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Material orgánico alifático localizado en la superficie de Ceres
M C De Sanctis1, E Ammannito2,1, H Y McSween3
1Istituto di Astrofisica e Planetologia Spaziali-Istituto Nazionale di Astrofisica, 00133 Roma, Italy.
Science (New York, N.Y.)
|February 18, 2017
Resumen
Los compuestos orgánicos fueron detectados en el planeta enano Ceres usando firmas espectrales. Este hallazgo sugiere que Ceres pudo haber tenido condiciones favorables para la química prebiótica.
Área de la Ciencia:
- Ciencias planetarias
- Astrobiología
- Geoquímica orgánica
Sus antecedentes:
- Los compuestos orgánicos son componentes clave del sistema solar.
- Su presencia en asteroides y cometas se investiga activamente.
- Las firmas espectrales de los orgánicos han sido escurridizas en los asteroides.
Objetivo del estudio:
- Para identificar las firmas espectrales orgánicas en la superficie del planeta enano Ceres.
- Caracterizar la naturaleza y la distribución del material orgánico detectado.
- Para evaluar las implicaciones para la química prebiótica en Ceres.
Principales métodos:
- Análisis de los datos del espectrómetro de mapeo visible e infrarrojo (VIMS) a bordo de la nave espacial Dawn.
- Identificación de las características de absorción en el rango espectral de 3,4 micrómetros.
- Mapeo de la distribución espacial de la firma orgánica.
Principales resultados:
- Se detectó una clara característica de absorción orgánica a 3,4 micrómetros en Ceres.
- La firma es característica de la materia orgánica alifática.
- El material orgánico está localizado en una región cerca del cráter Ernutet.
Conclusiones:
- Ceres posee un entorno químico complejo con diversos materiales, incluidos los orgánicos.
- La presencia de compuestos orgánicos, minerales hidratados y sales sugiere el potencial de la química prebiótica.
- Este descubrimiento mejora nuestra comprensión de la distribución orgánica en el sistema solar.
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