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Heavy nitrogen in the Yamato-74191 and the heterogeneity of the primitive solar nebula
https://doi.org/10.15094/00004553
https://doi.org/10.15094/00004553702337ed-47dc-48c9-8c49-ec75e6d6e0be
名前 / ファイル | ライセンス | アクション |
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KJ00000036359 (2.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1991-03-01 | |||||
タイトル | ||||||
タイトル | Heavy nitrogen in the Yamato-74191 and the heterogeneity of the primitive solar nebula | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004553 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Sugiura,Naoji
× Sugiura,Naoji× Hashizume,Ko |
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著者所属(英) | ||||||
en | ||||||
Geophysical Institute, Faculty of Science, University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A systematic search for presolar grains in ordinary chondrites was made by measuring isotopes of nitrogen. Only one chondrite (Yamato-74191) out of 20 ordinary chondrites showed the presence of very heavy nitrogen of probably presolar origin. The heavy nitrogen is not particularly concentrated in either magnetic nor non-magnetic fractions. The HF/HCl residue is enriched in nitrogen but the heavy nitrogen seems to have been lost by acid treatments. The carrier of the heavy nitrogen has not been identified. The release patterns of excess ^<15>N are similar to those of primordial Ar. Chondrites more primitive than the Y-74191 do not contain the heavy nitrogen, suggesting heterogeneous distribution of the carrier of the heavy nitrogen. Together with evidence for the heterogeneous distribution of presolar SiC in meteorites, it is concluded that exotic materials were not well mixed in the primitive solar nebula. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 4, p. 352-370, 発行日 1991-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |