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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
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El crecimiento desenfrenado de embriones planetarios facilitado por cuerpos masivos en un disco protoplanetario
S J Kortenkamp1, G W Wetherill, S Inaba
1Department of Astronomy, University of Maryland, 1204 CSS Building, Stadium Drive, College Park, MD 20742-2421, USA. kortenka@astro.umd.edu
Science (New York, N.Y.)
|August 11, 2001
Resumen
La mayoría de los exoplanetas en sistemas estelares múltiples desafían los modelos estándar de formación de planetas. Este estudio muestra que la formación de planetas terrestres puede ser posible, salvando el modelo estándar para sistemas complejos a través de un nuevo mecanismo de crecimiento desbocado.
Área de la Ciencia:
- La astronomía es la astronomía.
- Ciencia exoplanetaria Ciencia de los exoplanetas.
- La astrofísica es la astrofísica.
Sus antecedentes:
- Aproximadamente el 30% de los planetas extrasolares conocidos residen en sistemas estelares múltiples.
- Los modelos estándar de formación de planetas luchan por explicar los planetas en entornos tan complejos y sus órbitas inusuales.
Objetivo del estudio:
- Para investigar la formación de planetas del tamaño de la Tierra en sistemas estelares múltiples.
- Para determinar si el modelo estándar de formación de planetas puede ser adaptado para entornos estelares complejos.
Principales métodos:
- Identificar un tipo específico de crecimiento desbocado.
- Analizando los efectos combinados del arrastre de gas de la nebulosa y las perturbaciones gravitacionales de los compañeros masivos.
Principales resultados:
- La formación de planetas terrestres parece aislada de los desafíos planteados por los sistemas estelares múltiples.
- Un nuevo mecanismo de crecimiento desenfrenado facilita la formación de embriones planetarios.
Conclusiones:
- El modelo estándar de formación de planetas puede ser parcialmente salvado para sistemas complejos.
- La formación de embriones planetarios en sistemas estelares múltiples es posible a través de una combinación de arrastre de gas y perturbaciones de compañero.
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