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Updated: Jul 8, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
彗星81P/ワイルド2の塵と彗星からの惑星間塵の比較
Hope A Ishii1, John P Bradley, Zu Rong Dai
1Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. hope.ishii@llnl.gov
まとめ
スターダストミッション.
科学分野:
- 宇宙化学 (コスモケミストリー)
- 惑星科学は惑星科学である.
- 天体物理学 天体物理学
背景:
- スターダストミッションは,彗星81P/ワイルド2からサンプルを採取した.
- 彗星の塵は,コンドリティックな多孔な惑星間塵の粒子に似ていると予想されていた.
- これらの粒子は彗星から生まれたと考えられています.
研究 の 目的:
- 彗星81P/ワイルド2の組成を分析するために,サンプルを採取した.
- 彗星物質と惑星間塵粒子 (IDP) を比較する.
- 太陽系物質の起源と進化を理解する.
主な方法:
- スターダストミッションから帰還した彗星サンプルを分析した.
- 返還された材料のペトログラフィックおよびミネラロジック検査.
- コンドリート性多孔性IDPと隕石の既知の組成と比較.
主要な成果:
- コンドリート性多孔性IDPに含まれる主要なシリケート物質は,彗星のサンプルには含まれていません.
- 彗星のサンプルは主に内部の太陽星雲の材料で構成されています.
- 彗星の物質の組成は,小惑星帯のコンドリート隕石と似ています.
結論:
- 彗星81P/ワイルド2に固有の外側の星雲物質は稀である可能性が高い.
- 彗星と小惑星の間にはペトロジェネティック連続体が存在します.
- ストラトスフィアのコンドリティックな多孔な惑星間塵粒子は,原始的な天体物質の研究に不可欠です.
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