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Los vuelos cercanos de Cassini sobre las lunas de los anillos de Saturno, Pan, Dafnis, Atlas, Pandora y Epimeteo
B J Buratti1, P C Thomas2, E Roussos3
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. bonnie.buratti@jpl.nasa.gov.
Resumen
Saturno también.
Área de la Ciencia:
- Ciencias planetarias
- Estudios del sistema de Saturno
- Interacciones anillo-luna
Sus antecedentes:
- Pequeñas lunas incrustadas en o que interactúan con los anillos de Saturno influyen en su estructura y composición.
- Comprender estas interacciones entre el anillo lunar es clave para descifrar la dinámica del sistema de anillos principal de Saturno.
Objetivo del estudio:
- Investigar la morfología, estructura, entorno de partículas y composición de cinco pequeñas lunas dentro de los anillos principales de Saturno.
- Analizar las propiedades ópticas de la superficie de estas lunas e identificar los factores que las influyen.
Principales métodos:
- Realizó cinco sobrevuelos cercanos de las lunas Pan, Dafnis, Atlas, Pandora y Epimeteo utilizando la nave espacial Cassini.
- Recolectó datos incluyendo imágenes ultravioletas e infrarrojas térmicas, y analizó la morfología, estructura, entorno de partículas y composición de la luna.
Principales resultados:
- Observó que las propiedades ópticas de la superficie lunar están formadas por dos procesos competidores.
- Identificó la contaminación por material rojo de los anillos principales de Saturno y la acumulación de partículas heladas brillantes o vapor de agua de las plumas de Encelado como factores clave.
Conclusiones:
- La apariencia superficial de estas pequeñas lunas es una interacción dinámica entre el material del anillo externo y el material interno de Encelado.
- Estos hallazgos proporcionan información sobre la compleja relación entre los anillos de Saturno y sus pequeñas lunas.
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