New analysis of ZZ Ceti star PG 2303+243

Author:

Pakštienė E.,Laugalys V.,Qvam J.,Boyle R. P.

Abstract

AbstractThe 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.

Publisher

Cambridge University Press (CUP)

Subject

Astronomy and Astrophysics,Space and Planetary Science

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