IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v12y2021i1d10.1038_s41467-021-26071-8.html
   My bibliography  Save this article

Spectrally blue hydrated parent body of asteroid (162173) Ryugu

Author

Listed:
  • Eri Tatsumi

    (Instituto de Astrofísica de Canarias (IAC)
    University of La Laguna
    The University of Tokyo)

  • Naoya Sakatani

    (Rikkyo University)

  • Lucie Riu

    (Japan Aerospace Exploration Agency (JAXA))

  • Moe Matsuoka

    (Japan Aerospace Exploration Agency (JAXA))

  • Rie Honda

    (Kochi University, Kochi)

  • Tomokatsu Morota

    (The University of Tokyo)

  • Shingo Kameda

    (Rikkyo University)

  • Tomoki Nakamura

    (Tohoku University)

  • Michael Zolensky

    (NASA Johnson Space Center)

  • Rosario Brunetto

    (Université Paris-Saclay, CNRS, Institut d’Astrophysique Spatiale)

  • Takahiro Hiroi

    (Brown University)

  • Sho Sasaki

    (Osaka University, Toyonaka)

  • Sei’ichiro Watanabe

    (Nagoya University)

  • Satoshi Tanaka

    (Japan Aerospace Exploration Agency (JAXA)
    SOKENDAI (The Graduate University for Advanced Studies))

  • Jun Takita

    (Hokkaido Kitami Hokuto High School, Kitami)

  • Cédric Pilorget

    (Université Paris-Saclay, CNRS, Institut d’Astrophysique Spatiale)

  • Julia León

    (Instituto de Astrofísica de Canarias (IAC)
    University of La Laguna)

  • Marcel Popescu

    (Astronomical Institute of the Romanian Academy)

  • Juan Luis Rizos

    (Instituto de Astrofísica de Canarias (IAC)
    University of La Laguna)

  • Javier Licandro

    (Instituto de Astrofísica de Canarias (IAC)
    University of La Laguna)

  • Ernesto Palomba

    (NAF, Instituto di Astrofisica e Planetologia Spaziali)

  • Deborah Domingue

    (Planetary Science Institute)

  • Faith Vilas

    (Planetary Science Institute)

  • Humberto Campins

    (University of Central Florida)

  • Yuichiro Cho

    (The University of Tokyo)

  • Kazuo Yoshioka

    (The University of Tokyo)

  • Hirotaka Sawada

    (Japan Aerospace Exploration Agency (JAXA))

  • Yasuhiro Yokota

    (Japan Aerospace Exploration Agency (JAXA))

  • Masahiko Hayakawa

    (Japan Aerospace Exploration Agency (JAXA))

  • Manabu Yamada

    (Chiba Institute of Technology)

  • Toru Kouyama

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Hidehiko Suzuki

    (Meiji University)

  • Chikatoshi Honda

    (The University of Aizu, Aizu-Wakamatsu)

  • Kazunori Ogawa

    (Japan Aerospace Exploration Agency (JAXA))

  • Kohei Kitazato

    (The University of Aizu, Aizu-Wakamatsu)

  • Naru Hirata

    (The University of Aizu, Aizu-Wakamatsu)

  • Naoyuki Hirata

    (Kobe University, Kobe)

  • Yuichi Tsuda

    (Japan Aerospace Exploration Agency (JAXA)
    SOKENDAI (The Graduate University for Advanced Studies))

  • Makoto Yoshikawa

    (Japan Aerospace Exploration Agency (JAXA)
    SOKENDAI (The Graduate University for Advanced Studies))

  • Takanao Saiki

    (Japan Aerospace Exploration Agency (JAXA))

  • Fuyuto Terui

    (Japan Aerospace Exploration Agency (JAXA))

  • Satoru Nakazawa

    (Japan Aerospace Exploration Agency (JAXA))

  • Yuto Takei

    (Japan Aerospace Exploration Agency (JAXA))

  • Hiroshi Takeuchi

    (Japan Aerospace Exploration Agency (JAXA)
    SOKENDAI (The Graduate University for Advanced Studies))

  • Yukio Yamamoto

    (Japan Aerospace Exploration Agency (JAXA)
    SOKENDAI (The Graduate University for Advanced Studies))

  • Tatsuaki Okada

    (The University of Tokyo
    Japan Aerospace Exploration Agency (JAXA))

  • Yuri Shimaki

    (Japan Aerospace Exploration Agency (JAXA))

  • Kei Shirai

    (Kobe University, Kobe)

  • Seiji Sugita

    (The University of Tokyo
    Chiba Institute of Technology)

Abstract

Ryugu is a carbonaceous rubble-pile asteroid visited by the Hayabusa2 spacecraft. Small rubble pile asteroids record the thermal evolution of their much larger parent bodies. However, recent space weathering and/or solar heating create ambiguities between the uppermost layer observable by remote-sensing and the pristine material from the parent body. Hayabusa2 remote-sensing observations find that on the asteroid (162173) Ryugu both north and south pole regions preserve the material least processed by space weathering, which is spectrally blue carbonaceous chondritic material with a 0–3% deep 0.7-µm band absorption, indicative of Fe-bearing phyllosilicates. Here we report that spectrally blue Ryugu’s parent body experienced intensive aqueous alteration and subsequent thermal metamorphism at 570–670 K (300–400 °C), suggesting that Ryugu’s parent body was heated by radioactive decay of short-lived radionuclides possibly because of its early formation 2–2.5 Ma. The samples being brought to Earth by Hayabusa2 will give us our first insights into this epoch in solar system history.

Suggested Citation

  • Eri Tatsumi & Naoya Sakatani & Lucie Riu & Moe Matsuoka & Rie Honda & Tomokatsu Morota & Shingo Kameda & Tomoki Nakamura & Michael Zolensky & Rosario Brunetto & Takahiro Hiroi & Sho Sasaki & Sei’ichir, 2021. "Spectrally blue hydrated parent body of asteroid (162173) Ryugu," Nature Communications, Nature, vol. 12(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26071-8
    DOI: 10.1038/s41467-021-26071-8
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-021-26071-8
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-021-26071-8?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26071-8. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.