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

Published online by Cambridge University Press:  25 April 2016

Kinwah Wu
Affiliation:
Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia [email protected]
Dayal T. Wickramasinghe
Affiliation:
ANU Astrophysical Theory Centre and Department of Mathematics, SMS, Australian National University, Canberra, ACT 2601, Australia
Brian Warner
Affiliation:
Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa

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.

Type
Gallactic and Stellar
Copyright
Copyright © Astronomical Society of Australia 1995

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