Profile Information
- Affiliation
- Associate Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration AgencyGraduate School of Science, Department of Chemistry, The University of Tokyo
- Degree
- Ph.D.(Mar, 1996, University of Tokyo)
- Researcher number
- 30321566
- J-GLOBAL ID
- 201501026547105146
- researchmap Member ID
- B000243484
- External link
専門は惑星科学、惑星物理学、惑星物質・物性科学、惑星探査科学。特に熱赤外カメラを用いた史上初の小惑星探査により、惑星探査に「熱撮像」の手法を世界で初めて導入に成功し、さらに「太陽系物性科学」の分野を創設。観測機器の開発による惑星探査でのその場観測とサンプルリターンによる帰還試料分析を主な研究手法とする。
主要な開発機器は、蛍光X線分光計、熱赤外カメラ、多波長熱赤外カメラである。また開発中のものはマルチターン飛行時間型質量分析計等である。地上分析においてはハイパースペクトル顕微鏡(フランスIAFとの共同)やロックインサーモグラフィ法による熱拡散率顕微鏡(石崎拓也氏と共同)による帰還試料の分析の他、将来の資料熱物性分析のための多色熱赤外顕微鏡の開発を推進中である。
◆国内外の惑星探査計画(観測機器担当)
・月探査「Lunar-A」 光学カメラLIC(Co-I)1993-2005
・火星探査「のぞみ」 HFレーダ高度計PWS/ALT(Co-I)1994-2003、可視カメラMIC(Co-I)1995-2003
・小惑星探査「はやぶさ」 蛍光エックス線分光計XRS担当(PI)1995-2010
・月周回探査「かぐや(SELENE)」 蛍光X線分光計XRS担当(PI)1998-2009
・小惑星探査「はやぶさ2」 中間赤外カメラTIR担当(PI)2010-present.、
・小惑星探査「はやぶさ2」 小型ランダーMASCOT担当(JAXAリエゾン)2010-2019
・小惑星探査「はやぶさ2」 デジタルエレキDE担当(PI)2010-present
・小惑星探査「はやぶさ2」 ハイパースペクトル顕微鏡MicrOmega担当(Co-PI)2019-present
・二重小惑星探査計画Hera 熱赤外カメラTIRI担当(PI)2020-present
・二重小惑星探査計画Hera Hera Investigation Team メンバ(招聘)2020-present
・地球近傍遭遇小惑星探査計画RAMSES 熱赤外カメラTIRI担当(PI)2025-present
◆帰還サンプルの分析(地上分析)
・JAXAキュレーションセンター(地球外物質研究グループ所属)2009-present
・ハイパースペクトル顕微鏡MicrOmega-CF(Co-PI)
・熱赤外顕微鏡(PI)
◆海外ミッション参画
・SMART-1 D-CIXS(Co-I)2000-2005
・Chandrayaan-1 C1XS(Co-I)2006-2009
・BepiColombo MIXS(Co-I)2003-present、SIXS (Co-I)2003-present
・Hera (-JP) Proejct Manager & TIRI(PI)2020-present、Investigation Team 2020-present
◆WG参画
・ESA MarcoPolo(=Hayabusa-MkII)においてX線分光、熱積外カメラ、着陸機
・月着陸機SELENE-B、SELENE-II
・月着陸SLIM(科学システム検討担当)
・火星探査MELOS(科学システム検討担当(固体惑星)、着陸探査)
・OKEANOS (科学システム検討担当、質量分析計HRMSの開発)
・月縦孔探査Uzume(科学システム検討担当、熱赤外カメラの開発)
・次世代小天体サンプルリターン理学WG(代表)
Research Interests
32Research Areas
1Research History
7-
Sep, 2006 - Present
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Oct, 2003 - Aug, 2006
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Feb, 1999 - Sep, 2003
Education
4Committee Memberships
3-
Aug, 2012 - Aug, 2013
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Aug, 2010 - Aug, 2012
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Aug, 2009 - Aug, 2010
Awards
24-
Dec, 2020
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Nov, 2020
Papers
270-
Ammonium-bearing phyllosilicate grains detected in Ryugu and Bennu samples via infrared spectroscopyNature Communications, May 6, 2026
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The Planetary Science Journal, 7(5) 114-114, May 1, 2026Abstract Aqueous alteration was one of the earliest geological processes in the solar system and significantly shaped the mineralogical diversity observed in primitive minor bodies. Carbonate minerals are reliable tracers of the physicochemical conditions during alteration processes on early planetesimals. We present a comprehensive characterization of carbonates in the returned samples of asteroids Ryugu and Bennu, performed using the MicrOmega near-infrared hyperspectral microscope. We identify two major carbonate species, dolomite (CaMg(CO 3 ) 2 ) and breunnerite ((Mg,Fe)CO 3 ), with similar relative abundances and mean elemental compositions on both asteroids, indicating analogous aqueous alteration pathways on their parent bodies. A general spatial separation of dolomite and breunnerite is observed, indicating that at size scales of 10–100 μ m, alteration conditions favored the precipitation of one species over the other. We interpret this as evidence for a spatially heterogeneous local water–rock ratio, suggesting that a high local water–rock ratio suppresses the formation of dolomite, instead favoring precipitation of breunnerites. Based on relative carbonate abundances, we conclude that chambers A (sampling the surface) and C (predominantly sampling the subsurface) of the Ryugu sample contain different mixtures of lithologies with different alteration degrees.
Misc.
541-
日本機械学会年次大会講演論文集(CD-ROM), 2019 S13211, 2019<p>This report deals with the improvement of wire-sawing performance in vacuum by applying vibration to the saw wire. The performance of wire-sawing in vacuum has been investigated for future lunar and planetary explorations. Nickel fixing abrasives adhered on a rock specimen in vacuum and the abrasives slipped on it. Consequently, the rock was hardly cut. In the prototype for a high normal load, the cutting performance was investigated both in air and vacuum. The cutting amount was linearly increased under a high normal load even in vacuum. On the other hand, it was found that the saw wire vibrated due to fluctuating tension. The vibration of a tool generally accelerates the removal rate. In the previous machine with a flexural roller guide which natural frequency is 1820 Hz, the vibration of the saw wire at a frequency of 2100 Hz was excited to improve the performance. The cutting depth was proportional to the number of strokes even under a low normal load.</p>
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6th Symposium on Solar System Materials (HAYABUSA2018), D4-18, Dec, 2018
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6th Symposium on Solar System Materials (HAYABUSA2018), D4-15, Dec, 2018
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6th Symposium on Solar System Materials (HAYABUSA2018), D4-13, Dec, 2018
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6th Symposium on Solar System Materials (HAYABUSA2018), D4-06, Dec, 2018
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6th Symposium on Solar System Materials (HAYABUSA2018), D4-04, Dec, 2018 InvitedLead authorCorresponding author
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6th Symposium on Solar System Materials (HAYABUSA2018), D3-01, Dec, 2018
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AGU Fallmeeting 2018, P54D-13, Dec, 2018
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AGU Fallmeeting 2018, P33C-3849, Dec, 2018
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AGU Fallmeeting 2018, P33C-3845, Dec, 2018
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AGU Fallmeeting 2018, P21A-09, Dec, 2018
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AGU Fallmeeting 2018, P21A-08, Dec, 2018
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AGU Fallmeeting 2018, P21A-07, Dec, 2018
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AGU Fallmeeting 2018, P21A-02, Dec, 2018
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50th Annual Division for Planetary Sciences Meeting (DPS2018), 501.04, Oct, 2018 Lead authorCorresponding author
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50th Annual Division for Planetary Sciences Meeting (DPS2018), 501.07, Oct, 2018
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50th Annual Division for Planetary Sciences Meeting (DPS2018), 501.06, Oct, 2018
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50th Annual Division for Planetary Sciences Meeting (DPS2018), 501.01, Oct, 2018
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Eurpean Planetary Science Congress, EPSC2018-526, Sep, 2018
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Eurpean Planetary Science Congress, EPSC2018-1065, Sep, 2018
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Eurpean Planetary Science Congress, EPSC2018-809, Sep, 2018
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Eurpean Planetary Science Congress, EPSC2018-330, Sep, 2018 Invited
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42th COSPAR Scientific Assembly 2018, B1.1-0045-18-nopref, Aug, 2018 InvitedLead authorCorresponding author
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THE ACTIVITIES OF SMALL BODIES EXPLORATION MISSIONS IN JAPAN AND INTERNATIONAL PARTNERS, PEX.1-0012-18-oral, Jul, 2018 Peer-reviewedInvited
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42th COSPAR Scientific Assembly 2018, B1.1-0065-18-poster, Jul, 2018
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宇宙科学技術連合講演会講演集(CD-ROM), 62nd, 2018
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Thermophysical Properties, 39th, 2018
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宇宙科学技術連合講演会講演集(CD-ROM), 62nd, 2018
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日本惑星科学会秋季講演会予稿集(Web), 2018, 2018
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日本惑星科学会秋季講演会予稿集(Web), 2018, 2018
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日本惑星科学会秋季講演会予稿集(Web), 2018, 2018
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日本地球惑星科学連合大会予稿集(Web), 2018 ROMBUNNO.PPS03‐P07 (WEB ONLY), 2018
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日本地球惑星科学連合大会予稿集(Web), 2018 ROMBUNNO.PPS03‐P10 (WEB ONLY), 2018
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宇宙科学技術連合講演会講演集(CD-ROM), 62nd ROMBUNNO.3A14, 2018
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METEORITICS & PLANETARY SCIENCE, 52 A393-A393, Aug, 2017
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Science of solar system materials examined from Hayabusa and future missions (II) (vol 69, 31, 2017)EARTH PLANETS AND SPACE, 69, Mar, 2017
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EARTH PLANETS AND SPACE, 69(1), Feb, 2017
Presentations
522Teaching Experience
2-
Apr, 2021 - PresentInorganic and Analytical Chemistry (University of Tokyo, Graduate School of Science, Department of Chemistry)
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Apr, 2011 - PresentAdvanced Analytical Chemistry IV (University of Tokyo, Graduate School of Science, Department of Chemistry)
Professional Memberships
5Research Projects
6-
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Japan Society for the Promotion of Science, Jun, 2017 - Mar, 2022
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2019
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2010 - 2012
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科学研究費助成事業 若手研究(A), 日本学術振興会, 2005 - 2007
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2002 - 2003
● 専任大学名
1-
Affiliation (university)東京大学(University of Tokyo)
● 所属する所内委員会
1-
ISAS Committee放射線安全委員会