SIMBAD references

We study the rotational component of the wind in the envelope of the Be star γ Cas. We have computed scenarios based on the axi-symmetric radiative wind model that we have developed for this star. We obtain line profiles and predicted interferometric observables from long baseline Michelson interferometry. It turns out that the models with constant and solid body rotation can be ruled out. It is also shown that classical technics as spectroscopy as well as interferometry cannot distinguish between the angular momentum conservation (β=1.0), the Keplerian motion (β=0.5) and β=0.25 models. Besides, we have computed theoretical photocenter displacement as a fuction of wavelength in the North-South and East-West directions and also in the sky plane. We conclude that only technics which are able to follow the photocenter displacement with wavelength, as Michelson spectro-interferometry or differential speckle interferometry would be able to infer the actual rotational law in the envelope of γ Cas.