カイパーベルトの氷の物体の衝突家族
Michael E Brown1, Kristina M Barkume, Darin Ragozzine
1Division of Geological and Planetary Sciences, California Institute of Technology, Mail Code 150-21, 1200 E. California Blvd, Pasadena, California 91125, USA. mbrown@caltech.edu
Nature
|March 16, 2007
まとめ
科学者たちは,新しいカイパーベルトオブジェクトファミリーを発見し,おそらく2003 EL61.1オブジェクトに対する巨大な衝突からの断片である. この発見は,宇宙のこの領域で衝突によって作られた家族の最初の証拠を提供します.
科学分野:
- 惑星科学は惑星科学である.
- 太陽系の進化 太陽系の進化
- カイパーベルトのオブジェクト
背景:
- 太陽系の小さな天体は,衝突と侵食によって形成されます.
- 衝突の残骸である小惑星ファミリーは,十分に文書化されています.
- 衝突で作られたファミリーは,カイパーベルトで以前は特定されていなかった.
研究 の 目的:
- カイパーベルトオブジェクトファミリーの発見を報告するために.
- この新しいファミリーの起源と,既知のオブジェクトとの関連を調査する.
主な方法:
- カイパーベルトオブジェクトの軌道および表面特性分析.
- 新たに発見された物体を,既知のカイパーベルト物体,特に2003 EL61.1と比較する.
主要な成果:
- 軌道と表面特性が非常に似ているカイパーベルトオブジェクトファミリーの発見.
- これらのオブジェクトは,大きなカイパーベルトオブジェクト2003 EL61.1と特徴を共有しています.
- このファミリーは,2003年EL61の放出された氷のマントルの断片である可能性が高いと特定されています.
結論:
- この発見は,カイパーベルトの衝突で生まれた家族の最初の証拠を提供します.
- この発見は,2003年EL61が巨大な衝撃を経験したという仮説を裏付けている.
- 特定されたファミリーは,この衝突イベントで放出された氷のマントルの残骸を表しています.
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