Poster abstract details

Strange modes are radial or non-radial pulsations trapped into a small cavity in
the superficial layers or even in the atmosphere of very high L/M ratio stars
(e.g., Saio et al. 1998). The CoRoT data of O and B stars point out that strange
modes may be present in some of them (e.g., Degroote et al., this conference).
We computed non-adiabatic frequency spectra of massive star models representative of these CoRoT targets and we study here the effect of adopting different atmosphere models on the strange mode propagation regions, frequencies and mode excitations. We compare our theoretical predictions with the characteristics found from the CoRoT observations.