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El inicio de la formación de planetas en los discos de enanas marrones
Dániel Apai1, Ilaria Pascucci, Jeroen Bouwman
1Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA. apai@as.arizona.edu
Science (New York, N.Y.)
|October 22, 2005
Resumen
Los procesos de formación de planetas, incluido el crecimiento y asentamiento del polvo, ocurren en discos fríos alrededor de las enanas marrones, similares a los que rodean a las estrellas. Esto sugiere que la formación de planetas es un proceso común en los discos circumestelares jóvenes.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Ciencia exoplanetaria Ciencia de los exoplanetas.
Sus antecedentes:
- La formación de planetas comienza con el crecimiento de granos de polvo y el asentamiento en discos protoplanetarios.
- Estos procesos están bien estudiados en los discos alrededor de estrellas de masa baja e intermedia.
Objetivo del estudio:
- Para investigar los procesos de formación de planetas en los discos alrededor de las enanas marrones.
- Para comparar la evolución del polvo en los discos de enanas marrones con los discos estelares.
Principales métodos:
- Adquisición y análisis de espectros infrarrojos de discos alrededor de enanas marrones y candidatas.
- Comparación de las características espectrales observadas con modelos de crecimiento y sedimentación del polvo.
Principales resultados:
- Los espectros infrarrojos revelan el crecimiento del polvo y el asentamiento en los discos alrededor de las enanas marrones.
- Estos procesos son similares o idénticos a los observados en los discos alrededor de las estrellas.
Conclusiones:
- El inicio de la formación de planetas ocurre en discos fríos alrededor de las enanas marrones.
- La formación de planetas es un proceso robusto, probablemente común en la mayoría de los discos circumestelares jóvenes, independientemente de la masa del objeto central.
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