On mode trapping in pulsating DA white dwarf stars
arXiv:astro-ph/0205053 · doi:10.1046/j.1365-8711.2002.05633.x
Abstract
The present work is designed to explore the effects of the time-dependent element diffusion on the mode trapping properties of DA white dwarf models with various thickness of the hydrogen envelope. Our predictions are compared with the standard assumption of diffusive equilibrium in the trace element approximation. We find that element diffusion markedly weakens the presence of mode trapping originated in the outer layers of the models, even for the case of thin hydrogen envelopes.
5 pages, 6 figures, to be published in MNRAS
References in corpus (4)
- Evolution of a 3 \msun star from the main sequence to the ZZ Ceti stage: the role played by element diffusion
- Time dependent diffusion in pulsating white dwarf stars: Asteroseismology of G117-B15A
- New DA white dwarf evolutionary models and their pulsational properties
- A New Code for Nonradial Stellar Pulsations and its Application to Low - Mass, Helium White Dwarfs