Autor:	Kepler, S. O., Fraga, Luciano, Winget, Don Earl, Bell, Keaton, Corsico, Alejandro H., Werner, Klaus
Rok vydání:	2014
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/stu1019
Popis:	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, Rauch and Kepler (2014) indicated Teff=120 000+/-10 000 K, log g=7.0+/-0.3, mass M=0.52+/-0.02 Msun, 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. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1405.5075 Zobrazit plný text záznamu View this record from Arxiv