Rchr
J-GLOBAL ID：201301054869916564
Update date: Nov. 20, 2024
YASUHIRO OBA
オオバ ヤスヒロ | YASUHIRO OBA
Affiliation and department：
Homepage URL (1)：
http://www.lowtem.hokudai.ac.jp/astro/oba/index.html
Research field (1)：
Space and planetary science
Research theme for competitive and other funds (17)：
- 2023 - 2025 Searching for "proto-nucleobases" in extraterrestrial materials and the elucidation of their formation mechanism
- 2021 - 2025 原始地球上での核酸合成に関する新展開:地球外からの材料供給の可能性に迫る
- 2021 - 2023 On the role of hexamethylenetetramine through the molecular evolution from molecular clouds to the solar system
- 2021 - 2023 Search for unknown processes on molecular evolution in space: photochemical reactions induced by visible light
- 2017 - 2022 Chemical evolution on cosmic dust: approach from elementary processes
- 2017 - 2021 星間分子から隕石有機物へ:重水素存在度を指標とした分子進化プロセス解明
- 2017 - 2018 星間分子雲初期に起こるケイ酸塩星間塵表面での分子進化
- 2016 - 2018 光化学反応による星間分子の重水素濃集度の変化
- 2012 - 2017 Mechanisms of formation and isotope fractionation of interstellar molecules on cosmic dust
- 2014 - 2017 星間分子雲における硫黄の化学進化
- 2013 - 2016 Development of ultrahigh vacuum (UHV) transmission electron microscope for in-situ observation of ice
- 2014 - 2016 星間塵表面反応による有機分子の重水素濃集:炭素鎖伸長による濃集度の変化
- 2012 - 2014 Deuterium fractionation of amino acids by low-temperature atomic reactions on grain surfaces in molecular clouds
- 2012 - 2014 星間分子雲における極低温表面原子反応によるアミノ酸の重水素農集機構の解明
- 2009 - 2011 極低温星間塵表面原子反応によるアミノ酸の生成機構
- 2005 - 2006 地球外有機分子の多次元同位体組成解析による化学進化メカニズムの解明
- 星間塵表面原子反応によるアミノ酸前駆物質の生成機構
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Papers (85)：
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Atsuki Ishibashi, Germán Molpeceres, Hiroshi Hidaka, Yasuhiro Oba, Thanja Lamberts, Naoki Watanabe. Proposed Importance of HOCO Chemistry: Inefficient Formation of CO2 from CO and OH Reactions on Ice Dust. The Astrophysical Journal. 2024
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Yoshinori Takano, Hiroshi Naraoka, Jason P. Dworkin, Toshiki Koga, Kazunori Sasaki, Hajime Sato, Yasuhiro Oba, Nanako O. Ogawa, Toshihiro Yoshimura, Kenji Hamase, et al. Primordial aqueous alteration recorded in water-soluble organic molecules from the carbonaceous asteroid (162173) Ryugu. Nature Communications. 2024. 15. 1
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Layal Chahine, Cecilia Ceccarelli, Marta De Simone, Claire J Chandler, Claudio Codella, Linda Podio, Ana López-Sepulcre, Nami Sakai, Laurent Loinard, Mathilde Bouvier, et al. Multiple chemical tracers finally unveil the intricate NGC 1333 IRAS 4A outflow system. FAUST XVI. Monthly Notices of the Royal Astronomical Society. 2024
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Aogu Furusho, Chiharu Ishii, Takeyuki Akita, Mai Oyaide, Masashi Mita, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Yasuhiro Oba, Toshiki Koga, et al. Enantioselective three-dimensional high-performance liquid chromatographic determination of amino acids in the Hayabusa2 returned samples from the asteroid Ryugu. Journal of Chromatography Open. 2024. 100134-100134
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Atsuki Ishibashi, Hiroshi Hidaka, W. M. C. Sameera, Yasuhiro Oba, Naoki Watanabe. Determination of the Branching Ratio of CH3OH + OH Reaction on Water Ice Surface at 10 K. The Astrophysical Journal. 2024
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MISC (13)：
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Atsuki Ishibashi, Yasuhiro Oba, Tetsuya Hama, Akira Kouchi, Naoki Watanabe. Inversion of surface voltage on H2O films affecting sublimation of CO underlayer. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2019. 258
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香内晃, 木村勇気, 大場康弘, 羽馬哲也, 渡部直樹, 橘省吾, 土山明, 延寿里美, 大坪貴文. アモルファスMg2SiO4微粒子を覆った氷の光化学反応によるフォルステライト結晶の生成. 日本地球惑星科学連合大会予稿集(Web). 2019. 2019
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Yukiko Yarnall, Hiroshi Hidaka, Yasuhiro Oba, Tetsuya Hama, Akira Kouchi, Naoki Watanabe. Reaction experiments on H exposure of solid methanol at low temperatures. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2018. 255
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Piani Laurette, 橘 省吾, 羽馬 哲也, 菅原 いよ, 大場 康弘, 田中 秀和, 木村 勇気, 三宅 亮, 松 野 淳也, 土山 明, et al. 低温光化学反応による分子雲での有機物形成・進化. 日本地球惑星科学連合2016年大会. 2016
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Osaka K., Oba Y., Kouchi A., Watanabe N. 27aCH-5 H-D substitution of solid ethanol by quantum tunneling at low temperatures. Meeting abstracts of the Physical Society of Japan. 2014. 69. 1. 173-173
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Lectures and oral presentations (34)：
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Recent advances in analytical techniques for the identification of specific COMs in photochemically-processed interstellar ice analogs
(43rd COSPAR Scientific Assembly 2021)
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H2S, why you no solid at 10 K? -Nonthermal desorption from interstellar icy grains
(JPGU 2018 Meeting 2018)
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Experimental studies on the surface reaction of hydrogen sulfide with deuterium atoms on amorphous solid water at 10 K
(ACS Spring National Meeting 2018)
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Formation of chiral glycine by surface reactions of normal glycine with deuterium atoms at 10 K
(Astrophysical Ices in the Lab (AILab) 2016)
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Formation of H2O ice on cold interstellar grains: Reaction kinetics and the structure of ice
(Center for Astrochemical Studies Seminar 2015)
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Education (3)：
- 2004 - 2007 Okayama University The Graduate School of Natural Science and Technology
- 2002 - 2004 Tokyo Metropolitan University Graduate School of Science
- 1997 - 2001 University of Tsukuba First Cluster of Colleges,College of Natural Sciences
Professional career (1)：
Work history (6)：
Awards (3)：
- 2023/05 - Japan Geoscience Union The 5th Nisida Prize Organic astrochemical evolution in interstellar environment and the solar system
- 2017/12 - 地球化学研究協会 地球化学研究協会学術賞「進歩賞」 新しい実験手法による安定同位体比を使用した炭素質隕石中の有機物と模擬星間分子の研究
- 2010 - 日本有機地球化学会 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
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