Non-chondritic oxygen isotopic component of metals in a noble-gas-rich chondrite : vestige of stellar wind from the protosun?
スポンサーリンク
概要
- 論文の詳細を見る
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.
- The Geochemical Society of Japanの論文
- 2009-12-01
著者
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YURIMOTO Hisayoshi
Department of Earth and Planetary Sciensces, Tokyo Institute of Technology
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Fujimoto Kumiko
Department Of Natural History Sciences Hokkaido University
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ITOH SHOICHI
Department of Natural History Sciences, Hokkaido University
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EBATA SHINGO
Department of Natural History Sciences, Hokkaido University
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Ebata Shingo
Department Of Natural History Sciences Hokkaido University
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Itoh Shoichi
Department Of Natural History Sciences Hokkaido University
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Yurimoto Hisayoshi
Department Of Earth And Planetary Sciences Tokyo Institute Of Technology
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Yurimoto Hisayoshi
Department of Natural History Sciences, Hokkaido University
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FUJIMOTO Kumiko
Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University
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