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The most massive pulsating white dwarf stars

Published online by Cambridge University Press:  18 February 2014

Barbara G. Castanheira  and
S. O. Kepler
Barbara G. Castanheira
Affiliation:
Department of Astronomy and McDonald Observatory, University of Texas Austin, TX 78712, USA email: [email protected]
S. O. Kepler
Affiliation:
Instituto de Física, Universidade Federal do Rio Grande do Sul 91501-970 Porto Alegre, RS, Brazil email: [email protected]
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Abstract

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Massive pulsating white dwarf stars are extremely rare, because of their small size and because they are the final product of high-mass stars, which are less common. Because of their intrinsic smaller size, they are fainter than the normal size white dwarf stars. The motivation to look for this type of stars is to be able to study in detail their internal structure and also derive generic properties for the sub-class of variables, the massive ZZ Ceti stars. Our goal is to investigate whether the internal structures of these stars differ from the lower-mass ones, which in turn could have been resultant from the previous evolutionary stages.

In this paper, we present the ensemble seismological analysis of the known massive pulsating white dwarf stars. Some of these pulsating stars might have substantial crystallized cores, which would allow us to probe solid physics in extreme conditions.

Keywords

stars: oscillations (including pulsations)stars: white dwarfs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 281 - 284
Copyright
Copyright © International Astronomical Union 2014 

References

Bergeron, P., Fontaine, G., Billères, M., Boudreault, S., & Green, E. M. 2004, ApJ, 600, 404Google Scholar
Brickhill, A. J. 1991, MNRAS, 252, 334Google Scholar
Castanheira, B. G. & Kepler, S. O. 2009, MNRAS, 396, 1709Google Scholar
Castanheira, B. G., Kepler, S. O., Mullally, F., et al. 2006, A&A, 450, 227Google Scholar
Castanheira, B. G., Kepler, S. O., Kleinman, S. J., Nitta, A., & Fraga, L. 2010, MNRAS, 405, 2561Google Scholar
Castanheira, B. G., Kepler, S. O., Kleinman, S. J., Nitta, A., & Fraga, L. 2013, MNRAS, 430, 50Google Scholar
Giovannini, O., Kepler, S. O., Kanaan, A., Wood, A., Claver, C. F., & Koester, D. 1998, Baltic Astronomy, 7, 131Google Scholar
Hermes, J. J., Montgomery, M. H., Winget, D. E., Brown, W. R., Kilic, M., & Kenyon, S. J. 2012, ApJ, 750, L28Google Scholar
Kepler, S. O., Castanheira, B. G., Saraiva, M. F. O., et al. 2005, A&A, 442, 629Google Scholar
Kepler, S. O., Pelisoli, I., Peçanha, V., et al. 2012, ApJ, 757, 177Google Scholar
Kleinman, S. J., Harris, H. C., Eisenstein, D. J., et al. 2004, ApJ, 607, 426Google Scholar
Kleinman, S. J., Kepler, S. O., Koester, D., et al. 2013, ApJS, 204, 5CrossRefGoogle Scholar
Montgomery, M. H., Williams, K. A., Winget, D. E., Dufour, P., De Gennaro, S., & Liebert, J. 2008, ApJ, 678, L51Google Scholar
Mukadam, A. S., Mullally, F., Nather, R. E., et al. 2004, ApJ, 607, 982Google Scholar
Mukadam, A. S., Montgomery, M. H., Winget, D. E., Kepler, S. O., & Clemens, J. C. 2006, ApJ, 640, 956Google Scholar
Mullally, F., Thompson, S. E., Castanheira, B. G., et al. 2005, ApJ, 625, 966Google Scholar
Nitta, A., Kleinman, S. J., Krzesinski, J., et al. 2009, ApJ, 690, 560Google Scholar
Perlmutter, S., Aldering, G., Goldhaber, G., et al. 1999, ApJ, 517, 565Google Scholar
Riess, A. G., Filippenko, A. V., Challis, P., et al. 1998, AJ, 116, 1009CrossRefGoogle Scholar
Werner, K. & Herwig, F. 2006, PASP, 118, 183Google Scholar
Winget, D. E., van Horn, H. M., & Hansen, C. J. 1981, ApJ, 245, L33Google Scholar
Winget, D. E., Kepler, S. O., Campos, F., et al. 2009, ApJ, 693, L6Google Scholar