On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective.

Autor: Nakamura E; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Kobayashi K; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Tanaka R; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Kunihiro T; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Kitagawa H; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Potiszil C; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Ota T; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Sakaguchi C; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Yamanaka M; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Ratnayake DM; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Tripathi H; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Kumar R; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Avramescu ML; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Tsuchida H; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Yachi Y; The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University., Miura H; Department of Information and Basic Science, Nagoya City University., Abe M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; The Graduate University for Advanced Studies (SOKENDAI)., Fukai R; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Furuya S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Graduate School of Science, The University of Tokyo., Hatakeda K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Hayashi T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Hitomi Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Marine Works Japan, Ltd., Kumagai K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Marine Works Japan, Ltd., Miyazaki A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Nakato A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Nishimura M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Okada T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Graduate School of Science, The University of Tokyo., Soejima H; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Marine Works Japan, Ltd., Sugita S; Graduate School of Science, The University of Tokyo.; Planetary Exploration Research Center (PERC), Chiba Institute of Technology., Suzuki A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Marine Works Japan, Ltd., Usui T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yada T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yamamoto D; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yogata K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yoshitake M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Arakawa M; Graduate School of Science, Kobe University., Fujii A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Hayakawa M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Hirata N; Graduate School of Science, Kobe University., Hirata N; Faculty of Computer Science and Engineering, The University of Aizu., Honda R; Faculty of Science and Technology, Kochi University., Honda C; Faculty of Computer Science and Engineering, The University of Aizu., Hosoda S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Iijima YI; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Ikeda H; Research and Development Directorate, JAXA., Ishiguro M; Department of Physics and Astronomy, Seoul National University., Ishihara Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Iwata T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; The Graduate University for Advanced Studies (SOKENDAI)., Kawahara K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Kikuchi S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Planetary Exploration Research Center (PERC), Chiba Institute of Technology., Kitazato K; Faculty of Computer Science and Engineering, The University of Aizu., Matsumoto K; National Astronomical Observatory of Japan., Matsuoka M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Observatoire de Paris., Michikami T; Faculty of Engineering, Kindai University., Mimasu Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Miura A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Morota T; Graduate School of Environmental Studies, Nagoya University., Nakazawa S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Namiki N; National Astronomical Observatory of Japan., Noda H; National Astronomical Observatory of Japan., Noguchi R; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Faculty of Science, Niigata University., Ogawa N; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; JAXA Space Exploration Center, Japan Aerospace Exploration Agency., Ogawa K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Okamoto C; Graduate School of Science, Kobe University., Ono G; Research and Development Directorate, JAXA., Ozaki M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Saiki T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Sakatani N; College of Science, Rikkyo University., Sawada H; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Senshu H; Planetary Exploration Research Center (PERC), Chiba Institute of Technology., Shimaki Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Shirai K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Graduate School of Science, Kobe University., Takei Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Takeuchi H; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Tanaka S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; The Graduate University for Advanced Studies (SOKENDAI).; The University of Tokyo., Tatsumi E; Graduate School of Science, The University of Tokyo.; Instituto de Astrofisica de Canarias, University of La Laguna., Terui F; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Faculty of Engineering, Kanagawa Institute of Technology., Tsukizaki R; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Wada K; Planetary Exploration Research Center (PERC), Chiba Institute of Technology., Yamada M; Planetary Exploration Research Center (PERC), Chiba Institute of Technology., Yamada T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yamamoto Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yano H; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yokota Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yoshihara K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Yoshikawa M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; The Graduate University for Advanced Studies (SOKENDAI)., Yoshikawa K; Research and Development Directorate, JAXA., Fujimoto M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency., Watanabe SI; Graduate School of Environmental Studies, Nagoya University., Tsuda Y; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency.; Graduate School of Science, The University of Tokyo.
Jazyk: angličtina
Zdroj: Proceedings of the Japan Academy. Series B, Physical and biological sciences [Proc Jpn Acad Ser B Phys Biol Sci] 2022; Vol. 98 (6), pp. 227-282.
DOI: 10.2183/pjab.98.015
Abstrakt: Presented here are the observations and interpretations from a comprehensive analysis of 16 representative particles returned from the C-type asteroid Ryugu by the Hayabusa2 mission. On average Ryugu particles consist of 50% phyllosilicate matrix, 41% porosity and 9% minor phases, including organic matter. The abundances of 70 elements from the particles are in close agreement with those of CI chondrites. Bulk Ryugu particles show higher δ 18 O, Δ 17 O, and ε 54 Cr values than CI chondrites. As such, Ryugu sampled the most primitive and least-thermally processed protosolar nebula reservoirs. Such a finding is consistent with multi-scale H-C-N isotopic compositions that are compatible with an origin for Ryugu organic matter within both the protosolar nebula and the interstellar medium. The analytical data obtained here, suggests that complex soluble organic matter formed during aqueous alteration on the Ryugu progenitor planetesimal (several 10's of km), <2.6 Myr after CAI formation. Subsequently, the Ryugu progenitor planetesimal was fragmented and evolved into the current asteroid Ryugu through sublimation.
Databáze: MEDLINE