Fourier analysis of EX Draconis high-speed photometry

Details Fourier analysis of EX Draconis high-speed photometry Fourier analysis of EX Draconis high-speed photometry

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..330..359g&link_type=abstract

The Astrophysics of Cataclysmic Variables and Related Objects, Proceedings of ASP Conference Vol. 330. Edited by J.-M. Hameury a

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present and discuss the Scargle periodograms of fast-speed B-band optical photometry of the eclipsing dwarf nova EX Draconis during quiescence and outburst, obtained with the 1.2m telescope of the National Observatory of Athens (NOA) in July 2000. We report on the discovery of a 143 s periodicity which most likely is related to the spin period of the white dwarf. We also find periodicities near 115 and 123 seconds during outburst which may be caused by pulsations of the accreting white dwarf in response to the enhanced mass transfer rate.

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