Poster abstract details

Gamma Doradus stars are very interesting from an asteroseismic point of view. Since they show g-mode pulsations, it allows us to probe the deep stellar interior. Since the g-modes are associated to periods of the order of a day (0.4--3 days), it is observationally a challenging task to obtain a good phase coverage. Consequently, uninterrupted time-series from space are providing new opportunities and promise a revolution in the study of gamma Dor stars. The star HD171834 is one of the two candidate gamma Dor stars in the asteroseismic core program of the CoRoT satellite mission, and has been observed for 149 days in 2008. We present preliminary results on the analysis of the CoRoT lightcurve and spectroscopic ground-based time-series, consisting of more than 1300 spectra, obtained in the framework of a multi-site campaign. From the ground, periods of 2 hours to 1 day are detected for this fast rotator (vsini ~ 70 km/s).