Accretion Disks in Evolved Cataclysmic Variables

Details Accretion Disks in Evolved Cataclysmic Variables Accretion Disks in Evolved Cataclysmic Variables

2010-09-30

arxiv.org/abs/1010.0008v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, 5 figures, presented at the "Physics of Accreting Compact Binaries" Conference held in Kyoto, Japan on July 26 - 30,

Scientific paper

We explore conditions and structure of accretion disks in short-period Cata- clysmic Variables (CVs), which have evolved beyond the period minimum. We show that accretion discs in systems with extreme mass ratios grow up to the size of corresponding Roche lobe and are relatively cool. In contrast, the viscosity and temperature in spiral arms formed as a result of a 2:1 resonance are higher and their contribution plays an increasingly important role. We model such discs and generate light curves which successfully simulate the observed double-humped light curves of SDSS1238, SDSS0804, SDSS1610 and V 455 And in quiescence.

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