Authors
Tomoki Nakamura, M Matsumoto, K Amano, Y Enokido, ME Zolensky, T Mikouchi, H Genda, S Tanaka, MY Zolotov, K Kurosawa, S Wakita, R Hyodo, H Nagano, D Nakashima, Y Takahashi, Y Fujioka, M Kikuiri, E Kagawa, M Matsuoka, AJ Brearley, A Tsuchiyama, M Uesugi, J Matsuno, Y Kimura, M Sato, RE Milliken, E Tatsumi, S Sugita, T Hiroi, K Kitazato, D Brownlee, DJ Joswiak, M Takahashi, K Ninomiya, T Takahashi, T Osawa, K Terada, FE Brenker, BJ Tkalcec, Laszlo Vincze, R Brunetto, A Aléon-Toppani, QHS Chan, M Roskosz, J-C Viennet, P Beck, EE Alp, T Michikami, Y Nagaashi, T Tsuji, Y Ino, J Martinez, J Han, A Dolocan, RJ Bodnar, M Tanaka, H Yoshida, K Sugiyama, AJ King, K Fukushi, H Suga, S Yamashita, T Kawai, K Inoue, A Nakato, Takaaki Noguchi, F Vilas, AR Hendrix, C Jaramillo-Correa, DL Domingue, G Dominguez, Z Gainsforth, C Engrand, J Duprat, SS Russell, E Bonato, C Ma, T Kawamoto, T Wada, S Watanabe, R Endo, S Enju, L Riu, S Rubino, Pieter Tack, S Takeshita, Y Takeichi, A Takeuchi, A Takigawa, D Takir, T Tanigaki, A Taniguchi, K Tsukamoto, T Yagi, S Yamada, K Yamamoto, Y Yamashita, M Yasutake, K Uesugi, I Umegaki, I Chiu, T Ishizaki, S Okumura, E Palomba, C Pilorget, SM Potin, A Alasli, S Anada, Y Araki, N Sakatani, C Schultz, O Sekizawa, SD Sitzman, K Sugiura, M Sun, E Dartois, Ella De Pauw, Z Dionnet, Z Djouadi, G Falkenberg, R Fujita, T Fukuma, IR Gearba, K Hagiya, MY Hu, T Kato, T Kawamura, M Kimura, MK Kubo, F Langenhorst, C Lantz, B Lavina, M Lindner, J Zhao, Bart Vekemans, D Baklouti, Benjamin Bazi, F Borondics, S Nagasawa, G Nishiyama, K Nitta, J Mathurin, T Matsumoto, I Mitsukawa, H Miura, A Miyake, Y Miyake, H Yurimoto, R Okazaki, H Yabuta
Publication date
2022/9/22
Journal
Science
Volume
379
Issue
6634
Pages
eabn8671
Publisher
American Association for the Advancement of Science
Description
Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide–bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu’s parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and calcium- and aluminum-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed through aqueous alteration reactions at low temperature, high pH, and water/rock ratios of <1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate that Ryugu’s parent body formed ~2 million years after the beginning of Solar System …
Total citations
Scholar articles
T Nakamura, M Matsumoto, K Amano, Y Enokido… - Science, 2022