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Un disco de objetos helados dispersos y el origen de los cometas de la familia de Júpiter
1Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada. duncan@astro.queensu.ca
Science (New York, N.Y.)
|June 13, 1997
Resumen
Las simulaciones revelan un disco disperso de objetos más allá de Neptuno, formado por la dinámica temprana del sistema solar. Este disco puede ser la fuente de los cometas de la familia de Júpiter e incluye objetos recientemente identificados como 1996 RQ20.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La astrofísica computacional es una astrofísica computacional.
- Dinámica del sistema solar Dinámica del sistema solar
Sus antecedentes:
- El Cinturón de Kuiper es una región de cuerpos helados más allá de Neptuno.
- El sistema solar temprano experimentó una evolución dinámica significativa.
- El origen de los cometas de la familia de Júpiter sigue siendo un área activa de investigación.
Objetivo del estudio:
- Para investigar la formación de un disco disperso de objetos más allá de Neptuno.
- Para determinar si este disco podría ser una fuente de cometas de la familia de Júpiter.
- Para identificar a los miembros potenciales de este disco recién formado.
Principales métodos:
- Se realizaron integraciones orbitales a largo plazo (4 mil millones de años).
- Las simulaciones modelaron las interacciones entre las partículas y Neptuno.
- Se analizaron elementos orbitales de objetos simulados y se compararon con objetos observados.
Principales resultados:
- Las integraciones orbitales produjeron un disco de objetos dispersos más allá de Neptuno.
- Estos objetos exhiben mayores excentricidades e inclinaciones que los objetos del Cinturón de Kuiper.
- Aproximadamente el 1% de las partículas simuladas sobreviven en este disco para la edad del sistema solar.
- Un disco de 6 x 10^8 objetos podría suministrar los cometas observados de la familia de Júpiter.
- Los objetos 1996 RQ20 y 1996 TL66 muestran similitudes orbitales con los miembros predichos del disco.
Conclusiones:
- El disco disperso simulado es un resultado plausible de la evolución temprana del sistema solar.
- Este disco es una fuente viable para los cometas de la familia de Júpiter.
- 1996 RQ20 y 1996 TL66 son los primeros miembros identificados de este disco disperso.
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