Discovery of a new PG 1159 (GW Vir) pulsator

Autores
Kepler, S.O.; Fraga, Luciano; Winget, Don Earl; Bell, Keaton; Córsico, Alejandro Hugo; Werner, Klaus
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the discovery of pulsations in the spectroscopic PG 1159 type pre-white dwarf SDSS J075415.12 + 085232.18. Analysis of the spectrum by Werner et al. indicated Teff = 120 000 ± 10 000 K, log g = 7.0 ± 0.3, mass M = 0.52 ± 0.02M⊙, C/He = 0.33 by number. We obtained time series images with the SOAR 4.1 m telescope and 2.1 m Otto Struve telescope at McDonald Observatory and show the star is also a variable PG 1159 type star, with dominant period of 525 s.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
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:10915/85433
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/85433
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Discovery of a new PG 1159 (GW Vir) pulsatorKepler, S.O.Fraga, LucianoWinget, Don EarlBell, KeatonCórsico, Alejandro HugoWerner, KlausCiencias Astronómicasstars: individual: SDSS J075415.12 + 085232.18white dwarfsWe report the discovery of pulsations in the spectroscopic PG 1159 type pre-white dwarf SDSS J075415.12 + 085232.18. Analysis of the spectrum by Werner et al. indicated T<SUB>eff</SUB> = 120 000 ± 10 000 K, log <i>g</i> = 7.0 ± 0.3, mass M = 0.52 ± 0.02M⊙, C/He = 0.33 by number. We obtained time series images with the SOAR 4.1 m telescope and 2.1 m Otto Struve telescope at McDonald Observatory and show the star is also a variable PG 1159 type star, with dominant period of 525 s.Facultad de Ciencias Astronómicas y Geofísicas2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2278-2281http://sedici.unlp.edu.ar/handle/10915/85433enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1019info: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:UNLP2025-10-22T16:57:17Zoai:sedici.unlp.edu.ar:10915/85433Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:17.886SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Discovery of a new PG 1159 (GW Vir) pulsator
title Discovery of a new PG 1159 (GW Vir) pulsator
spellingShingle Discovery of a new PG 1159 (GW Vir) pulsator
Kepler, S.O.
Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
title_short Discovery of a new PG 1159 (GW Vir) pulsator
title_full Discovery of a new PG 1159 (GW Vir) pulsator
title_fullStr Discovery of a new PG 1159 (GW Vir) pulsator
title_full_unstemmed Discovery of a new PG 1159 (GW Vir) pulsator
title_sort Discovery of a new PG 1159 (GW Vir) pulsator
dc.creator.none.fl_str_mv Kepler, S.O.
Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
author Kepler, S.O.
author_facet Kepler, S.O.
Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
author_role author
author2 Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
topic Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
dc.description.none.fl_txt_mv We report the discovery of pulsations in the spectroscopic PG 1159 type pre-white dwarf SDSS J075415.12 + 085232.18. Analysis of the spectrum by Werner et al. indicated T<SUB>eff</SUB> = 120 000 ± 10 000 K, log <i>g</i> = 7.0 ± 0.3, mass M = 0.52 ± 0.02M⊙, C/He = 0.33 by number. We obtained time series images with the SOAR 4.1 m telescope and 2.1 m Otto Struve telescope at McDonald Observatory and show the star is also a variable PG 1159 type star, with dominant period of 525 s.
Facultad de Ciencias Astronómicas y Geofísicas
description We report the discovery of pulsations in the spectroscopic PG 1159 type pre-white dwarf SDSS J075415.12 + 085232.18. Analysis of the spectrum by Werner et al. indicated T<SUB>eff</SUB> = 120 000 ± 10 000 K, log <i>g</i> = 7.0 ± 0.3, mass M = 0.52 ± 0.02M⊙, C/He = 0.33 by number. We obtained time series images with the SOAR 4.1 m telescope and 2.1 m Otto Struve telescope at McDonald Observatory and show the star is also a variable PG 1159 type star, with dominant period of 525 s.
publishDate 2014
dc.date.none.fl_str_mv 2014
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/10915/85433
url http://sedici.unlp.edu.ar/handle/10915/85433
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/10.1093/mnras/stu1019
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
2278-2281
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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