The age and colors of massive white dwarf stars

Aims. We present evolutionary calculations and colors for massive white dwarfs with oxygen-neon cores for masses between 1.06 and 1.28 M ⊙. The evolutionary stages computed cover the luminosity range from log(L/L⊙) ≈ 0.5 down to -5.2. Methods. Our cooling sequences are based on evolutionary calculat...

Descripción completa

Detalles Bibliográficos
Autores principales: Althaus, Leandro Gabriel, García Berro, E., Isern, J., Córsico, Alejandro Hugo, Rohrmann, R. D.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Ciencias Astronómicas
Stars: evolution
Stars: interiors
Stars: white dwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83234
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83234
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
Stars: white dwarfs
spellingShingle Ciencias Astronómicas
Stars: evolution
Stars: interiors
Stars: white dwarfs
Althaus, Leandro Gabriel
García Berro, E.
Isern, J.
Córsico, Alejandro Hugo
Rohrmann, R. D.
The age and colors of massive white dwarf stars
topic_facet Ciencias Astronómicas
Stars: evolution
Stars: interiors
Stars: white dwarfs
description Aims. We present evolutionary calculations and colors for massive white dwarfs with oxygen-neon cores for masses between 1.06 and 1.28 M ⊙. The evolutionary stages computed cover the luminosity range from log(L/L⊙) ≈ 0.5 down to -5.2. Methods. Our cooling sequences are based on evolutionary calculations that take into account the chemical composition expected from massive white dwarf progenitors that burned carbon in partially degenerate conditions. The use of detailed non-gray model atmospheres provides us with accurate outer boundary conditions for our evolving models at low effective temperatures. Results. We examine the cooling age, colors and magnitudes of our sequences. We find that massive white dwarfs are characterized by very short ages to such an extent that they reach the turn-off in their colors and become blue at ages well below 10 Gyr. Extensive tabulations for massive white dwarfs, accessible from our web site, are also presented.
format Articulo
Articulo
author Althaus, Leandro Gabriel
García Berro, E.
Isern, J.
Córsico, Alejandro Hugo
Rohrmann, R. D.
author_facet Althaus, Leandro Gabriel
García Berro, E.
Isern, J.
Córsico, Alejandro Hugo
Rohrmann, R. D.
author_sort Althaus, Leandro Gabriel
title The age and colors of massive white dwarf stars
title_short The age and colors of massive white dwarf stars
title_full The age and colors of massive white dwarf stars
title_fullStr The age and colors of massive white dwarf stars
title_full_unstemmed The age and colors of massive white dwarf stars
title_sort age and colors of massive white dwarf stars
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/83234
work_keys_str_mv AT althausleandrogabriel theageandcolorsofmassivewhitedwarfstars
AT garciaberroe theageandcolorsofmassivewhitedwarfstars
AT isernj theageandcolorsofmassivewhitedwarfstars
AT corsicoalejandrohugo theageandcolorsofmassivewhitedwarfstars
AT rohrmannrd theageandcolorsofmassivewhitedwarfstars
AT althausleandrogabriel ageandcolorsofmassivewhitedwarfstars
AT garciaberroe ageandcolorsofmassivewhitedwarfstars
AT isernj ageandcolorsofmassivewhitedwarfstars
AT corsicoalejandrohugo ageandcolorsofmassivewhitedwarfstars
AT rohrmannrd ageandcolorsofmassivewhitedwarfstars
bdutipo_str Repositorios
_version_ 1764820488415084546

Ejemplares similares