New analysis of ZZ Ceti star PG 2303+243

Autor:	J. Qvam, E. Pakštienė, R. P. Boyle, V. Laugalys
Rok vydání:	2013
Předmět:	Physics Space and Planetary Science Astronomy and Astrophysics Astrophysics Star (graph theory)
Zdroj:	Proceedings of the International Astronomical Union. 9:469-470
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921313015093
Popis:	The new photometric observations of PG 2303+243 were obtained in 2012 during a campaign carried out with three telescopes. The analysis of these observations is presented in this paper. We identified l = 1 and l = 2 pulsation modes. The pulsation periods were compared with theoretical ones for models of ZZ Ceti stars. This allowed us to estimate the physical parameters of PG 2303+243. The star seems to be cooler and has thicker hydrogen layer than it was thought before. We have derived M*/M⊙ = 0.66, Teff = 11014 K and log(MH/M*)=−4.246 for this star.
Databáze:	OpenAIRE
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