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Vibrational Instabilities and Pulsational Properties of Cool White Dwarfs

Published online by Cambridge University Press:  12 April 2016

W. Dziembowski
W. Dziembowski*
Affiliation:
Department of Physics, University of Arizona, Tucson, Arizona

Abstract

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Attention is focused on those aspects of the theory that may be relevant in understanding the nature of ZZ Ceti-type variable white dwarfs. Recent calculations show that the opacity mechanism can drive a large variety of oscillation modes, including the ones that fit observed periods. An estimate of nonlinear effects shows that resonant mode coupling plays a dominant role in determining the finite amplitude behaviour of oscillations and is also probably responsible for rapid amplitude changes observed in these variables.

Type
Colloquium Session VI
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 359 - 373
Copyright
Copyright © The University of Rochester 1979

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