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Paper: Asteroseismology of the ZZ Ceti Star WD 0246+326
Volume: 509, 20th European Workshop on White Dwarfs (EuroWD16)
Page: 295
Authors: Li, C.; Fu, J.; Fox-Machado, L.; Su, J.
Abstract: Asteroseismology is the unique tool to explore the internal structures of pulsating stars. Time series photometric observations were made for the pulsating DA white dwarf (ZZ Ceti star) WD 0246+326 in 2014 with a bi-site observation campaign. A few frequencies were detected including several multiplets. With the complement of earlier observed frequencies present in the literature, the frequencies are identified as either l = 1 or l = 2 modes. From the multiplets, the rotation period of WD 0246+326 is derived. The value of the average period spacing of the l = 1 modes indicates that WD 0246+326 may be a massive ZZ Ceti star. Theoretical models were constructed to constrain the stellar mass and the effective temperature by fitting the frequencies of the eigenmodes of the models with the observed frequencies.
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