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El tránsito de los planetas circumbinarios Kepler-34 b y Kepler-35 b
William F Welsh1, Jerome A Orosz, Joshua A Carter
1Astronomy Department, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, USA. wfw@sciences.sdsu.edu
Nature
|January 13, 2012
Resumen
Se han descubierto dos nuevos planetas circumbinarios, Kepler-34 b y Kepler-35 b, orbitando pares de estrellas. Esto sugiere que más del 1% de las estrellas binarias albergan planetas gigantes, lo que indica que hay millones de planetas de este tipo en nuestra galaxia.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Ciencia exoplanetaria Ciencia de los exoplanetas.
Sus antecedentes:
- La mayoría de las estrellas similares al Sol existen en sistemas binarios.
- Los planetas circumbinarios, que orbitan alrededor de dos estrellas, fueron teorizados pero carecían de pruebas definitivas hasta Kepler-16b.
Objetivo del estudio:
- Confirmar la existencia y estudiar las propiedades de planetas circumbinarios adicionales.
- Para estimar la prevalencia y la población galáctica de planetas circumbinarios.
Principales métodos:
- Se utilizaron datos de fotometría de tránsito del telescopio espacial Kepler.
- Analizó las curvas de luz para detectar planetas que pasan delante de sus estrellas binarias anfitrionas.
Principales resultados:
- Descubrió dos planetas circumbinarios en tránsito: Kepler-34 b y Kepler-35 b.
- Ambos son gigantes gaseosos de baja densidad en órbitas casi coplanares con sus estrellas anfitrionas.
- Kepler-34 b orbita sus estrellas en 289 días; Kepler-35 b orbita sus estrellas en 131 días.
Conclusiones:
- El descubrimiento implica que más del 1% de las estrellas binarias cercanas albergan planetas gigantes en órbitas coplanares.
- Esto sugiere una población galáctica de al menos varios millones de planetas circumbinarios.
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