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Ultra-high precision white dwarf asteroseismology

Published online by Cambridge University Press:  27 October 2016

Noemi Giammichele ,
Stéphane Charpinet ,
Gilles Fontaine ,
Pierre Brassard  and
Weikai Zong
Noemi Giammichele
Affiliation:
Département de Physique, Université de Montréal, Montréal, QC H3C 3J7, Canada
Stéphane Charpinet
Affiliation:
CNRS, UPS-OMP, Université de Toulouse, Toulouse, France
Gilles Fontaine
Affiliation:
Département de Physique, Université de Montréal, Montréal, QC H3C 3J7, Canada
Pierre Brassard
Affiliation:
Département de Physique, Université de Montréal, Montréal, QC H3C 3J7, Canada
Weikai Zong
Affiliation:
CNRS, UPS-OMP, Université de Toulouse, Toulouse, France
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Abstract

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We present a brief progress report in our quest for deriving seismic models of pulsating white dwarfs that can account simultaneously for all the observed periods at the precision of the observations. We point out that this is possible from a pratical point of view only if parametrized models are used to complement evolutionary models. We adopt a double optimization procedure that insures that the best possible model in parameter space is found objectively and automatically. Our ultimate goal is to be able to account for the exquisite period data gathered with Kepler and Kepler-2 on key pulsating white dwarfs of both the DA (ZZ Ceti) and DB (V777 Her) type.

Keywords

starsoscillationswhite dwarfs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 596 - 599
Copyright
Copyright © International Astronomical Union 2016 

References

Brassard, P., Fontaine, G., Billères, M., Charpinet, S., Liebert, J., & Saffer, R. A. 2001, ApJ, 563, 1013 CrossRefGoogle Scholar
Charpinet, S., Giammichele, N., Brassard, P., Van Grootel, V., & Fontaine, G. 2015, 19th European Workshop on White Dwarfs, ASP Conference Series, Vol. 493, 15Google Scholar
Charpinet, S., Van Grootel, V., Brassard, P., Fontaine, G., Green, E. M., & Randall, S. K. 2013, EPJ Web of Conferences, Vol. 43, 04005Google Scholar
Fontaine, G. & Brassard, P. 2002, ApJ, 581, L33 CrossRefGoogle Scholar
Fontaine, G. & Brassard, P. 2008, PASP, 120, 1043 Google Scholar
Van Grootel, V., Charpinet, S., Brassard, P., Fontaine, G., & Green, E. M., 2013, A&A, 553, A97 Google Scholar
Winget, D. E., Nather, R. E., Clemens, J. C., et al. 1991, ApJ, 378, 326 Google Scholar