HST and Optical Observations of Three Pulsating Accreting White Dwarfs in Cataclysmic Variables

Details HST and Optical Observations of Three Pulsating Accreting White Dwarfs in Cataclysmic Variables HST and Optical Observations of Three Pulsating Accreting White Dwarfs in Cataclysmic Variables

2006-12-19

arxiv.org/abs/astro-ph/0612529v1

Astronomy and Astrophysics

Astrophysics

28 pages, 11 figures

Scientific paper

10.1086/511854

Ultraviolet observations using the Solar Blind Channel on the Hubble Space Telescope provide light curves and low resolution spectra of three pulsating white dwarfs in the cataclysmic variables SDSS013132.39-090122.3, SDSSJ161033.64-010223.3 and SDSSJ220553.98+115553.7. The UV light curves show enhanced pulsation amplitudes over those from simultaneous and previous optical photometry, while the UV-optical spectra are fit with white dwarf temperatures near 15,000K. These temperatures place the accreting white dwarfs outside the instability zone for non-interacting DAV white dwarfs and show that the instability strip is complex for accreting white dwarfs.

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