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Theory of Cepheid Pulsation: Excitation Mechanisms

Published online by Cambridge University Press:  12 April 2016

John P. Cox
John P. Cox*
Affiliation:
Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, CO 80309

Abstract

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The various excitation mechanisms (eight in all) that have been proposed to account for the vibrational instability of variable stars, are surveyed. The most widely applied one is perhaps the “envelope ionization mechanism.” This can account for most of the essential characteristics of the “instability strip.” A simple explanation of the period-luminosity relation of classical Cepheids is given. A few outstanding problems in pulsation theory are also listed.

Type
Part II. Evolution and Pulsation Theory
Information
International Astronomical Union Colloquium , Volume 82: Cepheids: Theory and Observations , 1985 , pp. 126 - 146
Copyright
Copyright © Cambridge University Press 1985

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