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Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
主帯小惑星P/2010 A2の最近の破壊
David Jewitt1, Harold Weaver, Jessica Agarwal
1Department of Earth and Space Sciences, 3713 Geology Building, UCLA, 595 Charles Young Drive East, California 90095, USA. jewitt@ucla.edu
Nature
|October 15, 2010
まとめ
原始的な岩体である小惑星P/2010 A2は,最近の破壊イベントの結果である可能性が高い. 観測により,核と塵の尾が明らかになり,小惑星の衝突ダイナミクスの希少な証拠を提供した.
科学分野:
- 天文学と天体物理学について
- 惑星科学 惑星科学
背景:
- 内側のメインベルト小惑星は,原始的な天体です.
- 小惑星の破壊は,小惑星の進化と塵の生成の重要なプロセスです.
研究 の 目的:
- 異常な内側のメインベルト小惑星P/2010 A2.の性質と起源を調査する.
- 小惑星破壊イベントの直接的な証拠を提供するために.
主な方法:
- 観測天文学は,観測による天文学である.
- 小惑星P/2010 A2の形態学的分析
- 粉塵粒子の分析について
主要な成果:
- P/2010 A2は,核と塵の尾を持つ彗星のような形状を示しています.
- 原子核の直径は約120メートルである.
- 観測された特徴は,2009年2月・3月の最近の破壊イベントと一致しています.
結論:
- P/2010 A2は,最近の小惑星破壊の残骸である可能性が高い.
- 残骸のゆっくりとした進化は,太陽放射線の圧力によって影響を受けます.
- この発見は,小惑星破壊機構の希少な直接的な証拠を提供します.
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