Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites
Tetsuya Yokoyama(Tokyo Institute of Technology), K. Nagashima(University of Hawaiʻi at Mānoa), Izumi Nakai(Tokyo University of Science), Edward Young(Planetary Science Institute), Yoshinari Abe(Tokyo Denki University), J. Aléon(Sorbonne Université), C. M. O'd. Alexander(Carnegie Institution for Science), S. Amari, Yuri Amelin(Chinese Academy of Sciences), Ken‐ichi Bajo(Hokkaido University), Martin Bizzarro(University of Copenhagen), Audrey Bouvier(University of Bayreuth), Richard W. Carlson(Carnegie Institution for Science), Marc Chaussidon(Institut de physique du globe de Paris), Byeon‐Gak Choi(Seoul National University), Nicolas Dauphas(University of Chicago), A. M. Davis(University of Chicago), Tommaso Di Rocco(University of Göttingen), Wataru Fujiya(Ibaraki University), Ryota Fukai(Japan Aerospace Exploration Agency), Ikshu Gautam(Tokyo Institute of Technology), Makiko K. Haba(Tokyo Institute of Technology), Yuki Hibiya(The University of Tokyo), Hiroshi Hidaka(Nagoya University), Hisashi Homma(Rigaku (Japan)), P. Höppe(Max Planck Institute for Chemistry), G. R. Huss(University of Hawaiʻi at Mānoa), Kiyohiro Ichida(Horiba (Japan)), Tsuyoshi Iizuka, T. R. Ireland(The University of Queensland), Akira Ishikawa(Tokyo Institute of Technology), Motoo Ito(Japan Agency for Marine-Earth Science and Technology), Shoichi Itoh(Kyoto University), Noriyuki Kawasaki(Hokkaido University), N. T. Kita(University of Wisconsin–Madison), Kouki Kitajima(University of Wisconsin–Madison), T. Kleine(Max Planck Institute for Solar System Research), Shintaro Komatani(Horiba (Japan)), Alexander N. Krot(University of Hawaiʻi at Mānoa), Ming‐Chang Liu(Planetary Science Institute), Yuki Masuda(Tokyo Institute of Technology), K. D. McKeegan(Planetary Science Institute), Mayu Morita(Horiba (Japan)), Kazuko Motomura(Rigaku (Japan)), Frédéric Moynier(Institut de physique du globe de Paris), A. N. Nguyen(National Aeronautics and Space Administration), L. R. Nittler(Carnegie Institution for Science), Morihiko Onose(Horiba (Japan)), Andreas Pack(University of Göttingen), Changkun Park(Korea Polar Research Institute), Laurette Piani(Centre de Recherches Pétrographiques et Géochimiques), Liping Qin(University of Science and Technology of China), S. S. Russell(Natural History Museum), Naoya Sakamoto(Hokkaido University), Maria Schönbächler(ETH Zurich), Lauren Tafla(Planetary Science Institute), Haolan Tang(Planetary Science Institute), Kentaro Terada(Osaka Health Science University), Yasuko Terada(Japan Synchrotron Radiation Research Institute), Tomohiro Usui(Japan Aerospace Exploration Agency), Sohei Wada(Hokkaido University), M. Wadhwa(Arizona State University), R. J. Walker(University of Maryland, College Park), Katsuyuki Yamashita(Okayama University), Qing‐Zhu Yin(Planetary Science Institute), Shigekazu Yoneda(National Museum of Nature and Science), Hiroharu Yui(Tokyo University of Science), Ai‐Cheng Zhang(Nanjing University), H. C. Connolly(Rowan University), D. S. Lauretta(University of Arizona), Tomoki Nakamura(Tohoku University), Hiroshi Naraoka(Kyushu University), T. Noguchi(Kyoto University), Ryuji Okazaki(Kyushu University), Kanako Sakamoto(Japan Aerospace Exploration Agency), Hikaru Yabuta(Hiroshima University), Masanao Abe(Japan Aerospace Exploration Agency), Masahiko Arakawa(Kobe University), Atsushi Fujii(Japan Aerospace Exploration Agency), Masahiko Hayakawa(Japan Aerospace Exploration Agency), Naoyuki Hirata(University of Aizu), Naru Hirata(University of Aizu), Rie Honda(Kōchi University), Chikatoshi Honda(University of Aizu), S Hosoda(Japan Aerospace Exploration Agency), Yuichi Iijima(Japan Aerospace Exploration Agency), Hitoshi Ikeda(Japan Aerospace Exploration Agency), Masateru Ishiguro(Seoul National University), Yoshiaki Ishihara(Japan Aerospace Exploration Agency), Takahiro Iwata(The Graduate University for Advanced Studies, SOKENDAI), Kosuke Kawahara(Japan Aerospace Exploration Agency), Shota Kikuchi(Chiba Institute of Technology), K. Kitazato(University of Aizu), Koji Matsumoto(National Astronomical Observatory of Japan), M. Matsuoka(Japan Aerospace Exploration Agency), Tatsuhiro Michikami(Kindai University), Yuya Mimasu(Japan Aerospace Exploration Agency), Akira Miura(Japan Aerospace Exploration Agency), Tomokatsu Morota, Satoru Nakazawa(Japan Aerospace Exploration Agency), Noriyuki Namiki(National Astronomical Observatory of Japan), Hirotomo Noda(National Astronomical Observatory of Japan), Rina Noguchi(Niigata Institute of Technology), Naoko Ogawa(Japan Aerospace Exploration Agency), Kazunori Ogawa(Japan Aerospace Exploration Agency), Tatsuaki Okada(Japan Aerospace Exploration Agency), Chisato Okamoto(Kobe University), Go Ono(Japan Aerospace Exploration Agency), Masanobu Ozaki(The Graduate University for Advanced Studies, SOKENDAI), Takanao Saiki(Japan Aerospace Exploration Agency), Naoya Sakatani(Rikkyo University), Hirotaka Sawada(Japan Aerospace Exploration Agency), Hiroki Senshu(Chiba Institute of Technology), Yuri Shimaki(Japan Aerospace Exploration Agency), K. Shirai(Japan Aerospace Exploration Agency), Seiji Sugita, Yuto Takei(Japan Aerospace Exploration Agency), Hiroshi Takeuchi(Japan Aerospace Exploration Agency), Satoshi Tanaka(Japan Aerospace Exploration Agency), Eri Tatsumi(Universidad de La Laguna), Fuyuto Terui(Kanagawa Institute of Technology), Yuichi Tsuda(Japan Aerospace Exploration Agency), Ryudo Tsukizaki(Japan Aerospace Exploration Agency), Koji Wada(Chiba Institute of Technology), Sei‐ichiro Watanabe(Nagoya University), Manabu Yamada(Chiba Institute of Technology), Tetsuya Yamada(Japan Aerospace Exploration Agency), Yukio Yamamoto(Japan Aerospace Exploration Agency), Hajime Yano(Japan Aerospace Exploration Agency), Y. Yokota(Japan Aerospace Exploration Agency), Keisuke Yoshihara(Japan Aerospace Exploration Agency), Makoto Yoshikawa(Japan Aerospace Exploration Agency), Kent Yoshikawa(Japan Aerospace Exploration Agency), Shizuho Furuya(Japan Aerospace Exploration Agency), Kentaro Hatakeda(Japan Steel Works (Japan)), Tasuku Hayashi(Japan Aerospace Exploration Agency), Yuya Hitomi(Japan Steel Works (Japan)), Kazuya Kumagai(Japan Steel Works (Japan)), Akiko Miyazaki(Japan Aerospace Exploration Agency), Aiko Nakato(Japan Aerospace Exploration Agency), Masahiro Nishimura(Japan Aerospace Exploration Agency), Hiromichi Soejima(Japan Steel Works (Japan)), Ayako Suzuki(Japan Steel Works (Japan)), Toru Yada(Japan Aerospace Exploration Agency), Daiki Yamamoto(Japan Aerospace Exploration Agency), Kasumi Yogata(Japan Aerospace Exploration Agency), Miwa Yoshitake(Japan Aerospace Exploration Agency), Shogo Tachibana(Tokyo University of Science), Hisayoshi Yurimoto(Hokkaido University)
Cited by 331Open Access
Abstract
Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the Hayabusa2 spacecraft. We measured the mineralogy and bulk chemical and isotopic compositions of Ryugu samples. The samples are mainly composed of materials similar to those of carbonaceous chondrite meteorites, particularly the CI (Ivuna-type) group. The samples consist predominantly of minerals formed in aqueous fluid on a parent planetesimal. The primary minerals were altered by fluids at a temperature of 37° ± 10°C, about [Formula: see text] million (statistical) or [Formula: see text] million (systematic) years after the formation of the first solids in the Solar System. After aqueous alteration, the Ryugu samples were likely never heated above ~100°C. The samples have a chemical composition that more closely resembles that of the Sun's photosphere than other natural samples do.
Related Papers
No related papers found
Powered by citation graph analysis