The phase 0.5 absorption in SW Sextantis-type cataclysmic variables

Details The phase 0.5 absorption in SW Sextantis-type cataclysmic variables The phase 0.5 absorption in SW Sextantis-type cataclysmic variables

1998-02-03

arxiv.org/abs/astro-ph/9802042v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, LaTeX, To appear in PASP. Also at http://www.astro.keele.ac.uk/~ch/

Scientific paper

10.1086/316150

The SW Sextantis stars are a group of cataclysmic variables with distinctive observational characteristics, including absorption features in the emission line cores at phases 0.2-0.6. Hellier and Robinson have proposed that these features are caused by the accretion stream flowing over the accretion disk. However, in a simple model the absorption occurred at all orbital phases, which is contradicted by the data. I show that invoking a flared accretion disk resolves this problem.

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