Oxygen Isotopic Compositions of Asteroidal Materials Returned from Itokawa by the Hayabusa Mission | Zendy

Hisayoshi Yurimoto | Zendy; Kenichi Abe | Zendy; Masanao Abe | Zendy; M. Ebihara | Zendy; Akio Fujimura | Zendy; Minako Hashiguchi | Zendy; K. Hashizume | Zendy; T. R. Ireland | Zendy; Shoichi Itoh | Zendy; Juri Katayama | Zendy; Chizu Kato | Zendy; Jun’ichiro Kawaguchi | Zendy; Noriyuki Kawasaki | Zendy; F. Kitajima | Zendy; Sachio Kobayashi | Zendy; Tatsuji Meike | Zendy; Toshifumi Mukai | Zendy; Keisuke Nagao | Zendy; Tomoki Nakamura | Zendy; Hiroshi Naraoka | Zendy; T. Noguchi | Zendy; Ryuji Okazaki | Zendy; Changkun Park | Zendy; Naoya Sakamoto | Zendy; Yusuke Seto | Zendy; Masashi Takei | Zendy; A. Tsuchiyama | Zendy; Masayuki Uesugi | Zendy; Shigeyuki Wakaki | Zendy; Toru Yada | Zendy; Kosuke Yamamoto | Zendy; Makoto Yoshikawa | Zendy; M. E. Zolensky | Zendy

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Oxygen Isotopic Compositions of Asteroidal Materials Returned from Itokawa by the Hayabusa Mission

Author(s) -

Hisayoshi Yurimoto,

Kenichi Abe,

Masanao Abe,

M. Ebihara,

Akio Fujimura,

Minako Hashiguchi,

K. Hashizume,

T. R. Ireland,

Shoichi Itoh,

Juri Katayama,

Chizu Kato,

Jun’ichiro Kawaguchi,

Noriyuki Kawasaki,

F. Kitajima,

Sachio Kobayashi,

Tatsuji Meike,

Toshifumi Mukai,

Keisuke Nagao,

Tomoki Nakamura,

Hiroshi Naraoka,

T. Noguchi,

Ryuji Okazaki,

Changkun Park,

Naoya Sakamoto,

Yusuke Seto,

Masashi Takei,

A. Tsuchiyama,

Masayuki Uesugi,

Shigeyuki Wakaki,

Toru Yada,

Kosuke Yamamoto,

Makoto Yoshikawa,

M. E. Zolensky

Publication year - 2011

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1207776

Subject(s) - chondrite , asteroid , meteorite , astrobiology , isotopes of oxygen , parent body , asteroid belt , solar system , oxygen , formation and evolution of the solar system , geochemistry , carbonaceous chondrite , geology , chemistry , physics , organic chemistry

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 (16)O 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.

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