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Precision Asteroseismology of DAV (ZZ Ceti) White Dwarf Stars

Published online by Cambridge University Press:  12 April 2016

Paul A. Bradley
Paul A. Bradley*
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545

Abstract

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Recently, Clemens suggested that the similarity in period structure of the hotter DAV (ZZ Ceti) stars could be explained if they pulsated in a common set of modes. Here, I use theoretical pulsation periods from a new grid of evolutionary DA white dwarf models to determine the internal structure of G 117–B15A and R 548. Both stars have hydrogen layer masses of × 1.5 × 10−4M* and oxygen-rich cores with a composition gradient starting near 0.75M*.

Type
Part 1. The Scientific Programme
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 94 - 95
Copyright
Copyright © Astronomical Society of the Pacific 1995

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