White Dwarf Pulsations in the Cataclysmic Variables SDSS J0919+08 and VSX J0747+0650

Details White Dwarf Pulsations in the Cataclysmic Variables SDSS J0919+08 and VSX J0747+0650 White Dwarf Pulsations in the Cataclysmic Variables SDSS J0919+08 and VSX J0747+0650

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..526w&link_type=abstract

17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 526-529 (2010).

Physics

White Dwarfs, Cataclysmic Binary Stars, Brightness, Photometry, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Cataclysmic Binaries, Symbiotic Stars, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, Photometric, Polarimetric, And Spectroscopic Instrumentation

Scientific paper

The dwarf nova VSX J0747+0650 has pulsations at 238.2 s and 684.2 s (found only two years after its superoutburst), and is therefore a CV/ZZ star. Our observations of the accreting white dwarf SDSS0919+08 show that it occasionally has a brightness modulation at 214 s in addition to the known one near 260 s, establishing its credentials as a CV/ZZ pulsator rather than a rotator. The pulsations can grow in amplitude from undetectability to prominent on a time scale ~months.

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