GAMMA-CASSIOPEIAE REVISITED BY SPECTRALLY RESOLVED INTERFEROMETRY

We present a model for the Be star gamma Cassiopeiae which is based an spectroscopic and interferometric data collected with the Grand Inter ferometre a 2 Telescopes (GI2T) in southern France. Our model assumes a standard radiation-driven wind in the polar regions. Using a paramet rized and axisymmetric scheme we deduce the wind for other stellar lat itudes. The comparison of computed and observed H alpha profiles durin g October and November 1993, together with the interferometric measure ments, allows us to constrain both the density and velocity relationsh ips present in the equatorial plane. For the first time we have shown that a model of a radiative wind driven by optically thin lines can ac count well for our angular/spectral resolution data.