Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-25T16:45:24.809Z Has data issue: false hasContentIssue false

New analysis of ZZ Ceti star PG 2303+243

Published online by Cambridge University Press:  18 February 2014

E. Pakštienė
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, Lithuania; email: [email protected]
V. Laugalys
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, Lithuania; email: [email protected]
J. Qvam
Affiliation:
Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway
R. P. Boyle
Affiliation:
Vatican Observatory Research Group, Steward Observatory, Tucson, Arizona 85721, U.S.A.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

References

Bergeron, P., Fontaine, G., Billères, M., & Boudreault, S., Green, E. M. 2004, ApJ, 600, 404Google Scholar
Pakštienė, E. 2013, EPJ Web of Conferences, 43, 05012Google Scholar
Pakštienė, E., Solheim, J. E., Handler, G., et al. 2011, MNRAS, 415, 1322Google Scholar
Romero, A. D., Corsico, A. H., Althaus, L. G., et al. 2012, MNRAS, 420, 1462CrossRefGoogle Scholar
Vauclair, G., Dolez, N., & Chevreton, M. 1987, A&A, 175, L13Google Scholar
Vauclair, G., Belmonte, J. A., Pfeiffer, B., et al. 1992, A&A, 246, 547Google Scholar