Discovery of a new PG 1159 (GW Vir) pulsator

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 numb...

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Detalles Bibliográficos
Autores principales: Kepler, S.O., Fraga, Luciano, Winget, Don Earl, Bell, Keaton, Córsico, Alejandro Hugo, Werner, Klaus
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85433
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85433
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
spellingShingle Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
Kepler, S.O.
Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
Discovery of a new PG 1159 (GW Vir) pulsator
topic_facet Ciencias Astronómicas
stars: individual: SDSS J075415.12 + 085232.18
white dwarfs
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.
format Articulo
Articulo
author Kepler, S.O.
Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
author_facet Kepler, S.O.
Fraga, Luciano
Winget, Don Earl
Bell, Keaton
Córsico, Alejandro Hugo
Werner, Klaus
author_sort Kepler, S.O.
title Discovery of a new PG 1159 (GW Vir) pulsator
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
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/85433
work_keys_str_mv AT keplerso discoveryofanewpg1159gwvirpulsator
AT fragaluciano discoveryofanewpg1159gwvirpulsator
AT wingetdonearl discoveryofanewpg1159gwvirpulsator
AT bellkeaton discoveryofanewpg1159gwvirpulsator
AT corsicoalejandrohugo discoveryofanewpg1159gwvirpulsator
AT wernerklaus discoveryofanewpg1159gwvirpulsator
bdutipo_str Repositorios
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