The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal

Haolan Tang; Edward D. Young; Lauren Tafla; Andreas Pack; Tommaso Di Rocco; Yoshinari Abe; Jérôme Aléon; Conel M. O'D. Alexander; Sachiko Amari; Yuri Amelin; Ken-ichi Bajo; Martin Bizzarro; Audrey Bouvier; Richard W. Carlson; Marc Chaussidon; Byeon-Gak Choi; Nicolas Dauphas; Andrew M. Davis; Wataru Fujiya; Ryota Fukai; Ikshu Gautam; Makiko K. Haba; Yuki Hibiya; Hiroshi Hidaka; Hisashi Homma; Peter Hoppe; Gary R. Huss; Kiyohiro Ichida; Tsuyoshi Iizuka; Trevor R. Ireland; Akira Ishikawa; Motoo Ito; Shoichi Itoh; Noriyuki Kawasaki; Noriko T. Kita; Kouki Kitajima; Thorsten Kleine; Shintaro Komatani; Alexander N. Krot; Ming-Chang Liu; Yuki Masuda; Kevin D. McKeegan; Mayu Morita; Kazuko Motomura; Frédéric Moynier; Kazuhide Nagashima; Izumi Nakai; Ann Nguyen; Larry Nittler; Morihiko Onose; Changkun Park; Laurette Piani; Liping Qin; Sara S. Russell; Naoya Sakamoto; Maria Schönbächler; Kentaro Terada; Yasuko Terada; Tomohiro Usui; Sohei Wada; Meenakshi Wadhwa; Richard J. Walker; Katsuyuki Yamashita; Qing-Zhu Yin; Tetsuya Yokoyama; Shigekazu Yoneda; Hiroharu Yui; Ai-Cheng Zhang; Tomoki Nakamura; Hiroshi Naraoka; Takaaki Noguchi; Ryuji Okazaki; Kanako Sakamoto; Hikaru Yabuta; Masanao Abe; Akiko Miyazaki; Aiko Nakato; Masahiro Nishimura; Tatsuaki Okada; Toru Yada; Kasumi Yogata; Satoru Nakazawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Yuichi Tsuda; Sei-ichiro Watanabe; Makoto Yoshikawa; Shogo Tachibana; Hisayoshi Yurimoto

doi:10.3847/PSJ/acea62

The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal

Haolan Tang, Edward D. Young, Lauren Tafla, Andreas Pack, Tommaso Di Rocco, Yoshinari Abe, Jérôme Aléon, Conel M. O'D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas Dauphas, Andrew M. Davis, Wataru Fujiya, Ryota FukaiIkshu Gautam, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor R. Ireland, Akira Ishikawa, Motoo Ito, Shoichi Itoh, Noriyuki Kawasaki, Noriko T. Kita, Kouki Kitajima, Thorsten Kleine, Shintaro Komatani, Alexander N. Krot, Ming-Chang Liu, Yuki Masuda, Kevin D. McKeegan, Mayu Morita, Kazuko Motomura, Frédéric Moynier, Kazuhide Nagashima, Izumi Nakai, Ann Nguyen, Larry Nittler, Morihiko Onose, Changkun Park, Laurette Piani, Liping Qin, Sara S. Russell, Naoya Sakamoto, Maria Schönbächler, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Sohei Wada, Meenakshi Wadhwa, Richard J. Walker, Katsuyuki Yamashita, Qing-Zhu Yin, Tetsuya Yokoyama, Shigekazu Yoneda, Hiroharu Yui, Ai-Cheng Zhang, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Hikaru Yabuta, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei-ichiro Watanabe, Makoto Yoshikawa, Shogo Tachibana, Hisayoshi Yurimoto

Centre for Star and Planet Formation

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Abstract

We present oxygen isotopic analyses of fragments of the near-Earth Cb-type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites. Small differences between Ryugu samples and CI chondrites in
can be explained at least in part by contamination of the latter by terrestrial water. The discovery that a randomly sampled C-complex asteroid is composed of CI-chondrite-like rock, combined with thermal models for formation prior to significant decay of the short-lived radioisotope 26Al, suggests that if lithified at the time of alteration, the parent body was small (≪50 km radius). If the parent planetesimal was large (>50 km in radius), it was likely composed of high-permeability, poorly lithified sediment rather than consolidated rock.

Original language	English
Article number	144
Journal	The Planetary Science Journal
Volume	4
Issue number	8
Number of pages	15
DOIs	https://doi.org/10.3847/PSJ/acea62
Publication status	Published - 2023

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Tang, H., Young, E. D., Tafla, L., Pack, A., Di Rocco, T., Abe, Y., Aléon, J., Alexander, C. M. OD., Amari, S., Amelin, Y., Bajo, K., Bizzarro, M., Bouvier, A., Carlson, R. W., Chaussidon, M., Choi, B.-G., Dauphas, N., Davis, A. M., Fujiya, W., ... Yurimoto, H. (2023). The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal. The Planetary Science Journal, 4(8), Article 144. https://doi.org/10.3847/PSJ/acea62

Tang, H, Young, ED, Tafla, L, Pack, A, Di Rocco, T, Abe, Y, Aléon, J, Alexander, CMOD, Amari, S, Amelin, Y, Bajo, K, Bizzarro, M, Bouvier, A, Carlson, RW, Chaussidon, M, Choi, B-G, Dauphas, N, Davis, AM, Fujiya, W, Fukai, R, Gautam, I, Haba, MK, Hibiya, Y, Hidaka, H, Homma, H, Hoppe, P, Huss, GR, Ichida, K, Iizuka, T, Ireland, TR, Ishikawa, A, Ito, M, Itoh, S, Kawasaki, N, Kita, NT, Kitajima, K, Kleine, T, Komatani, S, Krot, AN, Liu, M-C, Masuda, Y, McKeegan, KD, Morita, M, Motomura, K, Moynier, F, Nagashima, K, Nakai, I, Nguyen, A, Nittler, L, Onose, M, Park, C, Piani, L, Qin, L, Russell, SS, Sakamoto, N, Schönbächler, M, Terada, K, Terada, Y, Usui, T, Wada, S, Wadhwa, M, Walker, RJ, Yamashita, K, Yin, Q-Z, Yokoyama, T, Yoneda, S, Yui, H, Zhang, A-C, Nakamura, T, Naraoka, H, Noguchi, T, Okazaki, R, Sakamoto, K, Yabuta, H, Abe, M, Miyazaki, A, Nakato, A, Nishimura, M, Okada, T, Yada, T, Yogata, K, Nakazawa, S, Saiki, T, Tanaka, S, Terui, F, Tsuda, Y, Watanabe, S, Yoshikawa, M, Tachibana, S & Yurimoto, H 2023, 'The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal', The Planetary Science Journal, vol. 4, no. 8, 144. https://doi.org/10.3847/PSJ/acea62

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title = "The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal",

abstract = "We present oxygen isotopic analyses of fragments of the near-Earth Cb-type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites. Small differences between Ryugu samples and CI chondrites in can be explained at least in part by contamination of the latter by terrestrial water. The discovery that a randomly sampled C-complex asteroid is composed of CI-chondrite-like rock, combined with thermal models for formation prior to significant decay of the short-lived radioisotope 26Al, suggests that if lithified at the time of alteration, the parent body was small (≪50 km radius). If the parent planetesimal was large (>50 km in radius), it was likely composed of high-permeability, poorly lithified sediment rather than consolidated rock.",

author = "Haolan Tang and Young, {Edward D.} and Lauren Tafla and Andreas Pack and {Di Rocco}, Tommaso and Yoshinari Abe and J{\'e}r{\^o}me Al{\'e}on and Alexander, {Conel M. O'D.} and Sachiko Amari and Yuri Amelin and Ken-ichi Bajo and Martin Bizzarro and Audrey Bouvier and Carlson, {Richard W.} and Marc Chaussidon and Byeon-Gak Choi and Nicolas Dauphas and Davis, {Andrew M.} and Wataru Fujiya and Ryota Fukai and Ikshu Gautam and Haba, {Makiko K.} and Yuki Hibiya and Hiroshi Hidaka and Hisashi Homma and Peter Hoppe and Huss, {Gary R.} and Kiyohiro Ichida and Tsuyoshi Iizuka and Ireland, {Trevor R.} and Akira Ishikawa and Motoo Ito and Shoichi Itoh and Noriyuki Kawasaki and Kita, {Noriko T.} and Kouki Kitajima and Thorsten Kleine and Shintaro Komatani and Krot, {Alexander N.} and Ming-Chang Liu and Yuki Masuda and McKeegan, {Kevin D.} and Mayu Morita and Kazuko Motomura and Fr{\'e}d{\'e}ric Moynier and Kazuhide Nagashima and Izumi Nakai and Ann Nguyen and Larry Nittler and Morihiko Onose and Changkun Park and Laurette Piani and Liping Qin and Russell, {Sara S.} and Naoya Sakamoto and Maria Sch{\"o}nb{\"a}chler and Kentaro Terada and Yasuko Terada and Tomohiro Usui and Sohei Wada and Meenakshi Wadhwa and Walker, {Richard J.} and Katsuyuki Yamashita and Qing-Zhu Yin and Tetsuya Yokoyama and Shigekazu Yoneda and Hiroharu Yui and Ai-Cheng Zhang and Tomoki Nakamura and Hiroshi Naraoka and Takaaki Noguchi and Ryuji Okazaki and Kanako Sakamoto and Hikaru Yabuta and Masanao Abe and Akiko Miyazaki and Aiko Nakato and Masahiro Nishimura and Tatsuaki Okada and Toru Yada and Kasumi Yogata and Satoru Nakazawa and Takanao Saiki and Satoshi Tanaka and Fuyuto Terui and Yuichi Tsuda and Sei-ichiro Watanabe and Makoto Yoshikawa and Shogo Tachibana and Hisayoshi Yurimoto",

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AU - Tang, Haolan

AU - Young, Edward D.

AU - Tafla, Lauren

AU - Pack, Andreas

AU - Di Rocco, Tommaso

AU - Abe, Yoshinari

AU - Aléon, Jérôme

AU - Alexander, Conel M. O'D.

AU - Amari, Sachiko

AU - Amelin, Yuri

AU - Bajo, Ken-ichi

AU - Bizzarro, Martin

AU - Bouvier, Audrey

AU - Carlson, Richard W.

AU - Chaussidon, Marc

AU - Choi, Byeon-Gak

AU - Dauphas, Nicolas

AU - Davis, Andrew M.

AU - Fujiya, Wataru

AU - Fukai, Ryota

AU - Gautam, Ikshu

AU - Haba, Makiko K.

AU - Hibiya, Yuki

AU - Hidaka, Hiroshi

AU - Homma, Hisashi

AU - Hoppe, Peter

AU - Huss, Gary R.

AU - Ichida, Kiyohiro

AU - Iizuka, Tsuyoshi

AU - Ireland, Trevor R.

AU - Ishikawa, Akira

AU - Ito, Motoo

AU - Itoh, Shoichi

AU - Kawasaki, Noriyuki

AU - Kita, Noriko T.

AU - Kitajima, Kouki

AU - Kleine, Thorsten

AU - Komatani, Shintaro

AU - Krot, Alexander N.

AU - Liu, Ming-Chang

AU - Masuda, Yuki

AU - McKeegan, Kevin D.

AU - Morita, Mayu

AU - Motomura, Kazuko

AU - Moynier, Frédéric

AU - Nagashima, Kazuhide

AU - Nakai, Izumi

AU - Nguyen, Ann

AU - Nittler, Larry

AU - Onose, Morihiko

AU - Park, Changkun

AU - Piani, Laurette

AU - Qin, Liping

AU - Russell, Sara S.

AU - Sakamoto, Naoya

AU - Schönbächler, Maria

AU - Terada, Kentaro

AU - Terada, Yasuko

AU - Usui, Tomohiro

AU - Wada, Sohei

AU - Wadhwa, Meenakshi

AU - Walker, Richard J.

AU - Yamashita, Katsuyuki

AU - Yin, Qing-Zhu

AU - Yokoyama, Tetsuya

AU - Yoneda, Shigekazu

AU - Yui, Hiroharu

AU - Zhang, Ai-Cheng

AU - Nakamura, Tomoki

AU - Naraoka, Hiroshi

AU - Noguchi, Takaaki

AU - Okazaki, Ryuji

AU - Sakamoto, Kanako

AU - Yabuta, Hikaru

AU - Abe, Masanao

AU - Miyazaki, Akiko

AU - Nakato, Aiko

AU - Nishimura, Masahiro

AU - Okada, Tatsuaki

AU - Yada, Toru

AU - Yogata, Kasumi

AU - Nakazawa, Satoru

AU - Saiki, Takanao

AU - Tanaka, Satoshi

AU - Terui, Fuyuto

AU - Tsuda, Yuichi

AU - Watanabe, Sei-ichiro

AU - Yoshikawa, Makoto

AU - Tachibana, Shogo

AU - Yurimoto, Hisayoshi

PY - 2023

Y1 - 2023

N2 - We present oxygen isotopic analyses of fragments of the near-Earth Cb-type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites. Small differences between Ryugu samples and CI chondrites in can be explained at least in part by contamination of the latter by terrestrial water. The discovery that a randomly sampled C-complex asteroid is composed of CI-chondrite-like rock, combined with thermal models for formation prior to significant decay of the short-lived radioisotope 26Al, suggests that if lithified at the time of alteration, the parent body was small (≪50 km radius). If the parent planetesimal was large (>50 km in radius), it was likely composed of high-permeability, poorly lithified sediment rather than consolidated rock.

AB - We present oxygen isotopic analyses of fragments of the near-Earth Cb-type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites. Small differences between Ryugu samples and CI chondrites in can be explained at least in part by contamination of the latter by terrestrial water. The discovery that a randomly sampled C-complex asteroid is composed of CI-chondrite-like rock, combined with thermal models for formation prior to significant decay of the short-lived radioisotope 26Al, suggests that if lithified at the time of alteration, the parent body was small (≪50 km radius). If the parent planetesimal was large (>50 km in radius), it was likely composed of high-permeability, poorly lithified sediment rather than consolidated rock.

U2 - 10.3847/PSJ/acea62

DO - 10.3847/PSJ/acea62

M3 - Journal article

SN - 2632-3338

VL - 4

JO - The Planetary Science Journal

JF - The Planetary Science Journal

IS - 8

M1 - 144

ER -