Open AccessOn mode trapping in pulsating DA white dwarf stars
Author(s) -
Benvenuto O. G.,
Córsico A. H.,
Althaus L. G.,
Serenelli A. M.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05633.x
Subject(s) - physics , white dwarf , trapping , diffusion , stars , envelope (radar) , astrophysics , mode (computer interface) , heavy element , work (physics) , hydrogen , atomic physics , thermodynamics , quantum mechanics , ecology , telecommunications , radar , computer science , biology , operating system
The effects are explored of time‐dependent element diffusion on the mode‐trapping properties of DA white dwarf models with various thicknesses 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 originating in the outer layers of the models, even for the case of thin hydrogen envelopes.