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

Author:

Okazaki Ryuji1ORCID,Marty Bernard2ORCID,Busemann Henner3ORCID,Hashizume Ko4ORCID,Gilmour Jamie D.5ORCID,Meshik Alex6ORCID,Yada Toru7ORCID,Kitajima Fumio1,Broadley Michael W.2ORCID,Byrne David2ORCID,Füri Evelyn2ORCID,Riebe My E. I.3ORCID,Krietsch Daniela3ORCID,Maden Colin3ORCID,Ishida Akizumi8ORCID,Clay Patricia5,Crowther Sarah A.5ORCID,Fawcett Lydia5ORCID,Lawton Thomas5ORCID,Pravdivtseva Olga6ORCID,Miura Yayoi N.9ORCID,Park Jisun1011ORCID,Bajo Ken-ichi12ORCID,Takano Yoshinori13ORCID,Yamada Keita14ORCID,Kawagucci Shinsuke1516ORCID,Matsui Yohei1516ORCID,Yamamoto Mizuki1ORCID,Righter Kevin17ORCID,Sakai Saburo13ORCID,Iwata Naoyoshi18ORCID,Shirai Naoki1920ORCID,Sekimoto Shun21ORCID,Inagaki Makoto21ORCID,Ebihara Mitsuru19ORCID,Yokochi Reika22ORCID,Nishiizumi Kunihiko23,Nagao Keisuke24,Lee Jong Ik24ORCID,Kano Akihiro25,Caffee Marc W.2627ORCID,Uemura Ryu28ORCID,Nakamura Tomoki8ORCID,Naraoka Hiroshi1ORCID,Noguchi Takaaki29ORCID,Yabuta Hikaru30ORCID,Yurimoto Hisayoshi12ORCID,Tachibana Shogo31ORCID,Sawada Hirotaka7ORCID,Sakamoto Kanako7ORCID,Abe Masanao732ORCID,Arakawa Masahiko33ORCID,Fujii Atsushi7ORCID,Hayakawa Masahiko7ORCID,Hirata Naoyuki33ORCID,Hirata Naru34ORCID,Honda Rie35ORCID,Honda Chikatoshi34ORCID,Hosoda Satoshi7ORCID,Iijima Yu-ichi7,Ikeda Hitoshi7ORCID,Ishiguro Masateru36ORCID,Ishihara Yoshiaki37ORCID,Iwata Takahiro7ORCID,Kawahara Kosuke7ORCID,Kikuchi Shota3839ORCID,Kitazato Kohei34ORCID,Matsumoto Koji3239ORCID,Matsuoka Moe40ORCID,Michikami Tatsuhiro41ORCID,Mimasu Yuya7ORCID,Miura Akira7ORCID,Morota Tomokatsu25ORCID,Nakazawa Satoru7ORCID,Namiki Noriyuki3239ORCID,Noda Hirotomo3239ORCID,Noguchi Rina42ORCID,Ogawa Naoko7ORCID,Ogawa Kazunori37ORCID,Okada Tatsuaki743ORCID,Okamoto Chisato33,Ono Go44ORCID,Ozaki Masanobu732ORCID,Saiki Takanao732ORCID,Sakatani Naoya45ORCID,Senshu Hiroki38ORCID,Shimaki Yuri7ORCID,Shirai Kei733ORCID,Sugita Seiji25ORCID,Takei Yuto7ORCID,Takeuchi Hiroshi7ORCID,Tanaka Satoshi7ORCID,Tatsumi Eri2546ORCID,Terui Fuyuto47ORCID,Tsukizaki Ryudo7ORCID,Wada Koji38ORCID,Yamada Manabu38ORCID,Yamada Tetsuya7ORCID,Yamamoto Yukio7ORCID,Yano Hajime732ORCID,Yokota Yasuhiro7ORCID,Yoshihara Keisuke7ORCID,Yoshikawa Makoto732ORCID,Yoshikawa Kent7ORCID,Furuya Shizuho7ORCID,Hatakeda Kentaro48ORCID,Hayashi Tasuku7ORCID,Hitomi Yuya48ORCID,Kumagai Kazuya48,Miyazaki Akiko7ORCID,Nakato Aiko7ORCID,Nishimura Masahiro7ORCID,Soejima Hiromichi48ORCID,Iwamae Ayako48ORCID,Yamamoto Daiki749ORCID,Yogata Kasumi7ORCID,Yoshitake Miwa7ORCID,Fukai Ryota7ORCID,Usui Tomohiro7ORCID,Connolly Harold C.50ORCID,Lauretta Dante51ORCID,Watanabe Sei-ichiro28ORCID,Tsuda Yuichi7ORCID

Affiliation:

1. Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan.

2. Université de Lorraine, CNRS, CRPG, F-54000 Nancy, France.

3. Institute of Geochemistry and Petrology, Eidgenössische Technische Hochschule Zürich, 8092 Zürich, Switzerland.

4. Faculty of Science, Ibaraki University, Mito 310-8512, Japan.

5. Department of Earth and Environmental Sciences, The University of Manchester, Manchester M13 9PL, UK.

6. Department of Physics, Washington University in St. Louis, St. Louis, MO 63130, USA.

7. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.

8. Department of Earth Science, Tohoku University, Sendai 980-8578, Japan.

9. Earthquake Research Institute, The University of Tokyo, Tokyo 113-0032, Japan.

10. Department of Physical Sciences, Kingsborough Community College, The City University of New York, Brooklyn, NY 11235, USA.

11. Department of Earth and Planetary Sciences, American Museum of Natural History, New York, NY 10024, USA.

12. Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060-0810, Japan.

13. Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka 237-0061, Japan.

14. Department of Chemical Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8503, Japan.

15. Research Institute for Global Change, JAMSTEC, Yokosuka 237-0061, Japan.

16. Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), JAMSTEC, Yokosuka 237-0061, Japan.

17. Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, TX 77058, USA.

18. Faculty of Science, Yamagata University, Yamagata 990-8560, Japan.

19. Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji 192-0397, Japan.

20. Department of Chemistry, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-1293, Japan.

21. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan.

22. Department of the Geophysical Sciences, The University of Chicago, Chicago, IL 60637, USA.

23. Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA.

24. Division of Earth Sciences, Korea Polar Research Institute, Incheon 21990, Korea.

25. School of Science, The University of Tokyo, Tokyo 113-0033, Japan.

26. Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA.

27. Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA.

28. Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan.

29. Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan.

30. Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.

31. UTokyo Organization for Planetary and Space Science, The University of Tokyo, Tokyo 113-0033, Japan.

32. Department of Space and Astronautical Science, The Graduate University for Advanced Studies, Hayama 240-0193, Japan.

33. Department of Planetology, Kobe University, Kobe 657-8501, Japan.

34. Aizu Research Cluster for Space Science, University of Aizu, Aizu-Wakamatsu 965-8580, Japan.

35. Center of Data Science, Ehime University, Matsuyama 790-8577, Japan.

36. Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea.

37. JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan.

38. Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.

39. National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.

40. Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8567, Japan.

41. Faculty of Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan.

42. Faculty of Science, Niigata University, Niigata 950-2181, Japan.

43. Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.

44. Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan.

45. Department of Physics, Rikkyo University, Tokyo 171-8501, Japan.

46. Instituto de Astrofísica de Canarias, University of La Laguna, 38205 La Laguna, Santa Cruz de Tenerife, Spain.

47. Department of Mechanical Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan.

48. Marine Works Japan Ltd., Yokosuka 237-0063, Japan.

49. Department of Earth and Planetary Science, Tokyo Institute of Technology, Ookayama, Tokyo 152-8550, Japan.

50. Department of Geology, School of Earth and Environment, Rowan University, Glassboro, NJ 08028, USA.

51. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.

Abstract

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 ~5 million year exposure, and from implanted solar wind record the recent irradiation history of Ryugu after it migrated to its current orbit.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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