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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85433
Ver los metadatos del registro completo
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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 |
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2014 |
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eng |
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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) |
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