Y Asteroseismology of Kepler ZZ Ceti Stars with Fully Evolutionary Models

0480897 - ASÚ 2018 RIV US eng C - Conference Paper (international conference)
Romero, A.D. - Corsico, A.H. - Castanheira, B.G. - De Geronimo, F.C. - Kepler, S.O. - Althaus, L.G. - Koester, D. - Kawka, Adela - Gianninas, A. - Bonato, C.
Y Asteroseismology of Kepler ZZ Ceti Stars with Fully Evolutionary Models.
Proceedings of 20th European White Dwarf Workshop. San Francisco: Astronomical Society of the Pacific, 2017 - (Tremblay, P.), s. 269-274. ASP Conference Series, 509. ISBN 9781583819029.
[European Workshop on White Dwarfs /20./. Coventry (GB), 25.07.2016-29.07.2016]
R&D Projects: GA ČR GA15-15943S
Grant - others:NASA(US) NNX14AF65G; NASA(US) NNX144AF65G
Institutional support: RVO:67985815
Keywords : white-dwarf stars * precision asteroseismology * neighborhood
OECD category: Astronomy (including astrophysics,space science)

Recently the Kepler spacecraft observed ZZ Ceti stars giving the opportunity to study their variability for long baselines. We present a study of pulsational properties of two ZZ Ceti stars observed with the Kepler spacecraft: GD 1212 and SDSS J113655.17+040952.6, based on a grid of full evolutionary models of DA white dwarf stars, characterized by detailed and consistent inner chemical profiles. For J113655.17+040952 we found values of gravity and effective temperature in good agreement with spectroscopy. For GD 1212 the asteroseismological fits show a stellar mass higher than the spectroscopic value, but in agreement with the determinations from photometry coupled with parallax.
Permanent Link: http://hdl.handle.net/11104/0276563