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Observaciones del cometa 19P/Borrelly por la cámara integrada en miniatura y el espectrómetro a bordo de Deep Space 1
L A Soderblom1, T L Becker, G Bennett
1United States Geological Survey, 2255 North Gemini Drive, Flagstaff, AZ 86001, USA. lsoderblom@usgs.gov
Science (New York, N.Y.)
|April 6, 2002
Resumen
Deep Space 1 observó el cometa 19P/Borrelly, revelando un núcleo caliente y seco con variaciones significativas en la superficie. Su prominente chorro de polvo estaba fijo en orientación, sugiriendo alineación con el núcleo.
Área de la Ciencia:
- Exploración del sistema solar Exploración del sistema solar
- Ciencias planetarias Ciencias planetarias.
- Ciencia de los Cometas Ciencia de los Cometas
Sus antecedentes:
- Júpiter-_cometa_de_la_familia_de_Júpiter_19P/Borrelly_es_un_cuerpo_celestial_de_8_kilómetros_de_longitud. es_un_cuerpo_celestial_de_8_kilómetros de_longitud. es_un_cuerpo_celestial_de_longitud. es_un_cuerpo_celestial_de_longitud. es_un_cuerpo_celestial_de_longitud. es_un_cuerpo_celestial_de_longitud.
- La nave espacial proporcionó observaciones de cerca del núcleo del cometa.
Objetivo del estudio:
- Para analizar las características de la superficie y la composición del núcleo del cometa 19P/Borrelly.
- Para investigar la naturaleza de las características del polvo en el coma del cometa.
Principales métodos:
- Imágenes de corto alcance y espectroscopia utilizando la cámara integrada en miniatura y el espectrómetro (MICAS).
- Análisis del espectro infrarrojo de longitud de onda corta (de 1,3 a 2,6 micrómetros).
Principales resultados:
- El_núcleo_exhibe_significativa_heterogeneidad_de_superficie_con_variaciones_de_albedo_desde_0.01_hasta_0.03.
- El espectro indica una superficie caliente y seca sin evidencia de hielo de agua o minerales hidratados.
- El_coma_contiene_dos_tipos_de_polvo:_fans_y_jets_collimados,_con_un_jet_prominente_que emana_de_una_cuenca.
- La orientación fija del chorro de polvo principal sugiere alineación con el eje de rotación del núcleo.
Conclusiones:
- La superficie del cometa 19P/Borrelly es geológicamente compleja y predominantemente seca.
- Es probable que la sublimación ocurra en menos del 10% de la superficie.
- La orientación de los grandes chorros de polvo puede indicar el eje de rotación del cometa.
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