ドロップレット・コンドルール: 小型の隕石粒子が高速衝突で噴射され,ドロップレット・コンドルールが生成された可能性がある
Science (New York, N.Y.)
|August 1, 1975
まとめ
ドロップレットコンドルールは,ジェットによる隕石粒子の衝突によって形成された. この質感の変化は,太陽系の歴史の初期に,蓄積前の高速破壊的時代に起こった.
科学分野:
- 惑星科学は惑星科学である.
- 宇宙化学 (コスモケミストリー)
- 天体物理学 天体物理学
背景:
- コンドルルは隕石の重要な構成要素であり,太陽系の初期過程に関する洞察を提供します.
- 以前の仮説では,半径1メートル未満の物体からコンドルル形成が示唆されていた.
- コンドルルの起源は,太陽系の進化を理解する上で重要な問題である.
研究 の 目的:
- ドロップレットコンドルル形成のダイナミックモデルを提案する.
- コンドルルの創生に関わる物理的過程を調査する.
- 太陽系初期におけるコンドルル形成のタイミングと条件を決定する.
主な方法:
- 粒子衝突のダイナミックモデルの開発.
- 超高速衝突時のジェット現象の分析.
- 衝突で発生した溶融滴の質感や化学的変化を考慮する.
主要な成果:
- 隕石粒子の衝突 (0.5mmから20cm) の際に噴出によって形成されたドロップレットコンドルル.
- コンドルル形成は,主に質感の変化であり,揮発性物質を除く化学分化が最小限である.
- このモデルは,半径1m未満の物体からの形成を支持し,早期の高速破壊的段階を暗示しています.
結論:
- 粒子衝突時のジェットは,ドロップレットコンドルル形成の有効なメカニズムを提供します.
- コンドルル形成は,広範囲に広がった増殖に先立つ初期の,高速時代の間に発生しました.
- この過程は,初期の太陽系の蓄積の歴史において,重要な,しかし短い,破壊的な段階を強調しています.
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