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Preprint 11c/03


AA Dor - An Eclipsing Subdwarf - Brown Dwarf Binary

T. Rauch (1,2)

(1) Dr.-Remeis-Sternwarte, Sternwartstraße 7, D-96049 Bamberg, Germany
(2) Institut für Astronomie und Astrophysik, Sand 1, D-72076 Tübingen, Germany

To be published in: Proc.f IAU Colloquium 194 Compact binaries in The Galaxy and beyond, in Revista Mexicana de Astronomia y Astrofisica, Conference Series

Abstract. AA Dor is an eclipsing, close, post common-envelope binary (PCEB) consisting of a sdOB primary star and an unseen secondary with an extraordinary small mass - formally a brown dwarf. We present results of NLTE spectral analysis based on phase-dependent high-resolution UVES spectroscopy.
 
Key words: Stars: binaries: eclipsing, Stars: common envelope, Stars: evolution, Stars: individual: AA Dor, Stars: low-mass, brown dwarfs

Preprint (606 kb PDF file including figures)


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