Evolutionary and pulsational properties of white dwarf stars

LG Althaus, AH Córsico, J Isern… - The Astronomy and …, 2010 - Springer
White dwarf stars are the final evolutionary stage of the vast majority of stars, including our
Sun. Since the coolest white dwarfs are very old objects, the present population of white …

Pulsating white dwarf stars and precision asteroseismology

DE Winget, SO Kepler - Annu. Rev. Astron. Astrophys., 2008 - annualreviews.org
Galactic history is written in the white dwarf stars. Their surface properties hint at interiors
composed of matter under extreme conditions. In the forty years since their discovery …

White dwarf rotation as a function of mass and a dichotomy of mode line widths: Kepler observations of 27 pulsating DA white dwarfs through K2 campaign 8

JJ Hermes, BT Gänsicke, SD Kawaler… - The Astrophysical …, 2017 - iopscience.iop.org
We present photometry and spectroscopy for 27 pulsating hydrogen-atmosphere white
dwarfs (DAVs; aka ZZ Ceti stars) observed by the Kepler space telescope up to K2 …

The pulsating white dwarf stars

G Fontaine, P Brassard - … of the Astronomical Society of the …, 2008 - iopscience.iop.org
We present a summary of what is currently known about the three distinct families of isolated
pulsating white dwarfs. These are the GW Vir stars (He/C/O-atmosphere stars with T eff≃ …

The elemental abundances in bare planetary nebula central stars and the shell burning in AGB stars

K Werner, F Herwig - Publications of the Astronomical Society of …, 2006 - iopscience.iop.org
We review the observed properties of extremely hot, hydrogen‐deficient post–asymptotic
giant branch (AGB) stars of spectral type [WC] and PG1159. Their H deficiency is probably …

Low-luminosity companions to white dwarfs

J Farihi, EE Becklin, B Zuckerman - The Astrophysical Journal …, 2005 - iopscience.iop.org
This paper presents results of a near-infrared imaging survey for low-mass stellar and
substellar companions to white dwarfs. A wide-field proper-motion survey of 261 white …

Stellar pulsations across the HR diagram: Part II

A Gautschy, H Saio - Annual Review of Astronomy and …, 1996 - annualreviews.org
▪ Abstract Stars over essentially the whole mass domain can become pulsationally unstable
during various stages of their evolution. They will appear as variable stars with …

Asteroseismic inferences on GW Virginis variable stars in the frame of new PG 1159 evolutionary models

AH Corsico, LG Althaus - Astronomy & Astrophysics, 2006 - aanda.org
An adiabatic, nonradial pulsation study of GW Vir stars is presented. The pulsation
calculations were based on PG 1159 evolutionary sequences with different stellar masses …

[HTML][HTML] Spectral analyses of PG 1159 star: constraints on the GW Virginis pulsations from HST observations

S Dreizler, U Heber - Astronomy and Astrophysics, v. 334, p …, 1998 - adsabs.harvard.edu
Spectral analyses of PG 1159 star: constraints on the GW Virginis pulsations fro ADS
Classic is now deprecated. It will be completely retired in October 2019. This page will …

New nonadiabatic pulsation computations on full PG 1159 evolutionary models: the theoretical GW Virginis instability strip revisited

AH Córsico, LG Althaus, MMM Bertolami - Astronomy & Astrophysics, 2006 - aanda.org
Aims. We reexamine the theoretical instability domain of pulsating PG 1159 stars (GW Vir
variables). Methods. We performed an extensive g-mode stability analysis on PG 1159 …