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Variations of organic functional chemistry in carbonaceous matter from the asteroid 162173 Ryugu

Author

Listed:
  • Bradley De Gregorio

    (U.S. Naval Research Laboratory)

  • George D. Cody

    (Carnegie Institution for Science)

  • Rhonda M. Stroud

    (Arizona State University)

  • A. L. David Kilcoyne

    (Lawrence Berkeley National Laboratory)

  • Scott Sandford

    (Moffett Field)

  • Corentin Le Guillou

    (Université de Lille)

  • Larry R. Nittler

    (Arizona State University)

  • Jens Barosch

    (University of Edinburgh)

  • Hikaru Yabuta

    (Hiroshima University)

  • Zita Martins

    (Universidade de Lisboa)

  • Yoko Kebukawa

    (Tokyo Institute of Technology)

  • Taiga Okumura

    (University of Tokyo)

  • Minako Hashiguchi

    (Nagoya University)

  • Shohei Yamashita

    (High Energy Acceleratory Research Organization)

  • Yasuo Takeichi

    (High Energy Acceleratory Research Organization)

  • Yoshio Takahashi

    (University of Tokyo)

  • Daisuke Wakabayashi

    (High Energy Acceleratory Research Organization)

  • Cécile Engrand

    (Centre National de la Recherche Scientifique)

  • Laure Bejach

    (Centre National de la Recherche Scientifique)

  • Lydie Bonal

    (Université Grenoble Alpes)

  • Eric Quirico

    (Université Grenoble Alpes)

  • Laurent Remusat

    (Sorbonne Université)

  • Jean Duprat

    (Sorbonne Université)

  • Maximilien Verdier-Paoletti

    (Sorbonne Université)

  • Smail Mostefaoui

    (Sorbonne Université)

  • Mutsumi Komatsu

    (Saitama Prefectural University)

  • Jérémie Mathurin

    (Centre National de la Recherche Scientifique)

  • Alexandre Dazzi

    (Centre National de la Recherche Scientifique)

  • Ariane Deniset-Besseau

    (Centre National de la Recherche Scientifique)

  • Emmanuel Dartois

    (Centre National de la Recherche Scientifique)

  • Yusuke Tamenori

    (Tokyo Metropolitan University)

  • Hiroki Suga

    (Japan Synchrotron Radiation Research Institute)

  • Gilles Montagnac

    (University Lyon 1)

  • Kanami Kamide

    (Hiroshima University)

  • Miho Shigenaka

    (Hiroshima University)

  • Megumi Matsumoto

    (Tohoku University)

  • Yuma Enokido

    (Tohoku University)

  • Makoto Yoshikawa

    (Japan Aerospace Exploration Agency)

  • Takanao Saiki

    (Japan Aerospace Exploration Agency)

  • Satoshi Tanaka

    (Japan Aerospace Exploration Agency)

  • Fuyuto Terui

    (Kanagawa Institute of Technology)

  • Satoru Nakazawa

    (Japan Aerospace Exploration Agency)

  • Tomohiro Usui

    (Japan Aerospace Exploration Agency)

  • Masanao Abe

    (Japan Aerospace Exploration Agency)

  • Tatsuaki Okada

    (Japan Aerospace Exploration Agency)

  • Toru Yada

    (Japan Aerospace Exploration Agency)

  • Masahiro Nishimura

    (Japan Aerospace Exploration Agency)

  • Aiko Nakato

    (Japan Aerospace Exploration Agency)

  • Akiko Miyazaki

    (Japan Aerospace Exploration Agency)

  • Kasumi Yogata

    (Japan Aerospace Exploration Agency)

  • Hisayoshi Yurimoto

    (Hokkaido University)

  • Tomoki Nakamura

    (Tohoku University)

  • Takaaki Noguchi

    (Kyoto University)

  • Ryuji Okazaki

    (Kyushu University)

  • Hiroshi Naraoka

    (Kyushu University)

  • Kanako Sakamoto

    (Japan Aerospace Exploration Agency)

  • Shogo Tachibana

    (University of Tokyo)

  • Sei-ichiro Watanabe

    (Nagoya University)

  • Yuichi Tsuda

    (Japan Aerospace Exploration Agency)

Abstract

Primordial carbon delivered to the early earth by asteroids and meteorites provided a diverse source of extraterrestrial organics from pre-existing simple organic compounds, complex solar-irradiated macromolecules, and macromolecules from extended hydrothermal processing. Surface regolith collected by the Hayabusa2 spacecraft from the carbon-rich asteroid 162173 Ryugu present a unique opportunity to untangle the sources and processing history of carbonaceous matter. Here we show carbonaceous grains in Ryugu can be classified into three main populations defined by spectral shape: Highly aromatic (HA), Alkyl-Aromatic (AA), and IOM-like (IL). These carbon populations may be related to primordial chemistry, since C and N isotopic compositions vary between the three groups. Diffuse carbon is occasionally dominated by molecular carbonate preferentially associated with coarse-grained phyllosilicate minerals. Compared to related carbonaceous meteorites, the greater diversity of organic functional chemistry in Ryugu indicate the pristine condition of these asteroid samples.

Suggested Citation

  • Bradley De Gregorio & George D. Cody & Rhonda M. Stroud & A. L. David Kilcoyne & Scott Sandford & Corentin Le Guillou & Larry R. Nittler & Jens Barosch & Hikaru Yabuta & Zita Martins & Yoko Kebukawa &, 2024. "Variations of organic functional chemistry in carbonaceous matter from the asteroid 162173 Ryugu," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51731-w
    DOI: 10.1038/s41467-024-51731-w
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