A nonadiabatic oscillation study of DB white dwarfs

A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differ...

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Detalles Bibliográficos
Autores principales: Gautschy, A., Althaus, Leandro Gabriel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Astronómicas
Stars: interior
Stars: oscillations
Stars: white dwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84954
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84954
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Stars: interior
Stars: oscillations
Stars: white dwarfs
spellingShingle Ciencias Astronómicas
Stars: interior
Stars: oscillations
Stars: white dwarfs
Gautschy, A.
Althaus, Leandro Gabriel
A nonadiabatic oscillation study of DB white dwarfs
topic_facet Ciencias Astronómicas
Stars: interior
Stars: oscillations
Stars: white dwarfs
description A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differently from its appearance in the damping/excitation rates. Another aspect of the investigation concerned the effect of heavy-element traces in homogeneous DB white-dwarf envelopes on their pulsational instability domain. The stellar models are computed with the CGM convection approach; the study can therefore be considered as a test of its performance in nonradial stability analyses.
format Articulo
Articulo
author Gautschy, A.
Althaus, Leandro Gabriel
author_facet Gautschy, A.
Althaus, Leandro Gabriel
author_sort Gautschy, A.
title A nonadiabatic oscillation study of DB white dwarfs
title_short A nonadiabatic oscillation study of DB white dwarfs
title_full A nonadiabatic oscillation study of DB white dwarfs
title_fullStr A nonadiabatic oscillation study of DB white dwarfs
title_full_unstemmed A nonadiabatic oscillation study of DB white dwarfs
title_sort nonadiabatic oscillation study of db white dwarfs
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/84954
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AT gautschya nonadiabaticoscillationstudyofdbwhitedwarfs
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