White dwarf luminosity and mass functions from sloan digital sky survey spectra

Autores
DeGennaro, Steven; Von Hippel, Ted; Winget, D. E.; Kepler, S. O.; Nitta, Atsuko; Koester, Detlev; Althaus, Leandro Gabriel
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the first phase in our ongoing work to use Sloan Digital Sky Survey (SDSS) data to create separate white dwarf (WD) luminosity functions (LFs) for two or more different mass ranges. In this paper, we determine the completeness of the SDSS spectroscopic WD sample by comparing a proper-motion selected sample of WDs from SDSS imaging data with a large catalog of spectroscopically determined WDs. We derive a selection probability as a function of a single color (g - i) and apparent magnitude (g) that covers the range -1.0 < g - i < 0.2 and 15 < g < 19.5. We address the observed upturn in log g for WDs with Teff≲ 12,000 K and offer arguments that the problem is limited to the line profiles and is not present in the continuum. We offer an empirical method of removing the upturn, recovering a reasonable mass function for WDs with Teff< 12,000 K. Finally, we present a WD LF with nearly an order of magnitude (3358) more spectroscopically confirmed WDs than any previous work.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Stars: luminosity function, mass function
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:10915/83461
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83461
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling White dwarf luminosity and mass functions from sloan digital sky survey spectraDeGennaro, StevenVon Hippel, TedWinget, D. E.Kepler, S. O.Nitta, AtsukoKoester, DetlevAlthaus, Leandro GabrielCiencias AstronómicasStars: luminosity function, mass functionWhite dwarfsWe present the first phase in our ongoing work to use Sloan Digital Sky Survey (SDSS) data to create separate white dwarf (WD) luminosity functions (LFs) for two or more different mass ranges. In this paper, we determine the completeness of the SDSS spectroscopic WD sample by comparing a proper-motion selected sample of WDs from SDSS imaging data with a large catalog of spectroscopically determined WDs. We derive a selection probability as a function of a single color (g - i) and apparent magnitude (g) that covers the range -1.0 < g - i < 0.2 and 15 < g < 19.5. We address the observed upturn in log g for WDs with T<SUB>eff</SUB>≲ 12,000 K and offer arguments that the problem is limited to the line profiles and is not present in the continuum. We offer an empirical method of removing the upturn, recovering a reasonable mass function for WDs with T<SUB>eff</SUB>< 12,000 K. Finally, we present a WD LF with nearly an order of magnitude (3358) more spectroscopically confirmed WDs than any previous work.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-9http://sedici.unlp.edu.ar/handle/10915/83461enginfo:eu-repo/semantics/altIdentifier/issn/0004-6256info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/135/1/1info: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:UNLP2025-10-22T16:56:32Zoai:sedici.unlp.edu.ar:10915/83461Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:56:32.459SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv White dwarf luminosity and mass functions from sloan digital sky survey spectra
title White dwarf luminosity and mass functions from sloan digital sky survey spectra
spellingShingle White dwarf luminosity and mass functions from sloan digital sky survey spectra
DeGennaro, Steven
Ciencias Astronómicas
Stars: luminosity function, mass function
White dwarfs
title_short White dwarf luminosity and mass functions from sloan digital sky survey spectra
title_full White dwarf luminosity and mass functions from sloan digital sky survey spectra
title_fullStr White dwarf luminosity and mass functions from sloan digital sky survey spectra
title_full_unstemmed White dwarf luminosity and mass functions from sloan digital sky survey spectra
title_sort White dwarf luminosity and mass functions from sloan digital sky survey spectra
dc.creator.none.fl_str_mv DeGennaro, Steven
Von Hippel, Ted
Winget, D. E.
Kepler, S. O.
Nitta, Atsuko
Koester, Detlev
Althaus, Leandro Gabriel
author DeGennaro, Steven
author_facet DeGennaro, Steven
Von Hippel, Ted
Winget, D. E.
Kepler, S. O.
Nitta, Atsuko
Koester, Detlev
Althaus, Leandro Gabriel
author_role author
author2 Von Hippel, Ted
Winget, D. E.
Kepler, S. O.
Nitta, Atsuko
Koester, Detlev
Althaus, Leandro Gabriel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Stars: luminosity function, mass function
White dwarfs
topic Ciencias Astronómicas
Stars: luminosity function, mass function
White dwarfs
dc.description.none.fl_txt_mv We present the first phase in our ongoing work to use Sloan Digital Sky Survey (SDSS) data to create separate white dwarf (WD) luminosity functions (LFs) for two or more different mass ranges. In this paper, we determine the completeness of the SDSS spectroscopic WD sample by comparing a proper-motion selected sample of WDs from SDSS imaging data with a large catalog of spectroscopically determined WDs. We derive a selection probability as a function of a single color (g - i) and apparent magnitude (g) that covers the range -1.0 < g - i < 0.2 and 15 < g < 19.5. We address the observed upturn in log g for WDs with T<SUB>eff</SUB>≲ 12,000 K and offer arguments that the problem is limited to the line profiles and is not present in the continuum. We offer an empirical method of removing the upturn, recovering a reasonable mass function for WDs with T<SUB>eff</SUB>< 12,000 K. Finally, we present a WD LF with nearly an order of magnitude (3358) more spectroscopically confirmed WDs than any previous work.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description We present the first phase in our ongoing work to use Sloan Digital Sky Survey (SDSS) data to create separate white dwarf (WD) luminosity functions (LFs) for two or more different mass ranges. In this paper, we determine the completeness of the SDSS spectroscopic WD sample by comparing a proper-motion selected sample of WDs from SDSS imaging data with a large catalog of spectroscopically determined WDs. We derive a selection probability as a function of a single color (g - i) and apparent magnitude (g) that covers the range -1.0 < g - i < 0.2 and 15 < g < 19.5. We address the observed upturn in log g for WDs with T<SUB>eff</SUB>≲ 12,000 K and offer arguments that the problem is limited to the line profiles and is not present in the continuum. We offer an empirical method of removing the upturn, recovering a reasonable mass function for WDs with T<SUB>eff</SUB>< 12,000 K. Finally, we present a WD LF with nearly an order of magnitude (3358) more spectroscopically confirmed WDs than any previous work.
publishDate 2008
dc.date.none.fl_str_mv 2008
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/10915/83461
url http://sedici.unlp.edu.ar/handle/10915/83461
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6256
info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/135/1/1
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
1-9
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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score 12.982451

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