Date14th, Nov 2023

Summary:

The observed variations in chromium (Cr) isotope ratios in the Ryugu asteroid samples collected by Hayabusa2 likely resulted from elemental redistribution of slightly soluble Cr by water within the parent body, reveals a multinational study led by researchers from Tokyo Tech. The results provide useful insights for expanding our understanding of the origin and evolution of materials in our solar system.

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Authors :

Tetsuya Yokoyama1,* Meenakshi Wadhwa2, Tsuyoshi Iizuka3, Vinai Rai2, Ikshu Gautam1, Yuki Hibiya4, Yuki Masuda1, Makiko K. Haba1, Ryota Fukai5, Rebekah Hines2, Nicole Phelan2, Yoshinari Abe6, Jérôme Aléon7, Conel Alexander8, Sachiko Amari9, 10, Yuri Amelin11, Ken-ichi Bajo12, Martin Bizzarro13, Audrey Bouvier14, Richard W. Carlson8, Marc Chaussidon15, Byeon-Gak Choi16, Nicolas Dauphas17, Andrew M. Davis17, Tommaso Di Rocco18, Wataru Fujiya19, Hiroshi Hidaka20, Hisashi Homma21, Peter Hoppe22, Gary R. Huss23, Kiyohiro Ichida24, Trevor Ireland25, Akira Ishikawa1, Shoichi Itoh26, Noriyuki Kawasaki12, Noriko T. Kita27, Koki Kitajima27, Thorsten Kleine28, Shintaro Komatani24, Alexander N. Krot23, Ming-Chang Liu29, Kevin D. McKeegan29, Mayu Morita24, Kazuko Motomura30, Frédéric Moynier15, Izumi Nakai31, Kazuhide Nagashima23, Ann Nguyen32, Larry Nittler8, Morihiko Onose24, Andreas Pack18, Changkun Park33, Laurette Piani34, Liping Qin35, Sara Russell36, Naoya Sakamoto37, Maria Schönbächler38, Lauren Tafla29, Haolan Tang35, Kentaro Terada39, Yasuko Terada40, Tomohiro Usui5, Sohei Wada12, Richard J. Walker41, Katsuyuki Yamashita42, Qing-Zhu Yin43, Shigekazu Yoneda44, Edward D. Young29, Hiroharu Yui45, Ai-Cheng Zhang46, Tomoki Nakamura47, Hiroshi Naraoka48, Takaaki Noguchi26, Ryuji Okazaki48, Kanako Sakamoto5, Hikaru Yabuta49, Masanao Abe5, Akiko Miyazaki5, Aiko Nakato5, Masahiro Nishimura5, Tatsuaki Okada5, Toru Yada5, Kasumi Yogata5, Satoru Nakazawa5, Takanao Saiki5, Satoshi Tanaka5, Fuyuto Terui50, Yuichi Tsuda5, Sei-ichiro Watanabe20, Makoto Yoshikawa5, Shogo Tachibana51, Hisayoshi Yurimoto12

Affiliations :

1 Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo, Japan.

2 School of Earth and Space Exploration, Arizona State University, AZ, USA.

3 Department of Earth and Planetary Science, The University of Tokyo, Tokyo, Japan.

4 Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.

5 ISAS/JSEC, JAXA, Sagamihara, Japan.

6 Graduate School of Engineering, Tokyo Denki University, Tokyo, Japan

7 Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Museum National d'Histoire Naturelle, Paris, France.

8 Earth and Planets Laboratory, Carnegie Institution for Science, DC, USA.

9 McDonnell Center for the Space Sciences and Physics Department, Washington University, MO, USA.

10 Geochemical Research Center, The University of Tokyo, Tokyo, Japan.

11 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China.

12 Department of Natural History Sciences, Hokkaido University, Sapporo, Japan.

13 Centre for Star and Planet Formation, GLOBE Institute, University of Copenhagen, Copenhagen, Denmark.

14 Bayerisches Geoinstitut, Universität Bayreuth, Bayreuth, Germany.

15 Université Paris Cité, Institut de physique du globe de Paris, CNRS, Paris, France.

16 Department of Earth Science Education, Seoul National University, Seoul, Republic of Korea.

17 Department of the Geophysical Sciences and Enrico Fermi Institute, The University of Chicago, Chicago, USA.

18 Faculty of Geosciences and Geography, University of Göttingen, Göttingen, Germany.

19 Faculty of Science, Ibaraki University, Mito, Japan.

20 Department of Earth and Planetary Sciences, Nagoya University, Nagoya, Japan.

21 Osaka Application Laboratory, SBUWDX, Rigaku Corporation, Osaka, Japan.

22 Max Planck Institute for Chemistry, Mainz, Germany.

23 Hawai‘i Institute of Geophysics and Planetology, University of Hawai‘i at Mānoa, Honolulu, USA.

24 Analytical Technology, Horiba Techno Service Co., Ltd., Kyoto, Japan.

25 School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Australia.

26 Division of Earth and Planetary Sciences, Kyoto University, Kyoto, Japan.

27 Department of Geoscience, University of Wisconsin-Madison, WI, USA.

28 Max Planck Institute for Solar System Research, Göttingen, Germany.

29 Department of Earth, Planetary, and Space Sciences, UCLA, CA, USA.

30 Thermal Analysis, Rigaku Corporation, Tokyo, Japan.

31 Department of Applied Chemistry, Tokyo University of Science, Tokyo, Japan.

32 Astromaterials Research and Exploration Science, NASA Johnson Space Center, TX, USA.

33 Earth-System Sciences, Korea Polar Research Institute; Incheon, Korea.

34 Centre de Recherches Pétrographiques et Géochimiques, CNRS - Université de Lorraine, Nancy, France.

35 CAS Key Laboratory of Crust-Mantle Materials and Environments, University of Science and Technology of China, School of Earth and Space Sciences, Anhui, China.

36 Department of Earth Sciences, Natural History Museum, London, UK.

37 Isotope Imaging Laboratory, Creative Research Institution, Hokkaido University, Sapporo, Japan.

38 Institute for Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland.

39 Department of Earth and Space Science, Osaka University, Osaka, Japan.

40 Spectroscopy and Imaging, Japan Synchrotron Radiation Research Institute, Hyogo, Japan.

41 Department of Geology, University of Maryland, MD, USA.

42 Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.

43 Department of Earth and Planetary Sciences, University of California, CA, USA.

44 Department of Science and Engineering, National Museum of Nature and Science, Tsukuba, Japan.

45 Department of Chemistry, Tokyo University of Science, Tokyo, Japan.

46 School of Earth Sciences and Engineering, Nanjing University, Nanjing, China.

47 Department of Earth Science, Tohoku University, Sendai, Japan.

48 Department of Earth and Planetary Sciences, Kyushu University, Fukuoka, Japan.

49 Earth and Planetary Systems Science Program, Hiroshima University, Higashi-Hiroshima, Japan.

50 Kanagawa Institute of Technology, Atsugi, Japan.

51 UTokyo Organization for Planetary and Space Science, University of Tokyo, Tokyo, Japan.