Non-chondritic oxygen isotopic component of metals in a noble-gas-rich chondrite : vestige of stellar wind from the protosun?

Fujimoto, Kumiko; Itoh, Shoichi; Ebata, Shingo et al.

Geochemical Journal, 2009, 43, e11-e15

Permalink : https://hdl.handle.net/2115/45262

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アクセス権	open access
URI	https://hdl.handle.net/2115/45262
タイトル	Non-chondritic oxygen isotopic component of metals in a noble-gas-rich chondrite : vestige of stellar wind from the protosun?
著者	Fujimoto, Kumiko ; Itoh, Shoichi ; Ebata, Shingo ; Yurimoto, Hisayoshi
著者名 Fujimoto, Kumiko
著者名 Itoh, Shoichi
著者名 Ebata, Shingo
著者名 Yurimoto, Hisayoshi
言語	英語
キーワード	oxygen isotopes
	chondrite
	protosun
	solar wind
	solar system
発行日	2009
出版者	The Geochemical Society of Japan
収録物名	Geochemical Journal
巻(号)	43
ページ	e11-e15
抄録	Oxygen isotopic compositions of metal grains in a noble-gas-rich chondrite, NWA 801 CR2, have been determined by secondary ion mass spectrometry. The results show bimodal distribution on Δ17O histogram with peaks of Δ17O = 2.3 and –35.0‰. The 16O-rich peak seems to be due to stellar wind from the protosun. The 16O enrichment is comparable with the most 16O-rich value from chondrite constituents. Difference of oxygen isotopic composition of stellar wind between protosun and the present sun implies how self-pollution by planetary embryos during the planet formation epoch have occurred and whether the present solar photosphere preserves the representative composition of the solar system.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0016-7002
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.2343/geochemj.1.0057