内　晃
    地球化学, 43, 117-131 (2009)


    61. 2008

  61. "Carbon and hydrogen isotopic fractionation of low molecular weight organic compounds during ultraviolet degradation"
    Oba Y., and Naraoka H.
    Organic Geochemistry, 35, 501-509 (2008)


  62. "ガスクロマトグラフ/同位体比質量分析計による分子レベル安定同位体比分析法"
    力石　嘉人，大場　康弘
    Researches in Organic Geochemistry, 23/24, 99-122 (2008)


    63. 2007
  63. "Carbon and hydrogen isotope fractionation of acetic acid during degradation by ultraviolet light"
    Oba Y., and Naraoka H.
    Geochemical Journal, 41, 103-110 (2007)


    64. 2006

  64. "Site-specific carbon isotope analysis of aromatic carboxylic acids by elemental analysis-pyrolysis-isotope ratio mass spectrometry"
    Oba Y., and Naraoka H.
    Rapid Communications in Mass Spectrometry, 20, 3649-3653 (2006)


  65. "Carbon isotopic composition of acetic acid generated by hydrous pyrolysis of macromolecular organic matter from the Murchison meteorite"
    Oba Y., and Naraoka H.
    Meteoritics and Planetary Science, 41, 1175-1181 (2006)


    66. 2003

  66. "Different behavior of hydrogen isotope exchange in aqueous solutions between two PAH isomers (fluoranthene and pyrene)"
    Oba Y., and Naraoka H.
    Researches in Organic Geochemistry, 18, 29-35 (2003)

Non-refereed journal

  1. 大場　康弘

    2. "我々のルーツを星間分子に探る"
    天文月報, 115, 357-363 (2021)

  2. 大場　康弘

    3. "「いる」or「いない」どっちの証明が難しい？－金星に生命の痕跡！？"
    現代化学, 598, 34-35 (2021)

  3. 渡部　直樹，大場　康弘

    4. "なぜ宇宙空間の分子はガス上で存在できるのか？－星間塵上の化学反応によるガスの放出を実証"
    化学, 73, 12-14 (2018)

Conference Proceedings

  1. V. Pirronello, M. Accolla, T. Hama, H. Hidaka, A. Kouchi, G. Manico, Y. Oba, and N. Watanabe

    2. "Laboratory investigations of physico-chemical processes occurring in icy mantles on interstellar dust grains” Physics and Chemistry of ice 2010, pp 361-368, Hokkaido University press (2011)

  2. Y. Oba, N. Miyauchi, T. Chigai, H. Hidaka, N. Watanabe, and A. Kouchi
    "Formation of H2O ice through the surface reaction O2 + H at low temperatures: Reaction kinetics and structure of the ice”
    Physics and Chemistry of ice 2010,
    pp 369-378, Hokkaido University press (2011)


  3. A. Kouchi, N. Watanabe, H. Hidaka, N. Miyauchi, Oba Y., and T. Chigai,
    "Formation of amorphous H2O ice from the reactions of cold H atoms with solid O2 at 10K”
    Cosmic Dust-Near & Far, ASP Conference Series
    414, 338, (2009)


  4. N. Watanabe, A. Kouchi, H. Hidaka, Oba Y., and N. Miyauchi,
    "Nonenergetic reactions between atomic hydrogen and molecules on interstellar grain surfaces"
    XXVI International Conference on Photonic, Electronic and Atomic Collisions, Journal of Physics: Conference Series,
    194, 012044, (2009)

招待講演

  1. "Chemical Evolution from the Interstellar Medium to the Solar System: Insight from the Analysis of Asteroidal Materials" ISM2023,Sapporo, Japan, 10th November (2023)

  2. "Chemical evolution from molecular clouds to star-forming regions, and beyond"
    3. Chemical Processes in Solar-type Star-Forming Regions,Toulouse, France, 8th June (2023)

  3. "Detection of nucleobases in extraterrestrial materials using liquid chromatography coupled with ultra high-resolution mass spectrometry"
    4. JPGU2023,幕張メッセ, 25th May (2023)

  4. "Nucleobases in space: insights from meteorite analyses and laboratory experiments"
    5. 計算アストロバイオロジー2022,筑波大学, 11th Nov.(2022)

  5. "星間塵表面における化学反応素過程研究の最前線"
    6. 日本地球化学会第68回年会,弘前大学 (online), 7th Sep.(2021)

  6. "Recent advances in analytical techniques for the identification of specific COMs in photochemically-processed interstellar ice analogs"
    7. 43rd COSPAR Scientific Assembly, F3.5,Sydney (online), 31st Jan.(2021)

  7. "H2S, why you no solid at 10 K? -Nonthermal desorption from interstellar icy grains"
    8. JPGU 2018 Meeting, Chiba, Japan, 22nd May (2018)

  8. "Experimental studies on the surface reaction of hydrogen sulfide with deuterium atoms on amorphous solid water at 10 K"
    9. ACS Spring National Meeting, New Orleans, USA, 21st March (2018)

  9. "Formation of chiral glycine by surface reactions of normal glycine with deuterium atoms at 10 K"
    10. Astrophysical Ices in the Lab (AILab),
    Madrid, Spain, 7-8th March (2016)

  10. "Formation and deuterium fractionation of water by low-temperature surface reactions in molecular clouds"
    11. Center for Astrochemical Studies Seminar, Munich, Germany, 13th October (2015)

  11. "Formation of H2O ice on cold interstellar grains: Reaction kinetics and the structure of ice"
    12. Workshop on Ice and Water Films,Seoul, Korea, 6-8 May (2013)

  12. "Co-evolution of water and organics via surface reactions on interstellar grains"
    13. JPGU 2013 Meeting,Chiba, Japan, 22 May (2013)

  13. "Structure of H2O ice formed by surface reactions of oxygen molecules with hydrogen atoms at low temperatures"
    14. 12th International Conference on the Physics and Chemistry of Ice, Hokkaido Univ., 5-10 September, (2010)

  14. "Formation of compact amorphous water ice by surface atomic reactions at low temperatures"
    15. 2010 Western Pacific Geophysics Meeting, Taipei, Taiwan, 22-25 June, (2010)


受賞歴


  1. 第5回地球惑星科学振興西田賞 (2023) 「星間物質および太陽系物質の有機的な化学進化に関する研究」

  2. 地球化学研究協会進歩賞 (2017) 「新しい実験手法による安定同位体比を利用した炭素質隕石中の有機物と模擬星間分子の研究」

  3. 2010年度日本有機地球化学会研究奨励賞（田口賞）「炭素質隕石中有機化合物の安定同位体組成とその同位体分別プロセスに関する研究」