Ryugu’s nucleosynthetic heritage from the outskirts of the Solar System

Author:

Hopp Timo1ORCID,Dauphas Nicolas1ORCID,Abe Yoshinari2ORCID,Aléon Jérôme3ORCID,O’D. Alexander Conel M.4ORCID,Amari Sachiko56ORCID,Amelin Yuri7ORCID,Bajo Ken-ichi8ORCID,Bizzarro Martin9ORCID,Bouvier Audrey10ORCID,Carlson Richard W.4ORCID,Chaussidon Marc11ORCID,Choi Byeon-Gak12ORCID,Davis Andrew M.1ORCID,Di Rocco Tommaso13ORCID,Fujiya Wataru14ORCID,Fukai Ryota15ORCID,Gautam Ikshu16ORCID,Haba Makiko K.16ORCID,Hibiya Yuki1718ORCID,Hidaka Hiroshi19ORCID,Homma Hisashi20ORCID,Hoppe Peter21ORCID,Huss Gary R.22ORCID,Ichida Kiyohiro23ORCID,Iizuka Tsuyoshi24ORCID,Ireland Trevor R.25ORCID,Ishikawa Akira16ORCID,Ito Motoo26ORCID,Itoh Shoichi27ORCID,Kawasaki Noriyuki8ORCID,Kita Noriko T.28ORCID,Kitajima Kouki28ORCID,Kleine Thorsten29ORCID,Komatani Shintaro23ORCID,Krot Alexander N.22ORCID,Liu Ming-Chang3031ORCID,Masuda Yuki16ORCID,McKeegan Kevin D.30ORCID,Morita Mayu23ORCID,Motomura Kazuko32ORCID,Moynier Frédéric11ORCID,Nakai Izumi32ORCID,Nagashima Kazuhide22ORCID,Nesvorný David33ORCID,Nguyen Ann34ORCID,Nittler Larry435ORCID,Onose Morihiko23ORCID,Pack Andreas13ORCID,Park Changkun36ORCID,Piani Laurette37ORCID,Qin Liping38,Russell Sara S.39ORCID,Sakamoto Naoya40ORCID,Schönbächler Maria41ORCID,Tafla Lauren30,Tang Haolan3042,Terada Kentaro43ORCID,Terada Yasuko44ORCID,Usui Tomohiro15ORCID,Wada Sohei8ORCID,Wadhwa Meenakshi35ORCID,Walker Richard J.45ORCID,Yamashita Katsuyuki46ORCID,Yin Qing-Zhu47ORCID,Yokoyama Tetsuya16ORCID,Yoneda Shigekazu48ORCID,Young Edward D.30ORCID,Yui Hiroharu49ORCID,Zhang Ai-Cheng50ORCID,Nakamura Tomoki51ORCID,Naraoka Hiroshi52ORCID,Noguchi Takaaki26ORCID,Okazaki Ryuji52ORCID,Sakamoto Kanako15ORCID,Yabuta Hikaru53ORCID,Abe Masanao15ORCID,Miyazaki Akiko15ORCID,Nakato Aiko15ORCID,Nishimura Masahiro15ORCID,Okada Tatsuaki15ORCID,Yada Toru15ORCID,Yogata Kasumi15ORCID,Nakazawa Satoru15ORCID,Saiki Takanao15ORCID,Tanaka Satoshi15ORCID,Terui Fuyuto54ORCID,Tsuda Yuichi15ORCID,Watanabe Sei-ichiro19ORCID,Yoshikawa Makoto15ORCID,Tachibana Shogo55ORCID,Yurimoto Hisayoshi8ORCID

Affiliation:

1. Origins Laboratory, Department of the Geophysical Sciences and Enrico Fermi Institute, The University of Chicago, Chicago, IL 60637, USA.

2. Graduate School of Engineering Materials Science and Engineering, Tokyo Denki University, Tokyo 120-8551, Japan.

3. Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Museum National d’Histoire Naturelle, CNRS UMR 7590, IRD, 75005 Paris, France.

4. Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA.

5. McDonnell Center for the Space Sciences and Physics Department, Washington University, St. Louis, MO 63130, USA.

6. Geochemical Research Center, The University of Tokyo, Tokyo 113-0033, Japan.

7. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, GD 510640, China.

8. Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan.

9. Centre for Star and Planet Formation, GLOBE Institute, University of Copenhagen, Copenhagen K 1350, Denmark.

10. Bayerisches Geoinstitut, Universität Bayreuth, Bayreuth 95447, Germany.

11. Université Paris Cité, Institut de physique du globe de Paris, CNRS, 75005 Paris, France.

12. Department of Earth Science Education, Seoul National University, Seoul 08826, Republic of Korea.

13. Faculty of Geosciences and Geography, University of Göttingen, Göttingen D-37077, Germany.

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

15. Institute of Space and Astronautical Science/JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.

16. Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan.

17. Department of General Systems Studies, The University of Tokyo, Tokyo 153-0041, Japan.

18. Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo 153-8904, Japan.

19. Department of Earth and Planetary Sciences, Nagoya University, Nagoya 464-8601, Japan.

20. Osaka Application Laboratory, SBUWDX, Rigaku Corporation, Osaka 569-1146, Japan.

21. Max Planck Institute for Chemistry, Mainz 55128, Germany.

22. Hawai‘i Institute of Geophysics and Planetology, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA.

23. Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan.

24. Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.

25. School of Earth and Environmental Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia.

26. Kochi Institute for Core Sample Research, JAMSTEC, Kochi 783-8502, Japan.

27. Department of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan.

28. Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706, USA.

29. Max Planck Institute for Solar System Research, 37077 Göttingen, Germany.

30. Department of Earth, Planetary, and Space Sciences, UCLA, Los Angeles, CA 90095, USA.

31. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.

32. Thermal Analysis, Rigaku Corporation, Tokyo 196-8666, Japan.

33. Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA.

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

35. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA.

36. Division of Earth-System Sciences, Korea Polar Research Institute, Incheon 21990, Korea.

37. Centre de Recherches Pétrographiques et Géochimiques, CNRS–Université de Lorraine, 54500 Nancy, France.

38. Deep Space Exploration Laboratory/CAS Key Laboratory of Crust-Mantle Materials and Environments, University of Science and Technology of China, Hefei 230026, China.

39. Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK.

40. Isotope Imaging Laboratory, Hokkaido University, Sapporo 001-0021, Japan.

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

42. University of Science and Technology of China, Hefei, China.

43. Department of Earth and Space Science, Osaka University, Osaka 560-0043, Japan.

44. Spectroscopy and Imaging Division, Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan.

45. Department of Geology, University of Maryland, College Park, MD 20742, USA.

46. Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.

47. Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA.

48. Department Science and Engineering, National Museum of Nature and Science, Tsukuba 305-0005, Japan.

49. Department of Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan.

50. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China.

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

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

53. Earth and Planetary Systems Science Program, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.

54. Graduate School of Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan.

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

Abstract

Little is known about the origin of the spectral diversity of asteroids and what it says about conditions in the protoplanetary disk. Here, we show that samples returned from Cb-type asteroid Ryugu have Fe isotopic anomalies indistinguishable from Ivuna-type (CI) chondrites, which are distinct from all other carbonaceous chondrites. Iron isotopes, therefore, demonstrate that Ryugu and CI chondrites formed in a reservoir that was different from the source regions of other carbonaceous asteroids. Growth and migration of the giant planets destabilized nearby planetesimals and ejected some inward to be implanted into the Main Belt. In this framework, most carbonaceous chondrites may have originated from regions around the birthplaces of Jupiter and Saturn, while the distinct isotopic composition of CI chondrites and Ryugu may reflect their formation further away in the disk, owing their presence in the inner Solar System to excitation by Uranus and Neptune.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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