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Feedback Mass Transfer in Cataclysmic Variables: An Explanation of the Behaviour of VY Scl Stars

  • Kinwah Wu (a1), Dayal T. Wickramasinghe (a2) and Brian Warner (a3)

Abstract

We investigate irradiation-driven mass transfer in cataclysmic variables in the presence of shielding of the radiation by an accretion disk. We have shown that the shielding can cause a temporal drop of 3–5 magnitudes in the brightness of systems with orbital periods shorter than about 4 hr. This provides a possible explanation for the brightness variations in the VY Scl stars.

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