On the evidence for brown-dwarf secondary stars in cataclysmic variables

S. P. Littlefair , V. S. Dhillon , E. L. Martin

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classification 🌌 astro-ph

keywords brown-dwarfcataclysmicevidencesecondaryspectrumstarsvariablesabsorption

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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.

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On the evidence for brown-dwarf secondary stars in cataclysmic variables

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