Bibcode
Provencal, J. L.; Thompson, S.; Montgomery, M.; Kanaan, A.; Shipman, H. L.; Dalessio, J.; Childers, D.; Clemens, C.; Rosen, R.; Henrique, P.; Kim, A.; Strickland, W.; Chandler, D.; Walter, B.; Watson, T. K.; Castanheira, B.; Wood, M.; Vennes, S.; Kepler, S. O.; Reed, M.; Nitta, A.; Kleinman, S. J.; Brown, T.; Kim, S.-L.; Sullivan, D.; Chen, Wen-Ping; Yang, M.; Shih, Chia-You; Jiang, X. J.; Sergeev, A. V.; Maksim, A.; Janulis, R.; Vats, H. O.; Baliyan, K. S.; Zola, S.; Baran, A.; Winiarski, M.; Ogloza, W.; Paparo, M.; Bognar, Z.; Papics, P.; Kilkenny, D.; Sefako, R.; Buckley, D.; Loaring, N.; Kniazev, A.; Silvotti, R.; Galleti, S.; Handler, G.; Nagel, T.; Vauclair, G.; Dolez, N.; Fremy, J. R.; Perez, J.; Almenara, J. M.; Fraga, L.
Bibliographical reference
Journal of Physics: Conference Series, Volume 172, Issue 1, pp. 012061 (2009).
Advertised on:
6
2009
Citations
0
Refereed citations
0
Description
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.