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Un planeta gigante fotografiado en el disco de la joven estrella beta Pictoris
A-M Lagrange1, M Bonnefoy, G Chauvin
1Laboratoire d'Astrophysique, Observatoire de Grenoble, Université Joseph Fourier, CNRS, BP 53, F-38041 Grenoble, France. anne-marie.lagrange@obs.ujf-grenoble.fr
Science (New York, N.Y.)
|June 12, 2010
Resumen
Los astrónomos descubrieron un planeta gigante de gas masivo, beta Pictoris b, que orbita alrededor de la joven estrella beta Pictoris. Este hallazgo confirma la rápida formación de planetas gigantes de gas en los discos protoplanetarios.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Ciencia exoplanetaria Ciencia de los exoplanetas.
Sus antecedentes:
- El sistema beta Pictoris es un sistema estelar joven, de aproximadamente 10 millones de años de edad.
- Los discos protoplanetarios son cruciales para comprender los procesos de formación de los planetas.
Objetivo del estudio:
- Para confirmar la presencia de un planeta gigante masivo dentro del sistema beta Pictoris.
- Para investigar la rápida formación de planetas gigantes gaseosos.
- Para validar el uso de estructuras de disco como indicadores de planetas incrustados.
Principales métodos:
- Imágenes directas de exoplanetas.
- Análisis de la estructura del sistema beta Pictoris y sus compañeros planetarios.
Principales resultados:
- Un planeta gigante masivo, beta Pictoris b, ha sido identificado.
- El planeta se encuentra a 8 a 15 unidades astronómicas de la estrella.
- Beta Pictoris b es el planeta fotografiado más cercano a su estrella madre, con un corto período orbital.
Conclusiones:
- Los planetas gigantes de gas pueden formarse rápidamente dentro de los discos protoplanetarios.
- Las estructuras de disco sirven como huellas digitales confiables para detectar planetas incrustados.
- La proximidad de Beta Pictoris b a su estrella ofrece una oportunidad única para estudiar la evolución planetaria.
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