Department of Physics and Astronomy: Publications and Other Research
Date of this Version
3-1-1971
Document Type
Article
Citation
THE ASTROPHYSICAL JOURNAL, 164:331-340, 1971 March 1
Abstract
A theory due to Eddington is employed to calculate second-order corrections to the usual linear, quasi-adiabatic pulsational amplitudes. Such corrections are necessary in order to evaluate the pulsational stability of stars in thermal imbalance (dS0/dt ≠ 0). The second-order quantities are calculated, and their properties discussed, for a wide variety of polytropic models. Subsequently, a number of these models are tested for pulsational stability, and the conclusions drawn in an earlier, more preliminary work are re-evaluated on the basis of the results. In particular, it is found that stars in pre-main-sequence contraction are probably stable against pulsations energized via thermal imbalance.
Comments
Copyright 1971 The University of Chicago All rights reserved.