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  Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2

Kawasaki, N., Nagashima, K., Sakamoto, N., Matsumoto, T., Bajo, K.-i., Wada, S., et al. (2022). Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2. Science Advances, 8, eade2067. doi:10.1126/sciadv.ade2067.

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https://ui.adsabs.harvard.edu/abs/2022SciA....8E2067K (beliebiger Volltext)
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Kawasaki, Noriyuki, Autor
Nagashima, Kazuhide, Autor
Sakamoto, Naoya, Autor
Matsumoto, Toru, Autor
Bajo, Ken-ichi, Autor
Wada, Sohei, Autor
Igami, Yohei, Autor
Miyake, Akira, Autor
Noguchi, Takaaki, Autor
Yamamoto, Daiki, Autor
Russell, Sara S., Autor
Abe, Yoshinari, Autor
Aléon, Jérôme, Autor
Alexander, Conel M. O. 'D., Autor
Amari, Sachiko, Autor
Amelin, Yuri, Autor
Bizzarro, Martin, Autor
Bouvier, Audrey, Autor
Carlson, Richard W., Autor
Chaussidon, Marc, Autor
Choi, Byeon-Gak, AutorDauphas, Nicolas, AutorDavis, Andrew M., AutorDi Rocco, Tommaso, AutorFujiya, Wataru, AutorFukai, Ryota, AutorGautam, Ikshu, AutorHaba, Makiko K., AutorHibiya, Yuki, AutorHidaka, Hiroshi, AutorHomma, Hisashi, AutorHoppe, Peter, AutorHuss, Gary R., AutorIchida, Kiyohiro, AutorIizuka, Tsuyoshi, AutorIreland, Trevor R., AutorIshikawa, Akira, AutorIto, Motoo, AutorItoh, Shoichi, AutorKita, Noriko T., AutorKitajima, Kouki, AutorKleine, Thorsten1, Autor           Komatani, Shintaro, AutorKrot, Alexander N., AutorLiu, Ming-Chang, AutorMasuda, Yuki, AutorMcKeegan, Kevin D., AutorMorita, Mayu, AutorMotomura, Kazuko, AutorMoynier, Frédéric, AutorNakai, Izumi, AutorNguyen, Ann, AutorNittler, Larry, AutorOnose, Morihiko, AutorPack, Andreas, AutorPark, Changkun, AutorPiani, Laurette, AutorQin, Liping, AutorSchönbächler, Maria, AutorTafla, Lauren, AutorTang, Haolan, AutorTerada, Kentaro, AutorTerada, Yasuko, AutorUsui, Tomohiro, AutorWadhwa, Meenakshi, AutorWalker, Richard J., AutorYamashita, Katsuyuki, AutorYin, Qing-Zhu, AutorYokoyama, Tetsuya, AutorYoneda, Shigekazu, AutorYoung, Edward D., AutorYui, Hiroharu, AutorZhang, Ai-Cheng, AutorNakamura, Tomoki, AutorNaraoka, Hiroshi, AutorOkazaki, Ryuji, AutorSakamoto, Kanako, AutorYabuta, Hikaru, AutorAbe, Masanao, AutorMiyazaki, Akiko, AutorNakato, Aiko, AutorNishimura, Masahiro, AutorOkada, Tatsuaki, AutorYada, Toru, AutorYogata, Kasumi, AutorNakazawa, Satoru, AutorSaiki, Takanao, AutorTanaka, Satoshi, AutorTerui, Fuyuto, AutorTsuda, Yuichi, AutorWatanabe, Sei-ichiro, AutorYoshikawa, Makoto, AutorTachibana, Shogo, AutorYurimoto, Hisayoshi, Autor mehr..
Affiliations:
1Planetary Science Department, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Zusammenfassung: The extraterrestrial materials returned from asteroid (162173) Ryugu consist predominantly of low-temperature aqueously formed secondary minerals and are chemically and mineralogically similar to CI (Ivuna-type) carbonaceous chondrites. Here, we show that high-temperature anhydrous primary minerals in Ryugu and CI chondrites exhibit a bimodal distribution of oxygen isotopic compositions: 16 O-rich (associated with refractory inclusions) and 16 O-poor (associated with chondrules). Both the 16 O-rich and 16 O-poor minerals probably formed in the inner solar protoplanetary disk and were subsequently transported outward. The abundance ratios of the 16 O-rich to 16 O-poor minerals in Ryugu and CI chondrites are higher than in other carbonaceous chondrite groups but are similar to that of comet 81P/Wild2, suggesting that Ryugu and CI chondrites accreted in the outer Solar System closer to the accretion region of comets. C-type asteroid Ryugu formed in the outer Solar System close to the accretion region of 81P/Wild2 comet.

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 Datum: 2022
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1126/sciadv.ade2067
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Titel: Science Advances
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 8 Artikelnummer: - Start- / Endseite: eade2067 Identifikator: -