On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective

NAKAMURA, Eizo; KOBAYASHI, Katsura; TANAKA, Ryoji; KUNIHIRO, Tak; KITAGAWA, Hiroshi; POTISZIL, Christian; OTA, Tsutomu; SAKAGUCHI, Chie; YAMANAKA, Masahiro; RATNAYAKE, Dilan M.; TRIPATHI, Havishk; KUMAR, Rahul; AVRAMESCU, Maya-Liliana; TSUCHIDA, Hidehisa; YACHI, Yusuke; MIURA, Hitoshi; ABE, Masanao; FUKAI, Ryota; FURUYA, Shizuho; HATAKEDA, Kentaro; HAYASHI, Tasuku; HITOMI, Yuya; KUMAGAI, Kazuya; MIYAZAKI, Akiko; NAKATO, Aiko; NISHIMURA, Masahiro; OKADA, Tatsuaki; SOEJIMA, Hiromichi; SUGITA, Seiji; SUZUKI, Ayako; USUI, Tomohiro; YADA, Toru; YAMAMOTO, Daiki; YOGATA, Kasumi; YOSHITAKE, Miwa; ARAKAWA, Masahiko; FUJII, Atsushi; HAYAKAWA, Masahiko; HIRATA, Naoyuki; HIRATA, Naru; HONDA, Rie; HONDA, Chikatoshi; HOSODA, Satoshi; IIJIMA, Yu-ichi; IKEDA, Hitoshi; ISHIGURO, Masateru; ISHIHARA, Yoshiaki; IWATA, Takahiro; KAWAHARA, Kosuke; KIKUCHI, Shota; KITAZATO, Kohei; MATSUMOTO, Koji; MATSUOKA, Moe; MICHIKAMI, Tatsuhiro; MIMASU, Yuya; MIURA, Akira; MOROTA, Tomokatsu; NAKAZAWA, Satoru; NAMIKI, Noriyuki; NODA, Hirotomo; NOGUCHI, Rina; OGAWA, Naoko; OGAWA, Kazunori; OKAMOTO, Chisato; ONO, Go; OZAKI, Masanobu; SAIKI, Takanao; SAKATANI, Naoya; SAWADA, Hirotaka; SENSHU, Hiroki; SHIMAKI, Yuri; SHIRAI, Kei; TAKEI, Yuto; TAKEUCHI, Hiroshi; TANAKA, Satoshi; TATSUMI, Eri; TERUI, Fuyuto; TSUKIZAKI, Ryudo; WADA, Koji; YAMADA, Manabu; YAMADA, Tetsuya; YAMAMOTO, Yukio; YANO, Hajime; YOKOTA, Yasuhiro; YOSHIHARA, Keisuke; YOSHIKAWA, Makoto; YOSHIKAWA, Kent; FUJIMOTO, Masaki; WATANABE, Sei-ichiro; TSUDA, Yuichi

doi:10.2183/pjab.98.015

Permalink : https://ousar.lib.okayama-u.ac.jp/63757

ID	63757
FullText URL	fulltext20220708-1.pdf 12.2 MB
Author	NAKAMURA, Eizo The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University KOBAYASHI, Katsura The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University TANAKA, Ryoji The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University KUNIHIRO, Tak The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University KITAGAWA, Hiroshi The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University POTISZIL, Christian The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University OTA, Tsutomu The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University SAKAGUCHI, Chie The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University YAMANAKA, Masahiro The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University RATNAYAKE, Dilan M. The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University TRIPATHI, Havishk The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University KUMAR, Rahul The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University AVRAMESCU, Maya-Liliana The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University TSUCHIDA, Hidehisa The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University YACHI, Yusuke The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University MIURA, Hitoshi Department of Information and Basic Science, Nagoya City University ABE, Masanao The Graduate University for Advanced Studies (SOKENDAI) FUKAI, Ryota Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency FURUYA, Shizuho Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency HATAKEDA, Kentaro Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency HAYASHI, Tasuku Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency HITOMI, Yuya Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency KUMAGAI, Kazuya Marine Works Japan, Ltd. MIYAZAKI, Akiko Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency NAKATO, Aiko Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency NISHIMURA, Masahiro Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency OKADA, Tatsuaki Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency SOEJIMA, Hiromichi Marine Works Japan, Ltd. SUGITA, Seiji Graduate School of Science, The University of Tokyo SUZUKI, Ayako Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency USUI, Tomohiro Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YADA, Toru Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YAMAMOTO, Daiki Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YOGATA, Kasumi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YOSHITAKE, Miwa Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency ARAKAWA, Masahiko Graduate School of Science, Kobe University FUJII, Atsushi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency HAYAKAWA, Masahiko Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency HIRATA, Naoyuki Graduate School of Science, Kobe University HIRATA, Naru Faculty of Computer Science and Engineering, The University of Aizu HONDA, Rie Faculty of Science and Technology, Kochi University HONDA, Chikatoshi Faculty of Computer Science and Engineering, The University of Aizu HOSODA, Satoshi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency IIJIMA, Yu-ichi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency IKEDA, Hitoshi Research and Development Directorate, JAXA ISHIGURO, Masateru Department of Physics and Astronomy, Seoul National University ISHIHARA, Yoshiaki Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency IWATA, Takahiro Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency KAWAHARA, Kosuke Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency KIKUCHI, Shota Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency KITAZATO, Kohei Faculty of Computer Science and Engineering, The University of Aizu MATSUMOTO, Koji National Astronomical Observatory of Japan MATSUOKA, Moe Observatoire de Paris MICHIKAMI, Tatsuhiro Faculty of Engineering, Kindai University MIMASU, Yuya Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency MIURA, Akira Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency MOROTA, Tomokatsu Graduate School of Environmental Studies, Nagoya University NAKAZAWA, Satoru Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency NAMIKI, Noriyuki National Astronomical Observatory of Japan NODA, Hirotomo National Astronomical Observatory of Japan NOGUCHI, Rina Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency OGAWA, Naoko Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency OGAWA, Kazunori Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency OKAMOTO, Chisato Graduate School of Science, Kobe University ONO, Go Research and Development Directorate, JAXA OZAKI, Masanobu Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency SAIKI, Takanao Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency SAKATANI, Naoya College of Science, Rikkyo University SAWADA, Hirotaka Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency SENSHU, Hiroki Planetary Exploration Research Center (PERC), Chiba Institute of Technology SHIMAKI, Yuri Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency SHIRAI, Kei Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency TAKEI, Yuto Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency TAKEUCHI, Hiroshi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency TANAKA, Satoshi The Graduate University for Advanced Studies (SOKENDAI) TATSUMI, Eri Graduate School of Science, The University of Tokyo TERUI, Fuyuto Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency TSUKIZAKI, Ryudo Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency WADA, Koji Planetary Exploration Research Center (PERC), Chiba Institute of Technology YAMADA, Manabu Planetary Exploration Research Center (PERC), Chiba Institute of Technology YAMADA, Tetsuya Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YAMAMOTO, Yukio Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YANO, Hajime Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YOKOTA, Yasuhiro Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YOSHIHARA, Keisuke Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency YOSHIKAWA, Makoto The Graduate University for Advanced Studies (SOKENDAI) YOSHIKAWA, Kent Research and Development Directorate, JAXA FUJIMOTO, Masaki Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency WATANABE, Sei-ichiro Graduate School of Environmental Studies, Nagoya University TSUDA, Yuichi Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Abstract	Presented here are the observations and interpretations from a comprehensive analysis of 16 representative particles returned from the C-type asteroid Ryugu by the Hayabusa2 mission. On average Ryugu particles consist of 50% phyllosilicate matrix, 41% porosity and 9% minor phases, including organic matter. The abundances of 70 elements from the particles are in close agreement with those of CI chondrites. Bulk Ryugu particles show higher δ18O, Δ17O, and ε54Cr values than CI chondrites. As such, Ryugu sampled the most primitive and least-thermally processed protosolar nebula reservoirs. Such a finding is consistent with multi-scale H-C-N isotopic compositions that are compatible with an origin for Ryugu organic matter within both the protosolar nebula and the interstellar medium. The analytical data obtained here, suggests that complex soluble organic matter formed during aqueous alteration on the Ryugu progenitor planetesimal (several 10’s of km), <2.6 Myr after CAI formation. Subsequently, the Ryugu progenitor planetesimal was fragmented and evolved into the current asteroid Ryugu through sublimation.
Published Date	2022-06-10
Publication Title	Proceedings of the Japan Academy, Series B
Volume	volume98
Issue	issue6
Publisher	Japan Academy
Start Page	227
End Page	282
ISSN	0386-2208
NCID	AA00785485
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	©2022 The Author(s).
File Version	author
PubMed ID	35691845
DOI	10.2183/pjab.98.015
Web of Science KeyUT	000812946100001
Related Url	isVersionOf https://doi.org/10.2183/pjab.98.015