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The Reaction of Low-Mass Stars to Anisotropic Irradiation and its Implications for the Secular Evolution of Cataclysmic Binaries

Published online by Cambridge University Press:  25 May 2016

H. Ritter ,
Z. Zhang  and
U. Kolb
H. Ritter
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, Postfach 15 23, 85740 Garching, Germany
Z. Zhang
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, Postfach 15 23, 85740 Garching, Germany
U. Kolb
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, Postfach 15 23, 85740 Garching, Germany

Abstract

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A semi-analytic model for the reaction of a low-mass star to anisotropic irradiation of low incident flux is presented. By applying this model to the donor star of cataclysmic binaries (CBs) it is shown that CBs are likely to be unstable against irradiation-driven runaway mass transfer. The implications of this instability for the long-term evolution of CBs are examined. The possibility is discussed that because of this instability CBs evolve through a limit cycle in which phases of high and low mass transfer rate alternate on a time scale short compared to the evolutionary time scale.

Type
1 Binary Evolution
Information
Symposium - International Astronomical Union , Volume 165: Compact Stars in Binaries , 1996 , pp. 65 - 71
Copyright
Copyright © Kluwer 1996 

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