Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution

• 成果类型: Article
• 署名作者: Okazaki, Ryuji; Marty, Bernard; Busemann, Henner; Hashizume, Ko; Gilmour, Jamie D.; Meshik, Alex; Yada, Toru; Kitajima, Fumio; Broadley, Michael W.; Byrne, David; Fueri, Evelyn; Riebe, My E. I.; Krietsch, Daniela; Maden, Colin; Ishida, Akizumi; Clay, Patricia; Crowther, Sarah A.; Fawcett, Lydia; Lawton, Thomas; Pravdivtseva, Olga; Miura, Yayoi N.; Park, Jisun; Bajo, Ken-ichi; Takano, Yoshinori; Yamada, Keita; Kawagucci, Shinsuke; Matsui, Yohei; Yamamoto, Mizuki; Righter, Kevin; Sakai, Saburo; Iwata, Naoyoshi; Shirai, Naoki; Sekimoto, Shun; Inagaki, Makoto; Ebihara, Mitsuru; Yokochi, Reika; Nishiizumi, Kunihiko; Nagao, Keisuke; Lee, Jong Ik; Kano, Akihiro; Caffee, Marc W.; Uemura, Ryu; Nakamura, Tomoki; Naraoka, Hiroshi; Noguchi, Takaaki; Yabuta, Hikaru; Yurimoto, Hisayoshi; Tachibana, Shogo; Sawada, Hirotaka; Sakamoto, Kanako; 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; Senshu, Hiroki; Shimaki, Yuri; Shirai, Kei; Sugita, Seiji; Takei, Yuto; Takeuchi, Hiroshi; Tanaka, Satoshi; Tatsumi, Eri; Terui, Fuyuto; Tsukizaki, Ryudo; Wada, Koji; 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; Iwamae, Ayako; Yamamoto, Daiki; Yogata, Kasumi; Yoshitake, Miwa; Fukai, Ryota; Usui, Tomohiro; Connolly Jr, Harold C.; Lauretta, Dante; Watanabe, Sei-ichiro; Tsuda, Yuichi
• 署名单位: Kyushu University; Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS); Ibaraki University; University of Manchester; Washington University (WUSTL); Japan Aerospace Exploration Agency (JAXA); Institute of Space & Astronautical Science (ISAS); Tohoku University; University of Tokyo; City University of New York (CUNY) System; American Museum of Natural History (AMNH); Hokkaido University; Japan Agency for Marine-Earth Science & Technology (JAMSTEC); Institute of Science Tokyo; Tokyo Institute of Technology; Japan Agency for Marine-Earth Science & Technology (JAMSTEC); Japan Agency for Marine-Earth Science & Technology (JAMSTEC); National Aeronautics & Space Administration (NASA); NASA Johnson Space Center; Yamagata University; Tokyo Metropolitan University; Kanagawa University; Kyoto University; University of Chicago; University of California System; University of California Berkeley; Korea Polar Research Institute (KOPRI); University of Tokyo; Purdue University System; Purdue University; Purdue University System; Purdue University; Nagoya University; Kyoto University; Hiroshima University; University of Tokyo; Graduate University for Advanced Studies - Japan; Kobe University; University of Aizu; Ehime University; Seoul National University (SNU); Japan Aerospace Exploration Agency (JAXA); Chiba Institute of Technology; National Institutes of Natural Sciences (NINS) - Japan; National Astronomical Observatory of Japan (NAOJ); National Institute of Advanced Industrial Science & Technology (AIST); Kindai University (Kinki University); Niigata University; University of Tokyo; Japan Aerospace Exploration Agency (JAXA); Rikkyo University; Instituto de Astrofisica de Canarias; Universidad de la Laguna; Kanagawa Institute Technology; Institute of Science Tokyo; Tokyo Institute of Technology; Rowan University; University of Arizona
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11317
• DOI: 10.1126/science.abo0431
• 发表日期: 2023-02-24
• 页码: 788-U52
• 关键词: antarctic micrometeorites; carbonaceous chondrites; isotopic compositions; abundances; argon; solar; neon; meteorites; HISTORY; helium

摘要

The near-Earth carbonaceous asteroid (162173) Ryugu is expected to contain volatile chemical species that could provide information on the origin of Earth's volatiles. Samples of Ryugu were retrieved by the Hayabusa2 spacecraft. We measured noble gas and nitrogen isotopes in Ryugu samples and found that they are dominated by presolar and primordial components, incorporated during Solar System formation. Noble gas concentrations are higher than those in Ivuna-type carbonaceous (CI) chondrite meteorites. Several host phases of isotopically distinct nitrogen have different abundances among the samples. Our measurements support a close relationship between Ryugu and CI chondrites. Noble gases produced by galactic cosmic rays, indicating a similar to 5 million year exposure, and from implanted solar wind record the recent irradiation history of Ryugu after it migrated to its current orbit.