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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
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彗星科学. 彗星科学. 彗星科学. 彗星67P/チュリュモフ・ゲラシメンコの地表の性質と初期の活動
Samuel Gulkis1, Mark Allen2, Paul von Allmen2
1Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA. samuel.gulkis@jpl.nasa.gov.
まとめ
彗星67P/チュリュモフ・ゲラシメンコ
科学分野:
- 惑星科学 惑星科学
- 彗星科学 彗星科学
- 天体生物学 アストロバイオロジー
背景:
- 熱伝達と氷の昇華は,彗星の進化を理解する鍵です.
- 彗星67P/チュリュモフ・ゲラシメンコは,これらの過程のユニークなケーススタディを提供します.
研究 の 目的:
- 彗星67P/チュリウモフ・ゲラシメンコの地下温度と水蒸気スペクトルのマッピング.
- 熱伝導,氷の昇華,彗星の活動との関係を調査する.
主な方法:
- ローゼッタ軌道探査機 (MIRO) に搭載されたマイクロ波器具を用いて,波長1.6mmと0.5mmで観測した.
- 地下温度の地図と水蒸気スペクトルを分析した.
主要な成果:
- 核の回転と形状に関連して,H2Oの生産率は0.3から1.2kgs{-1}まで変化した.
- 水の放出ガスは,彗星の彗星に局限していた.
- 首 首 首 首 首 首 首 首 首 首 首
- region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region. region.
- 地下温度は季節的および昼間の変動を示した.
結論:
- サブミリメートルの放射線は,日中の熱性皮膚の深さに似た深さから発生した.
- 低熱慣性 (1050 J K ((-1) m ((-2) s ((-0.5)) は,粉状の絶熱面を示唆する.
- これらの発見は,彗星の形成と進化についての洞察を提供します.
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