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Material Science of the Solar System in a New Era: Formation and Evolution of Hydrous Asteroids at Different Scales

Research Project

Project/Area Number 20H00188
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionTohoku University

Principal Investigator

Nakamura Tomoki  東北大学, 理学研究科, 教授 (20260721)

Co-Investigator(Kenkyū-buntansha) 牛久保 孝行  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 主任研究員 (10722837)
上椙 真之  公益財団法人高輝度光科学研究センター, 分光推進室, 主幹研究員 (20426521)
玄田 英典  東京工業大学, 地球生命研究所, 教授 (90456260)
臼井 文彦  神戸大学, 理学研究科, 特命助教 (30720669)
三宅 亮  京都大学, 理学研究科, 准教授 (10324609)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥46,280,000 (Direct Cost: ¥35,600,000、Indirect Cost: ¥10,680,000)
Fiscal Year 2023: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2022: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2020: ¥27,950,000 (Direct Cost: ¥21,500,000、Indirect Cost: ¥6,450,000)
Keywords小惑星 / Ryugu / 炭素質隕石 / Hayabusa2 / C型小惑星 / はやぶさ2 / 小惑星リュウグウ / リュウグウ / 含水小惑星 / 炭素質コンドライト
Outline of Research at the Start

本研究では、水と共存し、水の性質変化に敏感な含水鉱物に着目し、その特性(鉱物種、含水量、化学組成、水素、酸素および希ガス同位体組成、反射スペクトル)が天体進化に伴いどのように変遷したか、系統的変化とメカニズムをミクロンスケールから天体スケールで理解することを目的とする。このようにして得られた含水鉱物の特性から、C型、D型小惑星の形成位置の推定、加熱脱水の原因究明、地球の水の起源への制約、といった大問題に取り組みたい。

Outline of Final Research Achievements

Material analyses of asteroid samples recovered by the asteroid probe Hayabusa2 and similar CI carbonaceous meteorites using synchrotron radiation and electron microscopes were conducted to elucidate the formation position of hydrous asteroids, their formation environment, and chemical evolution by water quality metamorphism in the interior of the bodies after formation. The physical properties of the samples were also measured, and the impact destruction process of hydrous asteroids was successfully estimated. The results were compiled and published in many scientific journals including Science.

Academic Significance and Societal Importance of the Research Achievements

小惑星からのリターンサンプルを解析し,C型小惑星の起源や形成進化のプロセスを明らかにした.リュウグウのような小惑星が地球に生命の基礎物質や水をもたらした可能性を高めた.また,日本の探査機が持ち帰った小惑星サンプルを詳細に分析し,科学的価値が高いことを示せたのは社会的意義が高いと考えられる.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (28 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (6 results) Journal Article (15 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 14 results,  Open Access: 12 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Funded Workshop (1 results)

  • [Int'l Joint Research] NASA/JSC(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] パリ自然史博物館(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] フランクフルト大学(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] パリ自然史博物館/パリ大学(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] NASA JSC(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ゲーテ大学(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Microstructural and chemical features of impact melts on Ryugu particle surfaces: Records of interplanetary dust hit on asteroid Ryugu2024

    • Author(s)
      Matsumoto M. et al. (11/39)
    • Journal Title

      Science Advances

      Volume: 10 Issue: 3 Pages: 1-18

    • DOI

      10.1126/sciadv.adi7203

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantification of bulk elemental composition for C‐type asteroid Ryugu samples with nondestructive elemental analysis using muon beam2024

    • Author(s)
      Ninomiya K., Osawa T., Terada K., Wada T., Nagasawa S., Chiu I., Nakamura T., Takahashi T., Miyake Y., Kubo M. K., ...Tachibana S., et al
    • Journal Title

      Meteoritics and Planetary Science

      Volume: ー Issue: 8 Pages: 1-14

    • DOI

      10.1111/maps.14135

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlated IR-SEM-TEM studies of three different grains from Ryugu: From the initial material to post-accretional processes2024

    • Author(s)
      Aleon-Toppani Alice、Brunetto Rosario、Dionnet Zelia、Rubino Stefano、Baklouti Donia、Brisset Fran?ois、Vallet Maxime、Heripre Eva、Nakamura Tomoki et al.
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 371 Pages: 1-30

    • DOI

      10.1016/j.gca.2024.02.006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reassigning CI chondrite parent bodies based on reflectance spectroscopy of samples from carbonaceous asteroid Ryugu and meteorites2023

    • Author(s)
      K. Amano,他48名(15番目)
    • Journal Title

      Science Advances

      Volume: 9 Issue: 49

    • DOI

      10.1126/sciadv.adi3789

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Space weathering acts strongly on the uppermost surface of Ryugu2023

    • Author(s)
      Matsuoka M., Kagawa E., Amano K., Nakamura T., Tatsumi E., ...Tachibana S., et al
    • Journal Title

      Communications Earth and Environment

      Volume: 4 Issue: 1

    • DOI

      10.1038/s43247-023-00991-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of Nondestructive Elemental Analysis System for Hayabusa2 Samples Using Muonic X-rays2023

    • Author(s)
      Osawa Takahito、Nagasawa Shunsaku、Ninomiya Kazuhiko、Takahashi Tadayuki、Nakamura Tomoki et al.
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 7 Issue: 4 Pages: 699-711

    • DOI

      10.1021/acsearthspacechem.2c00303

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Three‐dimensional multiscale assembly of phyllosilicates, organics, and carbonates in small Ryugu fragments2023

    • Author(s)
      Dionnet Z., Rubino S., Aleon-Toppani A., Brunetto R., Tsuchiyama A., ...Tachibana S., et al
    • Journal Title

      Meteoritics and Planetary Science

      Volume: ー Issue: 8 Pages: 171-171

    • DOI

      10.1111/maps.14068

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Visualization of nanoscale magnetic domain states in the asteroid Ryugu2023

    • Author(s)
      Kimura, Yuki; Kato, Takeharu; Tanigaki, Toshiaki and 33 more (Yabuta, H.は27番目)
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 14096-14096

    • DOI

      10.1038/s41598-023-41242-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples2023

    • Author(s)
      Nakamura T.、Matsumoto M.、Amano K.、Enokido Y.、Zolensky M. E.、Mikouchi T.、Genda H.、Tanaka S.、Zolotov M. Y.、Kurosawa K. .. Yabuta H. ... et al.
    • Journal Title

      Science

      Volume: 379 Issue: 6634 Pages: 8671-8671

    • DOI

      10.1126/science.abn8671

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chondrule-like objects and Ca-Al-rich inclusions in Ryugu may potentially be the oldest Solar System materials2023

    • Author(s)
      Nakashima Daisuke、Nakamura Tomoki、Zhang Mingming、et al.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41467-023-36268-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth2022

    • Author(s)
      Tachibana S.、Abe M. et al.
    • Journal Title

      Science

      Volume: 375 Issue: 6584 Pages: 1011-1016

    • DOI

      10.1126/science.abj8624

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] UV-visible-infrared spectral survey of Antarctic carbonaceous chondrite chips2021

    • Author(s)
      Hiroi T.、Kaiden H.、Imae N.、Misawa K.、Kojima H.、Sasaki S.、Matsuoka M.、Nakamura T.、Bish D.L.、Ohtsuka K.、Howard K.T.、Robertson K.R.、Milliken R.E.
    • Journal Title

      Polar Science

      Volume: 29 Pages: 100723-100723

    • DOI

      10.1016/j.polar.2021.100723

    • Related Report
      2020 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Collisional history of Ryugu’s parent body from bright surface boulders2021

    • Author(s)
      Tatsumi E.、Sugimoto C.、Riu L.、... Yabuta, H. ... et al. (75人中67番目)
    • Journal Title

      Nature Astronomy

      Volume: 5 Issue: 1 Pages: 39-45

    • DOI

      10.1038/s41550-020-1179-z

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Combining IR and X‐ray microtomography data sets: Application to Itokawa particles and to Paris meteorite2020

    • Author(s)
      Dionnet Zelia、Brunetto Rosario、Al?on‐Toppani Alice、Rubino Stefano、Baklouti Donia、Borondics Ferenc、Buellet Anne‐C?cile、Djouadi Zahia、King Andrew、Nakamura Tomoki、Rotundi Alessandra、Sandt Christophe、Troadec David、Tsuchiyama Akira
    • Journal Title

      Meteoritics & Planetary Science

      Volume: 55 Issue: 7 Pages: 1645-1664

    • DOI

      10.1111/maps.13538

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characterizing irradiated surfaces using IR spectroscopy2020

    • Author(s)
      Brunetto R.、Lantz C.、Nakamura T.、Baklouti D.、Le Pivert-Jolivet T.、Kobayashi S.、Borondics F.
    • Journal Title

      Icarus

      Volume: 345 Pages: 113722-113722

    • DOI

      10.1016/j.icarus.2020.113722

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] リュウグウサンプル表面の微小クレータ分布2023

    • Author(s)
      中村智樹 他
    • Organizer
      日本惑星科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] How do returned asteroid samples compare with meteorites?2023

    • Author(s)
      Tomoki Nakamura
    • Organizer
      ISSI Early Solar System Workshop Bern
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of “stone” samples from C-type asteroid Ryugu2022

    • Author(s)
      Nakamura T. et al.
    • Organizer
      Meteoritical Society Annual Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Aqueous alteration of Cb-type asteroid Ryugu2022

    • Author(s)
      中村智樹 他
    • Organizer
      日本地球惑星科学連合
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Analysis of samples from asteroid Ryugu returned by Hayabusa22022

    • Author(s)
      Nakamura T. et al.
    • Organizer
      COSPAR
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Early history of Ryugu’s parent asteroid: evidence from return sample2022

    • Author(s)
      Nakamura T. et al.
    • Organizer
      Lunar Planetary Science conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] Hayabusa2 return sample analysis science meeting -Scientific achievement by the Stone team -2022

    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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