EAS Publications Series
Volume 38, 2009Nonlinear Pulsations and Hydrodynamics of Cepheids
|Page(s)||107 - 114|
|Published online||15 August 2009|
M. Goupil, Z. Kolláth, N. Nardetto and P. Kervella (eds)
EAS Publications Series, 38 (2009) 107-114
Mode Identification with Cepheid Phase-lag
Konkoly Observatory, 1525 Budapest,
PO Box 67, Hungary
2 Department of Physics, University of Florida, Gainesville, FL 32611-8440, USA
A large model survey with the Florida-Budapest hydrodynamical code has revisited the Cepheid phase-lag problem. A good agreement between the models and the available observational data has been found for normal amplitude Cepheids. The phase-lag is a method for mode identification that is complementary to that of Fourier decomposition coefficients. In this contribution we exploit its potential in identifying the pulsational mode of Cepheids. The possible application of the phase lag as a test for ultra-low amplitude pulsation is discussed as well.
© EAS, EDP Sciences, 2009
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