Oxygen isotopic compositions of asteroidal materials returned from Itokawa by the Hayabusa mission

Hisayoshi Yurimoto, Ken Ichi Abe, Masanao Abe, Mitsuru Ebihara, Akio Fujimura, Minako Hashiguchi, Ko Hashizume, Trevor R. Ireland, Shoichi Itoh, Juri Katayama, Chizu Kato, Junichiro Kawaguchi, Noriyuki Kawasaki, Fumio Kitajima, Sachio Kobayashi, Tatsuji Meike, Toshifumi Mukai, Keisuke Nagao, Tomoki Nakamura, Hiroshi NaraokaTakaaki Noguchi, Ryuji Okazaki, Changkun Park, Naoya Sakamoto, Yusuke Seto, Masashi Takei, Akira Tsuchiyama, Masayuki Uesugi, Shigeyuki Wakaki, Toru Yada, Kosuke Yamamoto, Makoto Yoshikawa, Michael E. Zolensky

Research output: Contribution to journalArticle

108 Citations (Scopus)

Abstract

Meteorite studies suggest that each solar system object has a unique oxygen isotopic composition. Chondrites, the most primitive of meteorites, have been believed to be derived from asteroids, but oxygen isotopic compositions of asteroids themselves have not been established. We measured, using secondary ion mass spectrometry, oxygen isotopic compositions of rock particles from asteroid 25143 Itokawa returned by the Hayabusa spacecraft. Compositions of the particles are depleted in 16O relative to terrestrial materials and indicate that Itokawa, an S-type asteroid, is one of the sources of the LL or L group of equilibrated ordinary chondrites. This is a direct oxygen-isotope link between chondrites and their parent asteroid.

Original languageEnglish
Pages (from-to)1116-1119
Number of pages4
JournalScience
Volume333
Issue number6046
DOIs
Publication statusPublished - 2011 Aug 26

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Oxygen isotopic compositions of asteroidal materials returned from Itokawa by the Hayabusa mission'. Together they form a unique fingerprint.

  • Cite this

    Yurimoto, H., Abe, K. I., Abe, M., Ebihara, M., Fujimura, A., Hashiguchi, M., Hashizume, K., Ireland, T. R., Itoh, S., Katayama, J., Kato, C., Kawaguchi, J., Kawasaki, N., Kitajima, F., Kobayashi, S., Meike, T., Mukai, T., Nagao, K., Nakamura, T., ... Zolensky, M. E. (2011). Oxygen isotopic compositions of asteroidal materials returned from Itokawa by the Hayabusa mission. Science, 333(6046), 1116-1119. https://doi.org/10.1126/science.1207776