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Updated: Jul 12, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Fotometría integrada en el disco del Voyager del tritón
Resumen
Las observaciones de Voyager de Tritón revelan su alto albedo de Bond (0,82 ± 0,05), lo que sugiere una superficie brillante. Este estudio modela la dispersión de luz de Tritón utilizando el modelo fotométrico de Hapke y los datos de neblina atmosférica.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La astronomía es la astronomía.
- La fotometría es la fotometría.
Sus antecedentes:
- Tritón, la luna más grande de Neptuno, posee una fina atmósfera de nitrógeno.
- Las observaciones de la Voyager proporcionan datos cruciales para comprender las propiedades de la superficie de Tritón.
Objetivo del estudio:
- Para estimar el albedo geométrico de Tritón, la integral de fase y el albedo de Bond.
- Para modelar la dispersión de la luz en la atmósfera de Tritón y en su superficie.
- Para investigar la relación entre la composición atmosférica y las propiedades de la superficie.
Principales métodos:
- El modelo fotométrico de Hapke se aplicó a las observaciones del disco entero de la Voyager.
- Se incorporó un modelo de neblina atmosférica delgada paralela al plano.
- Se analizaron los datos de las bandas de longitud de onda violeta, azul y verde.
Principales resultados:
- Un repunte en los datos en ángulos de fase altos se explicó por la dispersión de neblina atmosférica.
- Las profundidades ópticas de la neblina disminuyeron con el aumento de la longitud de onda.
- Los parámetros Hapke de mejor ajuste arrojaron un albedo de Bond de 0.82 ± 0.05.
Conclusiones:
- El alto albedo de Bond de Tritón indica una superficie muy brillante.
- El albedo de Bond implica una emisividad superficial de 0,59 ± 0,16 si la atmósfera está en equilibrio de vapor.
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