1. Preliminary result of Asteroseismology Study for the ZZ Ceti Star KUV 08368+4026.
- Author
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Li, C., Fu, J. N., Vauclair, G., Machado, L. Fox, Alvarez, M., Su, J., Chevreton, M., Michel, R., Yang, X. H., Li, Y., Zhang, Y. P., and Dolez, N.
- Subjects
ASTEROSEISMOLOGY ,WHITE dwarf stars ,MOLECULAR structure ,ASTRONOMICAL observations ,HYDROGEN ,FLARE stars - Abstract
KUV 08368+4026 was considered a member of ZZ Ceti stars with large amplitudes and frequencies around a narrow range of 1.6 mHz and 2.0 mHz. As the first effort of asteroseismological study for KUV 08368+4026 since the discovery of its variability in 1996, a single-site run in February of 2009 and a 3-site observation campaign from December of 2009 to January of 2010 for KUV 08368+4026 were carried out in China and Mexico. More than 15,000 frames on 32 nights were obtained. 19 frequencies were distinguished in the datasets with 8 frequencies identified as independent modes. These results are helpful in determining stellar parameters including mass, rotation period, hydrogen mass fraction, and in constructing practical stellar and oscillation models, which will bring new knowledge about the internal structures of ZZ Ceti stars. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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