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Una familia de colisiones de objetos helados en el cinturón de Kuiper
Michael E Brown1, Kristina M Barkume, Darin Ragozzine
1Division of Geological and Planetary Sciences, California Institute of Technology, Mail Code 150-21, 1200 E. California Blvd, Pasadena, California 91125, USA. mbrown@caltech.edu
Nature
|March 16, 2007
Resumen
Los científicos descubrieron una nueva familia de objetos del cinturón de Kuiper, probablemente fragmentos de un impacto gigante en el objeto 2003 EL61.1. Este hallazgo proporciona la primera evidencia de familias creadas por colisión en esta región del espacio.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Evolución del sistema solar Evolución del sistema solar
- Objetos del Cinturón de Kuiper Objetos del Cinturón de Kuiper
Sus antecedentes:
- Los cuerpos pequeños del Sistema Solar son formados por colisiones y erosión.
- Las familias de asteroides, restos de impactos, están bien documentadas.
- Las familias creadas por colisión no han sido previamente identificadas en el Cinturón de Kuiper.
Objetivo del estudio:
- Para informar sobre el descubrimiento de una familia de objetos del Cinturón de Kuiper.
- Investigar el origen de esta nueva familia y su relación con objetos conocidos.
Principales métodos:
- Análisis de propiedades orbitales y superficiales de objetos del Cinturón de Kuiper.
- Comparación de objetos recién descubiertos con objetos conocidos del Cinturón de Kuiper, específicamente 2003 EL61.1.
Principales resultados:
- Descubrimiento de una familia de objetos del Cinturón de Kuiper con órbitas y propiedades superficiales muy similares.
- Estos objetos comparten características con el gran Objeto del Cinturón de Kuiper 2003 EL61.
- La familia se identifica como fragmentos probables del manto de hielo expulsado de 2003 EL61.
Conclusiones:
- Este descubrimiento proporciona la primera evidencia de familias creadas por colisión en el Cinturón de Kuiper.
- Los hallazgos apoyan la hipótesis de que 2003 EL61 experimentó un impacto gigante.
- La familia identificada representa los restos del manto de hielo expulsado durante este evento de impacto.
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