SDSS DR7 white dwarf catalog
- Autores
- Kleinman, S. J.; Kepler, S. O.; Koester, D.; Pelisoli, Ingrid; Peçanha, Viviane; Nitta, A.; Costa, J. E. S.; Krzesinski, J.; Dufour, P.; Lachapelle, F. R.; Bergeron, P.; Yip, Ching Wa; Harris, Hugh C.; Eisenstein, Daniel J.; Althaus, Leandro Gabriel; Córsico, Alejandro Hugo
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
catalogs
magnetic fields
stars: luminosity function, mass function
surveys
white dwarfs - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85002
Ver los metadatos del registro completo
| id |
SEDICI_f55612ef5571d0373485914bf0f55e5f |
|---|---|
| oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/85002 |
| network_acronym_str |
SEDICI |
| repository_id_str |
1329 |
| network_name_str |
SEDICI (UNLP) |
| spelling |
SDSS DR7 white dwarf catalogKleinman, S. J.Kepler, S. O.Koester, D.Pelisoli, IngridPeçanha, VivianeNitta, A.Costa, J. E. S.Krzesinski, J.Dufour, P.Lachapelle, F. R.Bergeron, P.Yip, Ching WaHarris, Hugh C.Eisenstein, Daniel J.Althaus, Leandro GabrielCórsico, Alejandro HugoCiencias Astronómicascatalogsmagnetic fieldsstars: luminosity function, mass functionsurveyswhite dwarfsWe present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs.Facultad de Ciencias Astronómicas y Geofísicas2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/85002enginfo:eu-repo/semantics/altIdentifier/issn/0067-0049info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/204/1/5info: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:UNLP2025-10-22T16:57:23Zoai:sedici.unlp.edu.ar:10915/85002Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:23.552SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
SDSS DR7 white dwarf catalog |
| title |
SDSS DR7 white dwarf catalog |
| spellingShingle |
SDSS DR7 white dwarf catalog Kleinman, S. J. Ciencias Astronómicas catalogs magnetic fields stars: luminosity function, mass function surveys white dwarfs |
| title_short |
SDSS DR7 white dwarf catalog |
| title_full |
SDSS DR7 white dwarf catalog |
| title_fullStr |
SDSS DR7 white dwarf catalog |
| title_full_unstemmed |
SDSS DR7 white dwarf catalog |
| title_sort |
SDSS DR7 white dwarf catalog |
| dc.creator.none.fl_str_mv |
Kleinman, S. J. Kepler, S. O. Koester, D. Pelisoli, Ingrid Peçanha, Viviane Nitta, A. Costa, J. E. S. Krzesinski, J. Dufour, P. Lachapelle, F. R. Bergeron, P. Yip, Ching Wa Harris, Hugh C. Eisenstein, Daniel J. Althaus, Leandro Gabriel Córsico, Alejandro Hugo |
| author |
Kleinman, S. J. |
| author_facet |
Kleinman, S. J. Kepler, S. O. Koester, D. Pelisoli, Ingrid Peçanha, Viviane Nitta, A. Costa, J. E. S. Krzesinski, J. Dufour, P. Lachapelle, F. R. Bergeron, P. Yip, Ching Wa Harris, Hugh C. Eisenstein, Daniel J. Althaus, Leandro Gabriel Córsico, Alejandro Hugo |
| author_role |
author |
| author2 |
Kepler, S. O. Koester, D. Pelisoli, Ingrid Peçanha, Viviane Nitta, A. Costa, J. E. S. Krzesinski, J. Dufour, P. Lachapelle, F. R. Bergeron, P. Yip, Ching Wa Harris, Hugh C. Eisenstein, Daniel J. Althaus, Leandro Gabriel Córsico, Alejandro Hugo |
| author2_role |
author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas catalogs magnetic fields stars: luminosity function, mass function surveys white dwarfs |
| topic |
Ciencias Astronómicas catalogs magnetic fields stars: luminosity function, mass function surveys white dwarfs |
| dc.description.none.fl_txt_mv |
We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs. Facultad de Ciencias Astronómicas y Geofísicas |
| description |
We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013 |
| 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/10915/85002 |
| url |
http://sedici.unlp.edu.ar/handle/10915/85002 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0067-0049 info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/204/1/5 |
| 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 |
| 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 |
| _version_ |
1846783186752765952 |
| score |
12.982451 |