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Hydrodynamic escape of a proto-atmosphere just after a giant impact
https://jaxa.repo.nii.ac.jp/records/20657
https://jaxa.repo.nii.ac.jp/records/2065715807c94-003d-4d8b-8f73-8bc94af4458c
Item type | 会議発表論文 / Conference Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Hydrodynamic escape of a proto-atmosphere just after a giant impact | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 原始大気 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流体力学的脱出 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 巨大衝突 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 高温 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面温度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星大気 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 水素 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 数値解析 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | protoatmosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | hydrodynamic escape | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | giant impact | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | high temperature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface temperature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary atmosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | hydrogen | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical analysis | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
その他のタイトル | ||||||
その他のタイトル | 巨大衝突直後の原始大気の流体力学的脱出 | |||||
著者 |
玄田, 英典
× 玄田, 英典× 阿部, 豊× Genda, Hidenori× Abe, Yutaka |
|||||
著者所属 | ||||||
東京大学 大学院理学系研究科 | ||||||
著者所属 | ||||||
東京大学 大学院理学系研究科 | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo Graduate School of Science | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo Graduate School of Science | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構宇宙科学研究本部 | |||||
出版者(英) | ||||||
出版者 | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) | |||||
書誌情報 |
第36回月・惑星シンポジウム en : Proceedings of the 36th ISAS Lunar and Planetary Symposium p. 29-32, 発行日 2003-11 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The escape timescale of an atmosphere heated by a giant impact to an extremely high temperature was calculated. A large amount of vaporized silicate suppresses the escape flux of hydrogen at the surface temperature higher than 4,000 K. Thus, escape timescale of hydrogen is longer than 10(exp 6) years. At 2,000 to 4,000 K, the heavy gases (e.g., H2O, CO2, CO, N2), which are thought to be contained in a proto-atmosphere, suppress the escape flux of hydrogen. For example, when the mean molecular weight is 10 g/mol, the escape timescale of hydrogen is longer than 10(exp 6) years. Since the planetary surface and/or planetary body cools down to 2,000 K within 10(exp 6) years, giant-impact-induced hydrodynamic escape is unlikely for a proto-atmosphere. | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0046650008 |