Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉

We present detailed evolutionary calculations for carbon - oxygen - and helium - core white dwarf models with masses ranging from M = 0.1 to M = 1.2 M⊙ and for metallicities Z = 0.001 and Z = 0. The sequences cover a wide range of hydrogen envelopes as well. We have taken finite - temperature effect...

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Detalles Bibliográficos
Autores principales: Benvenuto, Omar Gustavo, Althaus, Leandro Gabriel
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Ciencias Astronómicas
Stars: evolution
Stars: interiors
Luminosity function
Mass function
Pulsars: general
White dwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122841
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122841
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: evolution
Stars: interiors
Luminosity function
Mass function
Pulsars: general
White dwarfs
spellingShingle Ciencias Astronómicas
Stars: evolution
Stars: interiors
Luminosity function
Mass function
Pulsars: general
White dwarfs
Benvenuto, Omar Gustavo
Althaus, Leandro Gabriel
Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
topic_facet Ciencias Astronómicas
Stars: evolution
Stars: interiors
Luminosity function
Mass function
Pulsars: general
White dwarfs
description We present detailed evolutionary calculations for carbon - oxygen - and helium - core white dwarf models with masses ranging from M = 0.1 to M = 1.2 M⊙ and for metallicities Z = 0.001 and Z = 0. The sequences cover a wide range of hydrogen envelopes as well. We have taken finite - temperature effects fully into account by means of a detailed white dwarf evolutionary code, in which updated radiative opacities and equations of state for hydrogen and helium plasmas are considered. The energy transport by convection is treated within the formalism of the full - spectrum turbulence theory, as given by the self - consistent model of Canuto, Goldman and Mazzitelli. Convective mixing, crystallization, hydrogen burning and neutrino energy losses are taken into account as well. The set of models presented here is very detailed and should be valuable, particularly for the interpretation of the observational data on low - mass white dwarfs recently discovered in numerous binary configurations and also for the general problem of determining the theoretical luminosity function for white dwarfs. In this context, we compare our cooling sequences with the observed white dwarf luminosity function recently improved by Leggett, Ruiz & Bergeron and we obtain an age for the Galactic disc of ≈ 8 Gyr. Finally, we applied the results of this paper to derive stellar masses of a sample of low - mass white dwarfs.
format Articulo
Articulo
author Benvenuto, Omar Gustavo
Althaus, Leandro Gabriel
author_facet Benvenuto, Omar Gustavo
Althaus, Leandro Gabriel
author_sort Benvenuto, Omar Gustavo
title Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
title_short Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
title_full Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
title_fullStr Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
title_full_unstemmed Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 M☉
title_sort grids of white dwarf evolutionary models with masses from m= 0.1 to 1.2 m☉
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/122841
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AT althausleandrogabriel gridsofwhitedwarfevolutionarymodelswithmassesfromm01to12m
bdutipo_str Repositorios
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