Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

• 成果类型: Article
• 署名作者: Yokoyama, Tetsuya; Nagashima, Kazuhide; Nakai, Izumi; Young, Edward D.; Abe, Yoshinari; Aleon, Jerome; Alexander, Conel M. O'D.; Amari, Sachiko; Amelin, Yuri; Bajo, Ken-ichi; Bizzarro, Martin; Bouvier, Audrey; Carlson, Richard W.; Chaussidon, Marc; Choi, Byeon-Gak; Dauphas, Nicolas; Davis, Andrew M.; Di Rocco, Tommaso; Fujiya, Wataru; Fukai, Ryota; Gautam, Ikshu; Haba, Makiko K.; Hibiya, Yuki; Hidaka, Hiroshi; Homma, Hisashi; Hoppe, Peter; Huss, Gary R.; Ichida, Kiyohiro; Iizuka, Tsuyoshi; Ireland, Trevor R.; Ishikawa, Akira; Ito, Motoo; Itoh, Shoichi; Kawasaki, Noriyuki; Kita, Noriko T.; Kitajima, Kouki; Kleine, Thorsten; Komatani, Shintaro; Krot, Alexander N.; Liu, Ming-Chang; Masuda, Yuki; McKeegan, Kevin D.; Morita, Mayu; Motomura, Kazuko; Moynier, Frederic; Nguyen, Ann; Nittler, Larry; Onose, Morihiko; Pack, Andreas; Park, Changkun; Piani, Laurette; Qin, Liping; Russell, Sara S.; Sakamoto, Naoya; Schoenbaechler, Maria; Tafla, Lauren; Tang, Haolan; Terada, Kentaro; Terada, Yasuko; Usui, Tomohiro; Wada, Sohei; Wadhwa, Meenakshi; Walker, Richard J.; Yamashita, Katsuyuki; Yin, Qing-Zhu; Yoneda, Shigekazu; Yui, Hiroharu; Zhang, Ai-Cheng; Connolly Jr, Harold C.; Lauretta, Dante S.; Nakamura, Tomoki; Naraoka, Hiroshi; Noguchi, Takaaki; Okazaki, Ryuji; Sakamoto, Kanako; Yabuta, Hikaru; Abe, Masanao; 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; Okada, Tatsuaki; Okamoto, Chisato; Ono, Go; Ozaki, Masanobu; Saiki, Takanao; Sakatani, Naoya; Sawada, Hirotaka; Senshu, Hiroki; Shimaki, Yuri; Shirai, Kei; Sugita, Seiji; Takei, Yuto; Takeuchi, Hiroshi; Tanaka, Satoshi; Tatsumi, Eri; Terui, Fuyuto; Tsuda, Yuichi; Tsukizaki, Ryudo; Wada, Koji; Watanabe, Sei-ichiro; Yamada, Manabu; Yamada, Tetsuya; Yamamoto, Yukio; Yano, Hajime; Yokota, Yasuhiro; Yoshihara, Keisuke; Yoshikawa, Makoto; Yoshikawa, Kent; Furuya, Shizuho; Hatakeda, Kentaro; Hayashi, Tasuku; Hitomi, Yuya; Kumagai, Kazuya; Miyazaki, Akiko; Nakato, Aiko; Nishimura, Masahiro; Soejima, Hiromichi; Suzuki, Ayako; Yada, Toru; Yamamoto, Daiki; Yogata, Kasumi; Yoshitake, Miwa; Tachibana, Shogo; Yurimoto, Hisayoshi
• 署名单位: Institute of Science Tokyo; Tokyo Institute of Technology; University of Hawaii System; University of Hawaii Manoa; Tokyo University of Science; University of California System; University of California Los Angeles; Tokyo Denki University; Institut de Recherche pour le Developpement (IRD); Sorbonne Universite; Universite Paris Cite; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Physics (INP); Carnegie Institution for Science; Washington University (WUSTL); Washington University (WUSTL); Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Hokkaido University; University of Copenhagen; University of Bayreuth; Centre National de la Recherche Scientifique (CNRS); Universite Paris Cite; Seoul National University (SNU); University of Chicago; University of Chicago; University of Gottingen; Ibaraki University; Japan Aerospace Exploration Agency (JAXA); Institute of Space & Astronautical Science (ISAS); University of Tokyo; Nagoya University; Rigaku Corporation; Max Planck Society; University of Tokyo; University of Queensland; Japan Agency for Marine-Earth Science & Technology (JAMSTEC); Kyoto University; University of Wisconsin System; University of Wisconsin Madison; Max Planck Society; Rigaku Corporation; National Aeronautics & Space Administration (NASA); NASA Johnson Space Center; Korea Polar Research Institute (KOPRI); Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS); Chinese Academy of Sciences; University of Science & Technology of China, CAS; Natural History Museum London; Hokkaido University; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of Osaka; Japan Synchrotron Radiation Research Institute; Arizona State University; Arizona State University-Tempe; University System of Maryland; University of Maryland College Park; Okayama University; University of California System; University of California Davis; National Museum of Nature and Science; Tokyo University of Science; Nanjing University; Rowan University; University of Arizona; Tohoku University; Kyushu University; Hiroshima University; Kobe University; University of Aizu; Kochi University; Graduate University for Advanced Studies - Japan; Chiba Institute of Technology; National Institutes of Natural Sciences (NINS) - Japan; National Astronomical Observatory of Japan (NAOJ); Kindai University (Kinki University); Niigata University; University of Tokyo; Rikkyo University; Universidad de la Laguna; Instituto de Astrofisica de Canarias; Kanagawa Institute Technology; University of Tokyo
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8452
• DOI: 10.1126/science.abn7850
• 发表日期: 2023-02-24
• 页码: 786-+
• 关键词: oxygen-isotope fractionation; x-ray-intensities; aqueous alteration; tagish lake; water; earth; ci; Heterogeneity; anomalies; ratios

摘要

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 degrees +/- 10 degrees C, about 5.2(-0.7)(+0.8) million (statistical) or 5.2(-2.1)(+1.6) 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 similar to 100 degrees C. The samples have a chemical composition that more closely resembles that of the Sun's photosphere than other natural samples do.