White dwarf mass distribution in the SDSS

Autores
Kepler, S. O.; Kleinman, S. J.; Nitta, A.; Koester, D.; Castanheira, B. G.; Giovannini, O.; Costa, A. F.M.; Althaus, Leandro Gabriel
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We determined masses for the 7167 DA and 507 DB white dwarf stars classified as single and non-magnetic in Data Release 4 of the Sloan Digital Sky Survey (SDSS). We obtained revised Teff and log g determinations for the most massive stars by fitting the SDSS optical spectra with a synthetic spectra grid derived from model atmospheres extending to log g = 10.0. We also calculate radii from evolutionary models and create volume-corrected mass distributions for our DA and DB samples. The mean mass for the DA stars brighter than g = 19 and hotter than Teff = 12 000 K is (M)DA ≃ 0.593 ± 0.016 M⊙. For the 150 DBs brighter than g = 19 and hotter than reff = 16000 K, we find (M)DB = 0.711 ±0.009M⊙. It appears the mean mass for DB white dwarf stars may be significantly larger than that for DAs. We also report the highest mass white dwarf stars ever found, up to 1.33 M⊙.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
White dwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/83032
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83032
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling White dwarf mass distribution in the SDSSKepler, S. O.Kleinman, S. J.Nitta, A.Koester, D.Castanheira, B. G.Giovannini, O.Costa, A. F.M.Althaus, Leandro GabrielCiencias AstronómicasWhite dwarfsWe determined masses for the 7167 DA and 507 DB white dwarf stars classified as single and non-magnetic in Data Release 4 of the Sloan Digital Sky Survey (SDSS). We obtained revised Teff and log g determinations for the most massive stars by fitting the SDSS optical spectra with a synthetic spectra grid derived from model atmospheres extending to log g = 10.0. We also calculate radii from evolutionary models and create volume-corrected mass distributions for our DA and DB samples. The mean mass for the DA stars brighter than g = 19 and hotter than Teff = 12 000 K is (M)DA ≃ 0.593 ± 0.016 M⊙. For the 150 DBs brighter than g = 19 and hotter than reff = 16000 K, we find (M)DB = 0.711 ±0.009M⊙. It appears the mean mass for DB white dwarf stars may be significantly larger than that for DAs. We also report the highest mass white dwarf stars ever found, up to 1.33 M⊙.Facultad de Ciencias Astronómicas y Geofísicas2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1315-1324http://sedici.unlp.edu.ar/handle/10915/83032enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2006.11388.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:56:33Zoai:sedici.unlp.edu.ar:10915/83032Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:56:33.359SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv White dwarf mass distribution in the SDSS
title White dwarf mass distribution in the SDSS
spellingShingle White dwarf mass distribution in the SDSS
Kepler, S. O.
Ciencias Astronómicas
White dwarfs
title_short White dwarf mass distribution in the SDSS
title_full White dwarf mass distribution in the SDSS
title_fullStr White dwarf mass distribution in the SDSS
title_full_unstemmed White dwarf mass distribution in the SDSS
title_sort White dwarf mass distribution in the SDSS
dc.creator.none.fl_str_mv Kepler, S. O.
Kleinman, S. J.
Nitta, A.
Koester, D.
Castanheira, B. G.
Giovannini, O.
Costa, A. F.M.
Althaus, Leandro Gabriel
author Kepler, S. O.
author_facet Kepler, S. O.
Kleinman, S. J.
Nitta, A.
Koester, D.
Castanheira, B. G.
Giovannini, O.
Costa, A. F.M.
Althaus, Leandro Gabriel
author_role author
author2 Kleinman, S. J.
Nitta, A.
Koester, D.
Castanheira, B. G.
Giovannini, O.
Costa, A. F.M.
Althaus, Leandro Gabriel
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
White dwarfs
topic Ciencias Astronómicas
White dwarfs
dc.description.none.fl_txt_mv We determined masses for the 7167 DA and 507 DB white dwarf stars classified as single and non-magnetic in Data Release 4 of the Sloan Digital Sky Survey (SDSS). We obtained revised Teff and log g determinations for the most massive stars by fitting the SDSS optical spectra with a synthetic spectra grid derived from model atmospheres extending to log g = 10.0. We also calculate radii from evolutionary models and create volume-corrected mass distributions for our DA and DB samples. The mean mass for the DA stars brighter than g = 19 and hotter than Teff = 12 000 K is (M)DA ≃ 0.593 ± 0.016 M⊙. For the 150 DBs brighter than g = 19 and hotter than reff = 16000 K, we find (M)DB = 0.711 ±0.009M⊙. It appears the mean mass for DB white dwarf stars may be significantly larger than that for DAs. We also report the highest mass white dwarf stars ever found, up to 1.33 M⊙.
Facultad de Ciencias Astronómicas y Geofísicas
description We determined masses for the 7167 DA and 507 DB white dwarf stars classified as single and non-magnetic in Data Release 4 of the Sloan Digital Sky Survey (SDSS). We obtained revised Teff and log g determinations for the most massive stars by fitting the SDSS optical spectra with a synthetic spectra grid derived from model atmospheres extending to log g = 10.0. We also calculate radii from evolutionary models and create volume-corrected mass distributions for our DA and DB samples. The mean mass for the DA stars brighter than g = 19 and hotter than Teff = 12 000 K is (M)DA ≃ 0.593 ± 0.016 M⊙. For the 150 DBs brighter than g = 19 and hotter than reff = 16000 K, we find (M)DB = 0.711 ±0.009M⊙. It appears the mean mass for DB white dwarf stars may be significantly larger than that for DAs. We also report the highest mass white dwarf stars ever found, up to 1.33 M⊙.
publishDate 2007
dc.date.none.fl_str_mv 2007
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/83032
url http://sedici.unlp.edu.ar/handle/10915/83032
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2006.11388.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1315-1324
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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