[en] We apply the Time-Dependent Convection (TDC) treatment of Gabriel \cite{Gabriel1996} and Grigahcène \cite{Grigahcene} to the mode identification and seismic study of delta Sct stars. We compare the non-adiabatic phase-lags obtained with TDC and Frozen Convection (FC) treatments and show that they are very different at the red side of the instability strip. Finally, we compare the phase differences between light and velocity curves observed for the star 1 Mon with the theoretical predictions of TDC and FC models. The much better agreement found with the TDC models enables us to identify the modes of this star with a higher degree of confidency.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Dupret, Marc-Antoine ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique
Grigahcène, A.; Instituto de Astrofísica de Andalucía-CSIC, Apartado 3004, 18080 Granada, Spain ; CRAAG - Algiers Observatory BP 63 Bouzareah 16340, Algiers, Algeria
Garrido, R.; Instituto de Astrofísica de Andalucía-CSIC, Apartado 3004, 18080 Granada, Spain
De Ridder, J.; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven , Celestijnenlaan 200 B, 3001 Leuven, Belgium
Scuflaire, Richard ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA)
Gabriel, Maurice ; Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Application of time-dependent convection models to the photometric mode identification in delta Scuti stars
