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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

References

Bergeron, P., Saffer, R.A., & Liebert, J. 1992, ApJ, 394, 228 Google Scholar
Bradley, P.A. 1995, ApJ, submittedGoogle Scholar
D’Antona, F., & Mazzitelli, I. 1991, in IAU Symp. 145, ed. Michaud, G. & Tutukov, A. (Dordrecht: Reidel), 399 Google Scholar
Daou, D., Wesemael, F., Bergeron, P., Fontaine, G., & Holberg, J.B. 1990, ApJ, 364, 242 CrossRefGoogle Scholar
Iben, I. Jr., & MacDonald, J. 1986, ApJ, 301, 164 Google Scholar
Koester, D., Allard, N.F., & Vauclair, G. 1994, A&A, 291, L9 Google Scholar
McCook, G.P., & Sion, E.M. 1987, ApJS, 65, 603 CrossRefGoogle Scholar
Tomaney, F. 1987, in IAU Colloq. 95, ed. Philip, A.G.D., Hayes, D.S., & Liebert, J., (Schenectady: Davis), 673 Google Scholar
Wood, M.A. 1995, Proc. 9th European Workshop on White Dwarf Stars, eds. Koester, D. & Werner, K. (Berlin: Springer), in pressGoogle Scholar