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El penacho de vapor de agua de Encélado es una columna de vapor de agua
Candice J Hansen1, L Esposito, A I F Stewart
1Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA. Candice.j.Hansen@jpl.nasa.gov
Science (New York, N.Y.)
|March 11, 2006
Resumen
Las observaciones de Cassini confirmaron una columna de vapor de agua en Encélado, originada en su polo sur. Este penacho es una fuente significativa para el anillo E de Saturno y el entorno espacial circundante.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Astrobiología Astrobiología.
- Física del espacio Física del espacio
Sus antecedentes:
- La luna de Saturno, Encélado, ha sido objeto de interés debido a sus potenciales océanos subterráneos.
- La nave espacial Cassini proporcionó datos sin precedentes sobre el sistema de Saturno.
Objetivo del estudio:
- Para confirmar la existencia y las características de un penacho de vapor de agua en Encelado.
- Para determinar la fuente y la composición de la pluma.
- Para evaluar la contribución de la pluma al medio ambiente de Saturno.
Principales métodos:
- Análisis de los datos de ocultación estelar del espectrógrafo de imágenes ultravioleta de Cassini.
- Tres sobrevuelos cercanos de Encélado en el 2005.
- Análisis espectroscópico para determinar la composición de la pluma.
Principales resultados:
- Confirmación de una columna de vapor de agua en la región polar sur de Encélado.
- Identificación de la composición del penacho y su naturaleza regionalmente confinada.
- Evidencia de que el penacho reabastece el anillo E de Saturno y es una fuente de OH neutro y oxígeno atómico.
Conclusiones:
- Encelado es una fuente activa de vapor de agua y otros gases.
- El penacho polar sur juega un papel crucial en la dinámica del sistema de Saturno.
- Estos hallazgos apoyan a Encélado como un objetivo clave en la búsqueda de vida extraterrestre.
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