A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary

Details A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary

2004-01-02

arxiv.org/abs/astro-ph/0401006v1

Astrophys.Space Sci. 291 (2004) 275-282

Astronomy and Astrophysics

Astrophysics

1 page, 1 figure

Scientific paper

10.1023/B:ASTR.0000044333.13490.

AA Dor is an eclipsing, close, post common-envelope binary (PCEB) consisting of a sdOB primary star and an unseen cool companion with an extraordinary low mass. The evolution of this system appears enigmatic - results of a recent spectral analysis of the primary has shown that the secondary is formally a brown dwarf. We present results of a spectral analysis which is based on phase-resolved high-resolution and high-SN spectroscopy.

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