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New analysis of ZZ Ceti star PG 2303+243

  • E. Pakštienė (a1), V. Laugalys (a1), J. Qvam (a2) and R. P. Boyle (a3)

Abstract

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.

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References

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Bergeron, P., Fontaine, G., Billères, M., & Boudreault, S., Green, E. M. 2004, ApJ, 600, 404
Pakštienė, E. 2013, EPJ Web of Conferences, 43, 05012
Pakštienė, E., Solheim, J. E., Handler, G., et al. 2011, MNRAS, 415, 1322
Romero, A. D., Corsico, A. H., Althaus, L. G., et al. 2012, MNRAS, 420, 1462
Vauclair, G., Dolez, N., & Chevreton, M. 1987, A&A, 175, L13
Vauclair, G., Belmonte, J. A., Pfeiffer, B., et al. 1992, A&A, 246, 547
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Keywords

New analysis of ZZ Ceti star PG 2303+243

  • E. Pakštienė (a1), V. Laugalys (a1), J. Qvam (a2) and R. P. Boyle (a3)

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