月の反対効果:一貫した後方散乱の貢献

B W Hapke, R M Nelson, W D Smythe

Science (New York, N.Y.)

|April 23, 1993

まとめ

月相反効果は,相角がゼロに近い明るさの急上昇であり,主に陰影の隠れではなく,一貫した逆分散によって引き起こされます. この発見は,太陽系天体の光測定観測をどのように解釈するかに影響します.

科学分野:

惑星科学は惑星科学である.
オプティクスは光学です.
天文学天文学

背景:

反対の効果,つまり相角がゼロに近い明るさの急上昇は,長い間観察されてきた現象です.
以前の説明では,この効果は主に影の隠れに起因していた.

研究の目的:

月相反効果の根本的な原因を調査するために.
影隠しと一貫したバックスキャッターメカニズムを区別する.

主な方法:

月の土壌サンプルを様々な相角度で測定した反射率.
線形と円形の両方の極化状態で光を分析した.

主要な成果:

反対のピークで線形極化比率の低下が観察されました.
反対のピークで円形の偏分比の上昇を観測した.
これらの極化変化は,一貫した逆分散の証拠を提供します.

結論:

コヘレント・バックスケーターは,月の反対効果の主な原因である.
影の隠れは,反対の効果において最小限の役割を果たします.
地球を含む天体の光度測定データの解釈を修正する.

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