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

Eizo Nakamura; Katsura Kobayashi; Ryoji Tanaka; Tak Kunihiro; Hiroshi Kitagawa; Christian Potiszil; Tsutomu Ota; Chie Sakaguchi; Masahiro Yamanaka; Dilan M. Ratnayake; Havishk Tripathi; Rahul Kumar; Maya Liliana Avramescu; Hidehisa Tsuchida; Yuusuke Yachi; Hitoshi Miura; Masanao Abe; Ryota Fukai; Shizuho Furuya; Kentaro Hatakeda; Tasuku Hayashi; Yuya Hitomi; Kazuya Kumagai; Akiko Miyazaki; Aiko Nakato; Masahiro Nishimura; Tatsuaki Okada; Hiromichi Soejima; Seiji Sugita; Ayako Suzuki; Tomohiro Usui; Toru Yada; Daiki Yamamoto; Kasumi Yogata; Miwa Yoshitake; Masahiko Arakawa; Atsushi Fujii; Masahiko Hayakawa; Naoyuki Hirata; Naru Hirata; Rie Honda; Chikatoshi Honda; Satoshi Hosoda; Yu Ichi Iijima; Hitoshi Ikeda; Masateru Ishiguro; Yoshiaki Ishihara; Takahiro Iwata; Kosuke Kawahara; Shota Kikuchi; Kohei Kitazato; Koji Matsumoto; Moe Matsuoka; Tatsuhiro Michikami; Yuya Mimasu; Akira Miura; Tomokatsu Morota; Satoru Nakazawa; Noriyuki Namiki; Hirotomo Noda; Rina Noguchi; Naoko Ogawa; Kazunori Ogawa; Chisato Okamoto; Go Ono; Masanobu Ozaki; Takanao Saiki; Naoya Sakatani; Hirotaka Sawada; Hiroki Senshu; Yuri Shimaki; Kei Shirai; Yuto Takei; Hiroshi Takeuchi; Satoshi Tanaka; Eri Tatsumi; Fuyuto Terui; Ryudo Tsukizaki; Koji Wada; Manabu Yamada; Tetsuya Yamada; Yukio Yamamoto; Hajime Yano; Yasuhiro Yokota; Keisuke Yoshihara; Makoto Yoshikawa; Kent Yoshikawa; Masaki Fujimoto; Sei Ichiro Watanabe; Yuichi Tsuda

doi:10.2183/PJAB.98.015

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

Eizo Nakamura, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Christian Potiszil, Tsutomu Ota, Chie Sakaguchi, Masahiro Yamanaka, Dilan M. Ratnayake, Havishk Tripathi, Rahul Kumar, Maya Liliana Avramescu, Hidehisa Tsuchida, Yuusuke Yachi, Hitoshi Miura, Masanao Abe, Ryota Fukai, Shizuho Furuya, Kentaro HatakedaTasuku Hayashi, Yuya Hitomi, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Hiromichi Soejima, Seiji Sugita, Ayako Suzuki, Tomohiro Usui, Toru Yada, Daiki Yamamoto, Kasumi Yogata, Miwa Yoshitake, Masahiko Arakawa, Atsushi Fujii, Masahiko Hayakawa, Naoyuki Hirata, Naru Hirata, Rie Honda, Chikatoshi Honda, Satoshi Hosoda, Yu Ichi Iijima, Hitoshi Ikeda, Masateru Ishiguro, Yoshiaki Ishihara, Takahiro Iwata, Kosuke Kawahara, Shota Kikuchi, Kohei Kitazato, Koji Matsumoto, Moe Matsuoka, Tatsuhiro Michikami, Yuya Mimasu, Akira Miura, Tomokatsu Morota, Satoru Nakazawa, Noriyuki Namiki, Hirotomo Noda, Rina Noguchi, Naoko Ogawa, Kazunori Ogawa, Chisato Okamoto, Go Ono, Masanobu Ozaki, Takanao Saiki, Naoya Sakatani, Hirotaka Sawada, Hiroki Senshu, Yuri Shimaki, Kei Shirai, Yuto Takei, Hiroshi Takeuchi, Satoshi Tanaka, Eri Tatsumi, Fuyuto Terui, Ryudo Tsukizaki, Koji Wada, Manabu Yamada, Tetsuya Yamada, Yukio Yamamoto, Hajime Yano, Yasuhiro Yokota, Keisuke Yoshihara, Makoto Yoshikawa, Kent Yoshikawa, Masaki Fujimoto, Sei Ichiro Watanabe, Yuichi Tsuda

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

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, ∆17O, 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.

Original language	English
Pages (from-to)	227-282
Number of pages	56
Journal	Proceedings of the Japan Academy Series B: Physical and Biological Sciences
Volume	98
Issue number	6
DOIs	https://doi.org/10.2183/PJAB.98.015
Publication status	Published - 2022

Keywords

Comprehensive analysis
Hayabusa2
Interstellar medium
Protosolar nebula
Ryugu
Sample return

ASJC Scopus subject areas

Agricultural and Biological Sciences(all)
Physics and Astronomy(all)

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Nakamura, E., Kobayashi, K., Tanaka, R., Kunihiro, T., Kitagawa, H., Potiszil, C., Ota, T., Sakaguchi, C., Yamanaka, M., Ratnayake, D. M., Tripathi, H., Kumar, R., Avramescu, M. L., Tsuchida, H., Yachi, Y., Miura, H., Abe, M., Fukai, R., Furuya, S., ... Tsuda, Y. (2022). On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective. Proceedings of the Japan Academy Series B: Physical and Biological Sciences, 98(6), 227-282. https://doi.org/10.2183/PJAB.98.015

Nakamura, E , Kobayashi, K , Tanaka, R , Kunihiro, T , Kitagawa, H , Potiszil, C , Ota, T, Sakaguchi, C, Yamanaka, M, Ratnayake, DM, Tripathi, H, Kumar, R, Avramescu, ML, Tsuchida, H, Yachi, Y, Miura, H, Abe, M, Fukai, R, Furuya, S, Hatakeda, K, Hayashi, T, Hitomi, Y, Kumagai, K, Miyazaki, A, Nakato, A, Nishimura, M, Okada, T, Soejima, H, Sugita, S, Suzuki, A, Usui, T, Yada, T, Yamamoto, D, Yogata, K, Yoshitake, M, Arakawa, M, Fujii, A, Hayakawa, M, Hirata, N, Hirata, N, Honda, R, Honda, C, Hosoda, S, Iijima, YI, Ikeda, H, Ishiguro, M, Ishihara, Y, Iwata, T, Kawahara, K, Kikuchi, S, Kitazato, K, Matsumoto, K, Matsuoka, M, Michikami, T, Mimasu, Y, Miura, A, Morota, T, Nakazawa, S, Namiki, N, Noda, H, Noguchi, R, Ogawa, N, Ogawa, K, Okamoto, C, Ono, G, Ozaki, M, Saiki, T, Sakatani, N, Sawada, H, Senshu, H, Shimaki, Y, Shirai, K, Takei, Y, Takeuchi, H, Tanaka, S, Tatsumi, E, Terui, F, Tsukizaki, R, Wada, K, Yamada, M, Yamada, T, Yamamoto, Y, Yano, H, Yokota, Y, Yoshihara, K, Yoshikawa, M, Yoshikawa, K, Fujimoto, M, Watanabe, SI & Tsuda, Y 2022, 'On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective', Proceedings of the Japan Academy Series B: Physical and Biological Sciences, vol. 98, no. 6, pp. 227-282. https://doi.org/10.2183/PJAB.98.015

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title = "On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective",

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, ∆17O, 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{\textquoteright}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.",

keywords = "Comprehensive analysis, Hayabusa2, Interstellar medium, Protosolar nebula, Ryugu, Sample return",

author = "Eizo Nakamura and Katsura Kobayashi and Ryoji Tanaka and Tak Kunihiro and Hiroshi Kitagawa and Christian Potiszil and Tsutomu Ota and Chie Sakaguchi and Masahiro Yamanaka and Ratnayake, {Dilan M.} and Havishk Tripathi and Rahul Kumar and Avramescu, {Maya Liliana} and Hidehisa Tsuchida and Yuusuke Yachi and Hitoshi Miura and Masanao Abe and Ryota Fukai and Shizuho Furuya and Kentaro Hatakeda and Tasuku Hayashi and Yuya Hitomi and Kazuya Kumagai and Akiko Miyazaki and Aiko Nakato and Masahiro Nishimura and Tatsuaki Okada and Hiromichi Soejima and Seiji Sugita and Ayako Suzuki and Tomohiro Usui and Toru Yada and Daiki Yamamoto and Kasumi Yogata and Miwa Yoshitake and Masahiko Arakawa and Atsushi Fujii and Masahiko Hayakawa and Naoyuki Hirata and Naru Hirata and Rie Honda and Chikatoshi Honda and Satoshi Hosoda and Iijima, {Yu Ichi} and Hitoshi Ikeda and Masateru Ishiguro and Yoshiaki Ishihara and Takahiro Iwata and Kosuke Kawahara and Shota Kikuchi and Kohei Kitazato and Koji Matsumoto and Moe Matsuoka and Tatsuhiro Michikami and Yuya Mimasu and Akira Miura and Tomokatsu Morota and Satoru Nakazawa and Noriyuki Namiki and Hirotomo Noda and Rina Noguchi and Naoko Ogawa and Kazunori Ogawa and Chisato Okamoto and Go Ono and Masanobu Ozaki and Takanao Saiki and Naoya Sakatani and Hirotaka Sawada and Hiroki Senshu and Yuri Shimaki and Kei Shirai and Yuto Takei and Hiroshi Takeuchi and Satoshi Tanaka and Eri Tatsumi and Fuyuto Terui and Ryudo Tsukizaki and Koji Wada and Manabu Yamada and Tetsuya Yamada and Yukio Yamamoto and Hajime Yano and Yasuhiro Yokota and Keisuke Yoshihara and Makoto Yoshikawa and Kent Yoshikawa and Masaki Fujimoto and Watanabe, {Sei Ichiro} and Yuichi Tsuda",

note = "Funding Information: We are deeply indebted to Dr. Ikuo Kushiro, M.J.A. and Dr. Yoshio Fukao, M.J.A. for reviewing and handling this paper as Editors. We are also deeply grateful to the three anonymous reviewers who patiently reviewed such a long and wide-ranging paper, resulting in a significant improvement in the quality of the paper. We thank Drs. Noboru Nakamura, Akira Kouchi, Toshihiko Kadono, Eiichiro Kokubo and Tetsuo Yamamoto for discussions concerning the elemental abundances of chondrites, physical properties of ice, evolution of comets and the destruction processes of planetary materials. We acknowledge Drs. Zhao-Feng Zhang, Yongsheng He, and Shichun Huang for kindly arranging and providing the Ca standard. We also thank Dr. Ingo Leya for kindly providing advice on how to calculate cosmogenic Ne productivity. We would like to thank Takahiro Sato and Shinichi Kimura for designing the powder sample saucer on the microtome, making it possible to carry out our comprehensive geochemical analysis. We are grateful to Kayo Tanaka, Kazuyuki Tanaka, and Dr. Elena Kalinina for their technical assistance. This study was supported by the programs for “Promoting the Enhancement of Research Universities” and “National University Innovation Creation” to Okayama University by the MEXT and the Cabinet Office of Japan, respectively. Publisher Copyright: {\textcopyright} 2022. The Author(s). Published under the terms of the CC BYNC license https://creativecommons.org/licenses/by-nc/4.0/.",

year = "2022",

doi = "10.2183/PJAB.98.015",

language = "English",

volume = "98",

pages = "227--282",

journal = "Proceedings of the Japan Academy Series B: Physical and Biological Sciences",

issn = "0386-2208",

publisher = "Japan Academy",

number = "6",

}

TY - JOUR

T1 - On the origin and evolution of the asteroid Ryugu

T2 - A comprehensive geochemical perspective

AU - Nakamura, Eizo

AU - Kobayashi, Katsura

AU - Tanaka, Ryoji

AU - Kunihiro, Tak

AU - Kitagawa, Hiroshi

AU - Potiszil, Christian

AU - Ota, Tsutomu

AU - Sakaguchi, Chie

AU - Yamanaka, Masahiro

AU - Ratnayake, Dilan M.

AU - Tripathi, Havishk

AU - Kumar, Rahul

AU - Avramescu, Maya Liliana

AU - Tsuchida, Hidehisa

AU - Yachi, Yuusuke

AU - Miura, Hitoshi

AU - Abe, Masanao

AU - Fukai, Ryota

AU - Furuya, Shizuho

AU - Hatakeda, Kentaro

AU - Hayashi, Tasuku

AU - Hitomi, Yuya

AU - Kumagai, Kazuya

AU - Miyazaki, Akiko

AU - Nakato, Aiko

AU - Nishimura, Masahiro

AU - Okada, Tatsuaki

AU - Soejima, Hiromichi

AU - Sugita, Seiji

AU - Suzuki, Ayako

AU - Usui, Tomohiro

AU - Yada, Toru

AU - Yamamoto, Daiki

AU - Yogata, Kasumi

AU - Yoshitake, Miwa

AU - Arakawa, Masahiko

AU - Fujii, Atsushi

AU - Hayakawa, Masahiko

AU - Hirata, Naoyuki

AU - Hirata, Naru

AU - Honda, Rie

AU - Honda, Chikatoshi

AU - Hosoda, Satoshi

AU - Iijima, Yu Ichi

AU - Ikeda, Hitoshi

AU - Ishiguro, Masateru

AU - Ishihara, Yoshiaki

AU - Iwata, Takahiro

AU - Kawahara, Kosuke

AU - Kikuchi, Shota

AU - Kitazato, Kohei

AU - Matsumoto, Koji

AU - Matsuoka, Moe

AU - Michikami, Tatsuhiro

AU - Mimasu, Yuya

AU - Miura, Akira

AU - Morota, Tomokatsu

AU - Nakazawa, Satoru

AU - Namiki, Noriyuki

AU - Noda, Hirotomo

AU - Noguchi, Rina

AU - Ogawa, Naoko

AU - Ogawa, Kazunori

AU - Okamoto, Chisato

AU - Ono, Go

AU - Ozaki, Masanobu

AU - Saiki, Takanao

AU - Sakatani, Naoya

AU - Sawada, Hirotaka

AU - Senshu, Hiroki

AU - Shimaki, Yuri

AU - Shirai, Kei

AU - Takei, Yuto

AU - Takeuchi, Hiroshi

AU - Tanaka, Satoshi

AU - Tatsumi, Eri

AU - Terui, Fuyuto

AU - Tsukizaki, Ryudo

AU - Wada, Koji

AU - Yamada, Manabu

AU - Yamada, Tetsuya

AU - Yamamoto, Yukio

AU - Yano, Hajime

AU - Yokota, Yasuhiro

AU - Yoshihara, Keisuke

AU - Yoshikawa, Makoto

AU - Yoshikawa, Kent

AU - Fujimoto, Masaki

AU - Watanabe, Sei Ichiro

AU - Tsuda, Yuichi

N1 - Funding Information: We are deeply indebted to Dr. Ikuo Kushiro, M.J.A. and Dr. Yoshio Fukao, M.J.A. for reviewing and handling this paper as Editors. We are also deeply grateful to the three anonymous reviewers who patiently reviewed such a long and wide-ranging paper, resulting in a significant improvement in the quality of the paper. We thank Drs. Noboru Nakamura, Akira Kouchi, Toshihiko Kadono, Eiichiro Kokubo and Tetsuo Yamamoto for discussions concerning the elemental abundances of chondrites, physical properties of ice, evolution of comets and the destruction processes of planetary materials. We acknowledge Drs. Zhao-Feng Zhang, Yongsheng He, and Shichun Huang for kindly arranging and providing the Ca standard. We also thank Dr. Ingo Leya for kindly providing advice on how to calculate cosmogenic Ne productivity. We would like to thank Takahiro Sato and Shinichi Kimura for designing the powder sample saucer on the microtome, making it possible to carry out our comprehensive geochemical analysis. We are grateful to Kayo Tanaka, Kazuyuki Tanaka, and Dr. Elena Kalinina for their technical assistance. This study was supported by the programs for “Promoting the Enhancement of Research Universities” and “National University Innovation Creation” to Okayama University by the MEXT and the Cabinet Office of Japan, respectively. Publisher Copyright: © 2022. The Author(s). Published under the terms of the CC BYNC license https://creativecommons.org/licenses/by-nc/4.0/.

PY - 2022

Y1 - 2022

N2 - 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, ∆17O, 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.

AB - 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, ∆17O, 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.

KW - Comprehensive analysis

KW - Hayabusa2

KW - Interstellar medium

KW - Protosolar nebula

KW - Ryugu

KW - Sample return

UR - http://www.scopus.com/inward/record.url?scp=85131903433&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85131903433&partnerID=8YFLogxK

U2 - 10.2183/PJAB.98.015

DO - 10.2183/PJAB.98.015

M3 - Article

C2 - 35691845

AN - SCOPUS:85131903433

SN - 0386-2208

VL - 98

SP - 227

EP - 282

JO - Proceedings of the Japan Academy Series B: Physical and Biological Sciences

JF - Proceedings of the Japan Academy Series B: Physical and Biological Sciences

IS - 6

ER -

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

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