A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary

T. Rauch

doi:10.1023/B:ASTR.0000044333.13490.66

A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary

Astrophysics 2009-11-10 v1

Authors: T. Rauch

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Abstract

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.

Keywords

eclipsing binary stars

Cite

@article{arxiv.astro-ph/0401006,
  title  = {A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary},
  author = {T. Rauch},
  journal= {arXiv preprint arXiv:astro-ph/0401006},
  year   = {2009}
}