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La inestabilidad temprana del Sistema Solar provocada por la dispersión del disco gaseoso
Beibei Liu1,2, Sean N Raymond3, Seth A Jacobson4
1Zhejiang Institute of Modern Physics, Department of Physics & Zhejiang University-Purple Mountain Observatory Joint Research Center for Astronomy, Zhejiang University, Hangzhou, China. bbliu@zju.edu.cn.
Nature
|April 28, 2022
Resumen
Los planetas gigantes del Sistema Solar probablemente se volvieron inestables debido a la dispersión del disco gaseoso temprano. Este evento, que ocurrió millones de años después de la formación, puede haber dado forma al desarrollo del planeta terrestre, incluido el pequeño tamaño de Marte.
Área de la Ciencia:
- Ciencias planetarias
- La astrofísica
- La astrofísica computacional
Sus antecedentes:
- La arquitectura orbital del Sistema Solar se atribuye a la inestabilidad dinámica de un planeta gigante.
- El detonante preciso y el momento de esta inestabilidad siguen siendo inciertos.
Objetivo del estudio:
- Para investigar el papel de la dispersión del disco protoplanetario gaseoso en el desencadenamiento de la inestabilidad del planeta gigante.
- Para determinar el momento de la inestabilidad del planeta gigante en el sistema solar temprano.
Principales métodos:
- Simulaciones dinámicas de la migración y la inestabilidad del planeta gigante.
- Modelado hidrodinámico de la evolución del disco protoplanetario.
Principales resultados:
- La inestabilidad del planeta gigante fue probablemente provocada por la dispersión de adentro hacia afuera del disco gaseoso.
- El borde interno del disco que se evapora perturbó las órbitas planetarias, causando compresión dinámica e inestabilidad.
- Las órbitas planetarias finales simuladas se alinean con la configuración observada del Sistema Solar.
Conclusiones:
- La inestabilidad del planeta gigante ocurrió durante la disipación del disco gaseoso, unos pocos a diez millones de años después del nacimiento del Sistema Solar.
- La inestabilidad de los primeros planetas gigantes puede haber influido en la formación de planetas terrestres y esculpido la masa de Marte.
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