VERY LOW MASS STARS, BROWN DWARFS AND GIANT PLANETS.

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References
(2008) Discovery of a Wide Companion near the Deuterium-burning Mass Limit in the Upper Scorpius Association, ApJ Letter, 673, L185

Se ha descubierto un compañero de unas 14 MJup situada a 670 UA de UscoCTIO108, una enana marrón de 60 MJup perteneciente a la joven asociación de Upper Scorpius.  Se trata del objeto de masa planetaria menos luminoso y masivo, detectado por imagen directa, después de 2M1207b. Los datos fotométricos y espectroscópicos que hemos obtenido, ópticos e infrarrojos, nos han permitido confirmar que tanto la primaria como la secundaria son objetos muy fríos, con Teff estimadas de 2700 y 2100K, respectivamente, y que se trata de miembros muy jóvenes de la asociación. La existencia de estos objetos tan poco masivos alrededor de enanas marrones a estas separaciones tan grandes supone un desafío para los modelos actuales de formación en discos.

Pie de imagen: Compañero de unas 14 MJup situada a 670 UA de UscoCTIO108, una enana marrón de 60 MJup perteneciente a la joven asociación de Upper Scorpius.

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