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

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Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites
Science ( IF 44.7 ) Pub Date : 2022-06-09 , DOI: 10.1126/science.abn7850
Tetsuya Yokoyama ₁ , Kazuhide Nagashima ₂ , Izumi Nakai ₃ , Edward D. Young ₄ , Yoshinari Abe ₅ , Jérôme Aléon ₆ , Conel M. O’D. Alexander ₇ , Sachiko Amari ₈ , Yuri Amelin ₉ , Ken-ichi Bajo ₁₀ , Martin Bizzarro ₁₁ , Audrey Bouvier ₁₂ , Richard W. Carlson ₇ , Marc Chaussidon ₁₃ , Byeon-Gak Choi ₁₄ , Nicolas Dauphas ₁₅ , Andrew M. Davis ₁₅ , Tommaso Di Rocco ₁₆ , Wataru Fujiya ₁₇ , Ryota Fukai ₁₈ , Ikshu Gautam ₁ , Makiko K. Haba ₁ , Yuki Hibiya ₁₉ , Hiroshi Hidaka ₂₀ , Hisashi Homma ₂₁ , Peter Hoppe ₂₂ , Gary R. Huss ₂ , Kiyohiro Ichida ₂₃ , Tsuyoshi Iizuka ₂₄ , Trevor R. Ireland ₂₅ , Akira Ishikawa ₁ , Motoo Ito ₂₆ , Shoichi Itoh ₂₇ , Noriyuki Kawasaki ₁₀ , Noriko T. Kita ₂₈ , Kouki Kitajima ₂₈ , Thorsten Kleine ₂₉ , Shintaro Komatani ₂₃ , Alexander N. Krot ₂ , Ming-Chang Liu ₄ , Yuki Masuda ₁ , Kevin D. McKeegan ₄ , Mayu Morita ₂₃ , Kazuko Motomura ₃₀ , Frédéric Moynier ₁₃ , Ann Nguyen ₃₁ , Larry Nittler ₇ , Morihiko Onose ₂₃ , Andreas Pack ₁₆ , Changkun Park ₃₂ , Laurette Piani ₃₃ , Liping Qin ₃₄ , Sara S. Russell ₃₅ , Naoya Sakamoto ₃₆ , Maria Schönbächler ₃₇ , Lauren Tafla ₄ , Haolan Tang ₄ , Kentaro Terada ₃₈ , Yasuko Terada ₃₉ , Tomohiro Usui ₁₈ , Sohei Wada ₁₀ , Meenakshi Wadhwa ₄₀ , Richard J. Walker ₄₁ , Katsuyuki Yamashita ₄₂ , Qing-Zhu Yin ₄₃ , Shigekazu Yoneda ₄₄ , Hiroharu Yui ₄₅ , Ai-Cheng Zhang ₄₆ , Harold C. Connolly ₄₇ , Dante S. Lauretta ₄₈ , Tomoki Nakamura ₄₉ , Hiroshi Naraoka ₅₀ , Takaaki Noguchi ₂₇ , Ryuji Okazaki ₅₀ , Kanako Sakamoto ₁₈ , Hikaru Yabuta ₅₁ , Masanao Abe ₁₈ , Masahiko Arakawa ₅₂ , Atsushi Fujii ₁₈ , Masahiko Hayakawa ₁₈ , Naoyuki Hirata ₅₂ , Naru Hirata ₅₃ , Rie Honda ₅₄ , Chikatoshi Honda ₅₃ , Satoshi Hosoda ₁₈ , Yu-ichi Iijima ₁₈ , Hitoshi Ikeda ₁₈ , Masateru Ishiguro ₁₄ , Yoshiaki Ishihara ₁₈ , Takahiro Iwata _{18,

55} , Kosuke Kawahara ₁₈ , Shota Kikuchi ₅₆ , Kohei Kitazato ₅₃ , Koji Matsumoto ₅₇ , Moe Matsuoka ₁₈ , Tatsuhiro Michikami ₅₈ , Yuya Mimasu ₁₈ , Akira Miura ₁₈ , Tomokatsu Morota ₂₄ , Satoru Nakazawa ₁₈ , Noriyuki Namiki ₅₇ , Hirotomo Noda ₅₇ , Rina Noguchi ₅₉ , Naoko Ogawa ₁₈ , Kazunori Ogawa ₁₈ , Tatsuaki Okada _{18,

60} , Chisato Okamoto ₅₂ , Go Ono ₁₈ , Masanobu Ozaki _{18,

55} , Takanao Saiki ₁₈ , Naoya Sakatani ₆₁ , Hirotaka Sawada ₁₈ , Hiroki Senshu ₅₆ , Yuri Shimaki ₁₈ , Kei Shirai ₁₈ , Seiji Sugita ₂₄ , Yuto Takei ₁₈ , Hiroshi Takeuchi ₁₈ , Satoshi Tanaka ₁₈ , Eri Tatsumi ₆₂ , Fuyuto Terui ₆₃ , Yuichi Tsuda ₁₈ , Ryudo Tsukizaki ₁₈ , Koji Wada ₅₆ , Sei-ichiro Watanabe ₂₀ , Manabu Yamada ₅₆ , Tetsuya Yamada ₁₈ , Yukio Yamamoto ₁₈ , Hajime Yano ₁₈ , Yasuhiro Yokota ₁₈ , Keisuke Yoshihara ₁₈ , Makoto Yoshikawa ₁₈ , Kent Yoshikawa ₁₈ , Shizuho Furuya ₁₈ , Kentaro Hatakeda ₆₄ , Tasuku Hayashi ₁₈ , Yuya Hitomi ₆₄ , Kazuya Kumagai ₆₄ , Akiko Miyazaki ₁₈ , Aiko Nakato ₁₈ , Masahiro Nishimura ₁₈ , Hiromichi Soejima ₆₄ , Ayako Suzuki ₆₄ , Toru Yada ₁₈ , Daiki Yamamoto ₁₈ , Kasumi Yogata ₁₈ , Miwa Yoshitake ₁₈ , Shogo Tachibana ₆₅ , Hisayoshi Yurimoto _{10,

36}

Affiliation

Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan.
Hawai’i Institute of Geophysics and Planetology, University of Hawai’i at Mānoa, Honolulu, HI 96822, USA.
Department of Applied Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan.
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA.
Graduate School of Engineering Materials Science and Engineering, Tokyo Denki University, Tokyo 120-8551, Japan.
Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Museum National d’Histoire Naturelle, Centre National de la Recherche Scientifique Unité Mixte de Recherche 7590, Institut de recherche pour le développement, 75005 Paris, France.
Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA.
McDonnell Center for the Space Sciences and Physics Department, Washington University, St. Louis, MO 63130, USA.
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, GD 510640, China.
Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan.
Centre for Star and Planet Formation, Globe Institute, University of Copenhagen, K 1350 Copenhagen, Denmark.
Bayerisches Geoinstitut, Universität Bayreuth, 95447 Bayreuth, Germany.
Université de Paris, Institut de physique du globe de Paris, Centre National de la Recherche Scientifique, 75005 Paris, France.
Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea.
Department of the Geophysical Sciences and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA.
Faculty of Geosciences and Geography, University of Göttingen, D-37077 Göttingen, Germany.
Faculty of Science, Ibaraki University, Mito 310-8512, Japan.
Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.
Department of General Systems Studies, University of Tokyo, Tokyo 153-0041, Japan.
Department of Earth and Planetary Sciences, Nagoya University, Nagoya 464-8601, Japan.
Osaka Application Laboratory, Rigaku Corporation, Osaka 569-1146, Japan.
Max Planck Institute for Chemistry, Mainz 55128, Germany.
Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan.
Department of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan.
School of Earth and Environmental Sciences, University of Queensland, St Lucia, QLD 4072, Australia.
Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, Kochi 783-8502, Japan.
Department of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan.
Department of Geoscience, University of Wisconsin, Madison, WI 53706, USA.
Max Planck Institute for Solar System Research, 37077 Göttingen, Germany.
Thermal Analysis Division, Rigaku Corporation, Tokyo 196-8666, Japan.
Astromaterials Research and Exploration Science Division, National Aeronautics and Space Administration Johnson Space Center, Houston, TX 77058, USA.
Division of Earth-System Sciences, Korea Polar Research Institute, Incheon 21990, Korea.
Centre de Recherches Pétrographiques et Géochimiques, Centre National de la Recherche Scientifique–Université de Lorraine, 54500 Nancy, France.
School of Earth and Space Sciences, University of Science and Technology of China, Anhui 230026, China.
Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK.
Isotope Imaging Laboratory, Hokkaido University, Sapporo 001-0021, Japan.
Institute for Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland.
Department of Earth and Space Science, Osaka University, Osaka 560-0043, Japan.
Spectroscopy and Imaging Division, Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan.
School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA.
Department of Geology, University of Maryland, College Park, MD 20742, USA.
Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA.
Department of Science and Engineering, National Museum of Nature and Science, Tsukuba 305-0005, Japan.
Department of Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan.
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China.
Department of Geology, School of Earth and Environment, Rowan University, Glassboro, NJ 08028, USA.
Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.
Department of Earth Science, Tohoku University, Sendai 980-8578, Japan.
Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan.
Earth and Planetary Systems Science Program, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
Graduate School of Science, Kobe University, Kobe 657-8501, Japan.
Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan.
Faculty of Science and Technology, Kochi University, Kochi 780-8520, Japan.
Graduate University for Advanced Studies, Sokendai, Kanagawa 240-0193, Japan.
Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.
National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.
Faculty of Engineering, Kinki University, Higashi-Hiroshima 739-2116, Japan.
Academic Assembly Institute of Science and Technology, Niigata University, Niigata 950-2181, Japan.
Department of Chemistry, University of Tokyo, Tokyo 113-0033, Japan.
College of Science Department of Physics, Rikkyo University, Tokyo 171-8501, Japan.
Instituto de Astrofísica de Canarias, University of La Laguna, Tenerife, Spain.
Graduate School of Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan.
Marine Works Japan Ltd., Yokosuka 237-0063, Japan.
UTokyo Organization for Planetary and Space Science, University of Tokyo, Tokyo 113-0033, Japan.

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 measure the mineralogy, bulk chemical and isotopic compositions of Ryugu samples. They are mainly composed of materials similar to 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, 5.2 − 0.8 + 0.7 (Stat.) − 2.1 + 1.6 (Syst.) million years after 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 the Sun’s photosphere than other natural samples do.

中文翻译：

从小行星 Ryugu 返回的样本类似于 Ivuna 型碳质陨石

碳质陨石被认为是 C 型（碳质）小行星的碎片。隼鸟 2 号宇宙飞船取回了 C 型小行星 (162173) Ryugu 的样本。我们测量 Ryugu 样品的矿物学、整体化学和同位素组成。它们主要由类似于碳质球粒陨石的材料组成，特别是 CI（Ivuna 型）组。样品主要由在母星子上的含水流体中形成的矿物质组成。原生矿物在 37 ± 10°C 的温度下被流体改变， 5.2 - 0.8 + 0.7 （统计） - 2.1 + 1.6 （系统）太阳系中第一个固体形成后的数百万年。在水性改变之后，Ryugu 样品可能从未被加热到约 100°C 以上。这些样品的化学成分比其他天然样品更接近太阳的光球层。

更新日期：2022-06-09

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