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ヴォイジャー2からのフォトメトリー:ウランの大気,衛星,環からの初期結果
まとめ
旅行者2号は,ボイジャー2号である.
科学分野:
- 惑星科学は惑星科学である.
- 天文学 天文学
- 宇宙探査 宇宙探査
背景:
- ウラヌス系探査. ウラヌス系探査.
- "ボイジャー2"のミッション目標
研究 の 目的:
- ウラノスの大気,衛星,リングに関する新しいデータを取得します.
- 大気特性と気温を分析する.
- 衛星のアルベドと表面の性質を特徴づける.
- ウラノスの環の構造と組成を決定する.
主な方法:
- 大気吸収のための0.27マイクロメートルの光極性測定.
- 大気温の恒星隠蔽測定. 大気温の観測.
- 0.27および0.75マイクロメートルの衛星の幾何学的アルベド測定.
- リング検出と内部構造,光学的な深さ,位置の分析.
主要な成果:
- ウラノスの大気は極性吸収の強化を示さない; 1ミリバーの温度は~90Kである.
- 天王星の衛星は低アルベドで,スペクトル的に平坦な吸収物質を示し,タイタニアはふわふわした表面を持っています.
- 9つのリングが検出されました. "エプシロン"リングの縁の厚さは<150m,粒子の大きさは<30m,塵は最小です.
- 新しい狭いリングと弧が発見され",eta"リングの狭い部分は不連続である.
結論:
- 旅行者2号は天王星系に関する前例のないデータを提供した.
- 大気と衛星の組成は,惑星の形成についての洞察を提供します.
- リングシステムの詳細な構造は,ダイナミックなプロセスを明らかにします.
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