On the evidence for brown-dwarf secondary stars in cataclysmic variables
Astrophysics
2009-11-07 v1
Abstract
We present the K-band spectrum of the cataclysmic variable LL And, obtained using NIRSPEC on Keck-II. The spectrum shows no evidence for the absorption features observed by Howell & Ciardi (2001), which these authors used to claim a detection of a brown-dwarf secondary star in LL And. In light of our new data, we review the evidence for brown-dwarf secondary stars in this and other cataclysmic variables.
Cite
@article{arxiv.astro-ph/0211475,
title = {On the evidence for brown-dwarf secondary stars in cataclysmic variables},
author = {S. P. Littlefair and V. S. Dhillon and E. L. Martin},
journal= {arXiv preprint arXiv:astro-ph/0211475},
year = {2009}
}
Comments
6 pages, to appear in Monthly Notices, accepted