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Scattering And Absorption of Light in Planetary Regoliths
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Mapas de composición de la luna de Saturno Phoebe obtenidos por espectroscopia de imágenes
Roger N Clark1, Robert H Brown, Ralf Jaumann
1US Geological Survey, MS964, Box 25046, Federal Center, Denver, Colorado 80225, USA. rclark@usgs.gov
Nature
|May 6, 2005
Resumen
La misión Cassini-Huygens reveló a Febe, el Saturno de Saturno.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Astrobiología Astrobiología.
- Exploración del sistema solar Exploración del sistema solar
Sus antecedentes:
- Phoebe, la luna grande más externa de Saturno, tiene una inusual órbita inclinada y retrógrada.
- Esta órbita sugiere que Phoebe fue capturada gravitacionalmente por Saturno.
- Su captura implica una acreción fuera de la región de formación de Saturno, a diferencia de los satélites regulares.
Objetivo del estudio:
- Para investigar la composición de Phoebe utilizando datos de la nave espacial Cassini-Huygens.
- Para entender el origen de Phoebe y sus implicaciones para los primeros materiales del Sistema Solar.
Principales métodos:
- Espectroscopia de imágenes durante el encuentro de la nave espacial Cassini-Huygens el 11 de junio de 2004.
- Mapeo de la composición de la superficie, incluyendo minerales y compuestos orgánicos.
Principales resultados:
- Se detectaron minerales que contienen hierro ferroso, agua unida y dióxido de carbono (CO2) atrapado.
- Identificó probables filosilicatos, compuestos orgánicos, nitriles y compuestos de cianuro en la superficie de Phoebe.
- Phoebe exhibe una notable diversidad de composición, uno de los objetos más diversos en el Sistema Solar.
Conclusiones:
- La superficie de Febe probablemente contiene materiales primitivos del Sistema Solar exterior.
- La composición sugiere un origen cometario para Phoebe.
- Este hallazgo proporciona información sobre la composición del Sistema Solar temprano y los procesos de formación de satélites.
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