Preliminary XCOV26 results for EC14012-1446

Details Preliminary XCOV26 results for EC14012-1446 Preliminary XCOV26 results for EC14012-1446

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jphcs.172a2061p&link_type=abstract

Journal of Physics: Conference Series, Volume 172, Issue 1, pp. 012061 (2009).

Physics

Scientific paper

EC14012-1446 is a hydrogen atmosphere (DA) white dwarf pulsator. Its rich pulsation spectrum displays a range of excited modes with complex multiplet structure, in addition to numerous combination frequencies. In April 2008, EC14012-1446 was the primary target of XCOV26. We obtained over 300 hrs of nearly continuous high speed photometry with the goal of using the nonlinear pulse shapes to empirically determine the parameters of the convection zone. The Fourier transform (FT) of the light curve contains power between 1000 to 4000 μHz, with the dominant peak at 1234 μHz. We find 13 independent frequencies distributed in 8 modes, as well as a myriad of combination frequencies. In the following, we present preliminary results and lay the groundwork for future investigation leading to light curve fitting of EC14012-1446.

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