Spectroscopic behaviour of the Herbig Be star HD 200775 around its maximumactivity in 1997

We present the results of high-resolution spectroscopic observations of the pre-main-sequence (PMS) Herbig Be star HD 200775 obtained between August 1 994 and December 1999. The behaviour of H alpha, H beta and He I before, du ring, and after the last high-activity event of the object in 1997 is studi ed. A complex picture of the circumstellar evolution in this period is disc ussed. It is concluded that the results of observations can be interpreted in the framework of a model with a variable stellar wind originating from t he star. We emphasize the importance of coordinated high-resolution spectro scopic observations for further understanding the star's behaviour.