ストラトスフィアの塵の粒子の高貴なガス:地球外起源の確認
Science (New York, N.Y.)
|January 23, 1981
まとめ
ストラトスフィアの塵の粒子の高貴ガス分析は,太陽のネオンとアルゴンの割合を明らかにします. しかし,これらのコンドリート粒子のクセノンは,主たる惑星起源を示しており,その濃度は炭酸性コンドリートに匹敵する.
科学分野:
- 宇宙塵の分析について
- 高貴ガスの地化学は,高貴ガスの地化学である.
- 惑星科学は惑星科学である.
背景:
- ストラトスフィアの塵粒子は,地球外物質の洞察を提供している.
- 高貴なガス (ネオン,アルゴン,クセノン) は,太陽系起源の重要なトレーサーである.
- コンドリート粒子は,太陽系の原始的な物質である.
研究 の 目的:
- 高貴ガスの元素と同位体の比率をコンドリート層のストラトスフィアの塵で決定する.
- これらの粒子の中の貴気体の起源を調査するために.
- 発見を,既知の隕石や太陽の組成と比較する.
主な方法:
- 高貴ガスの元素比と同位体比を測定する.
- ストラトスフィアの13個の"コンドリート"塵の粒子の分析.
- 太陽光や隕石からの貴金属ガスデータとの比較.
主要な成果:
- ネオンとアルゴンは太陽の比率を示しています.
- クセノンの組成は,主に惑星からの影響を受けます.
- クセノンの濃度は,高貴なガスに富んだ炭酸性コンドライトの残留物に見られる濃度に近い.
結論:
- ストラトスフィアのコンドリート塵は,太陽と惑星の貴気体成分の混合物を含んでいます.
- 高濃度のクセノンは,惑星の貯蔵庫からの重要な貢献を示唆しています.
- これらの発見は,初期の太陽系における高貴ガス分布の理解を深める.
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