Time-dependent convection seismic study of five γ Doradus stars

Details Time-dependent convection seismic study of five γ Doradus stars Time-dependent convection seismic study of five γ Doradus stars

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005mnras.360.1143d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 360, Issue 3, pp. 1143-1152.

Other

19

Convection, Stars: Interiors, Stars: Oscillations, Stars: Variables: Other

Scientific paper

We apply for the first time the time-dependent convection (TDC) treatment of Gabriel and Grigahcène et al. to the photometric mode identification in γ Doradus (γ Dor) stars. We consider the influence of this treatment on the theoretical amplitude ratios and phase differences. Comparison with the observed amplitudes and phases of the stars γ Dor, 9 Aurigae, HD 207223 = HR 8330, HD 12901 and 48501 is presented and enables us to identify the degree l of the pulsation modes for four of them. We also determine the mode stability for different models of these stars. We show that our TDC models agree better with observations than with frozen convection models. Finally, we compare the results obtained with different values of the mixing-length parameter α.

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