The Secondary Stars in Short Period (Magnetic) Cataclysmic Variables

Details The Secondary Stars in Short Period (Magnetic) Cataclysmic Variables The Secondary Stars in Short Period (Magnetic) Cataclysmic Variables

2003-02-18

arxiv.org/abs/astro-ph/0302368v1

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures

Scientific paper

We review the recent knowledge base pertaining to causes for mass accretion variations (high/low states) in highly magnetic cataclysmic variables (i.e. polars). We then examine what theory has to say about the properties of the secondary stars (the mass donors) with respect to those CVs with very short orbital periods. Finally, we use recent observations of EF Eri in an extended low state to provide direct observational evidence which shows that this CV, as well as a few others, likely contain very low mass, sub-stellar secondary stars.

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