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-
85th Ann. Meeting Meteoritical Society, 6175, Aug, 2022
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85th Ann. Meeting Meteoritical Society, 6188, Aug, 2022
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JpGU Meeting 2022, PPS03-01, May, 2022 Invited
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JpGU Meeting 2022, PPS03-07, May, 2022
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JPGU Meeting 2022, PPS03-06, May, 2022
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JpGU Meeting 2022, PPS03-08, May, 2022
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JpGU Meeting 2022, PCG18-P10, May, 2022
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JpGU Meeting 2022, PPS03-P06, May, 2022 Last author
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JpGU Meeting 2022, PCG18-XX, May, 2022
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JpGU Meeting 2022, PPS03-03, May, 2022 Last authorCorresponding author
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Investigations of Dynamics of Binary Asteroid System and Non-Gravitational Effects with Hera MissionJpGU Meeting 2022, PPS03-23, May, 2022
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JpGU Meeting 2022, PPS04-21, May, 2022 Invited
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JPGU2022, PPS03-09, May, 2022
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53rd Lunar and Planetary Science Conference, 1326, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1767, Mar, 2022 Corresponding author
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53rd Lunar and Planetary Science Conference, 1831, Mar, 2022
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53rd Lunar and Planetary Science Conference, 2371, Mar, 2022
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53rd Lunar and Planetary Science Conference, 2088, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1319, Mar, 2022 Lead authorCorresponding author
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53rd Lunar and Planetary Science Conference,, 1183, Mar, 2022 Corresponding author
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53rd Lunar and Planetary Science Conference,, 1731, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1753, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1495, Mar, 2022
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53rd Lunar and Planetary Science Conference, 2411, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1828, Mar, 2022
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53rd Lunar and Planetary Science Conference, 1400, Mar, 2022
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53rd Lunar and Planetary Science Conference, 2017, Mar, 2022
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第22回宇宙科学シンポジウム, Jan, 2022 Lead authorCorresponding author
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International SpaceWire & SpaceFibre Conference (ISC), 1-4, 2022 Peer-reviewedInvited
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44th COSPAR Scientific Assembly, B1.1-0015-22, 2022
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精密工学会誌(Web), 88(2), 2022
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52nd Lunar and Planetary Science Conference 2021, 2008, Mar, 2021
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52nd Lunar and Planetary Science Conference 2021, 1832, Mar, 2021
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52nd Lunar and Planetary Science Conference 2021, 1769, Mar, 2021
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52nd Lunar and Planetary Science Conference 2021, 2184, Mar, 2021 Last authorCorresponding author
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52nd Lunar and Planetary Science Conference 2021, 1449, Mar, 2021 Lead authorCorresponding author
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COSPAR2021, B1.2 0004-21, Feb, 2021 Lead authorCorresponding author
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日本地球惑星科学連合大会予稿集(Web), 2021, 2021
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Thermophysical Properties (CD-ROM), 42nd, 2021
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