The mode trapping properties of full DA white dwarf evolutionary models

Abstract

An adiabatic, non-radial pulsation study of a 0.563 M_sun DA white dwarf model is presented on the basis of new evolutionary calculations performed in a self-consistent way with the predictions of time dependent element diffusion, nuclear burning and the history of the white dwarf progenitor. Emphasis is placed on the role played by the internal chemical stratification of these new models in the behaviour of the eigenmodes, and the expectations for the full g-spectrum of periods. The implications for the mode trapping properties are discussed at length. In this regard, we find that, for high periods, the viability of mode trapping as a mode selection mechanism is markedly weaker for our models, as compared with the situation in which the hydrogen-helium transition region is treated assuming equilibrium diffusion in the trace element approximation.

10 pages, 14 figures. Accepted for publication in Astronomy & Astrophysics

References in corpus (5)

• Diffusion and the occurrence of hydrogen shell flashes in helium white dwarf stars
• Evolution of a 3 \msun star from the main sequence to the ZZ Ceti stage: the role played by element diffusion
• New DA white dwarf evolutionary models and their pulsational properties
• The Effects of Element Diffusion on the Pulsational Properties of Variable DA White Dwarf Stars
• A New Code for Nonradial Stellar Pulsations and its Application to Low - Mass, Helium White Dwarfs

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