2009年
Non-chondritic oxygen isotopic component of metals in a noble-gas-rich chondrite-vestige of stellar wind from the protosun?
GEOCHEMICAL JOURNAL
- ,
- ,
- ,
- 巻
- 43
- 号
- 6
- 開始ページ
- E11
- 終了ページ
- E15
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2343/geochemj.1.0057
- 出版者・発行元
- GEOCHEMICAL SOC JAPAN
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 Delta O-17 histogram with peaks of Delta O-17 = 2.3 and -35.0 parts per thousand. The O-16-rich peak seems to be due to stellar wind from the protosun. The O-16 enrichment is comparable with the most O-16-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.
- リンク情報
- ID情報
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- DOI : 10.2343/geochemj.1.0057
- ISSN : 0016-7002
- eISSN : 1880-5973
- Web of Science ID : WOS:000273869600008