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We present new results of a spectroscopic and polarimetric investigation of the candidate young Herbig Ae/Be star HD 163296. Twenty two spectra of this object near the H ,H e i5876 and DNa i lines had been obtained in 1992{1995 at the Astrophysical National Laboratory of Brazil (LNA). In addition, forty seven high-resolution spectra in H and H were obtained at the ESO (Chile) in 1991{1992. VRI-polarimetry (about forty measurements of the Stokes parameters Q; U; V in each passband) were carried out at the SAAO (South Africa) in July 17{30, 1995. Striking prole variability has been found in all the lines on time scales from hours to months. Analysis of the proles revealed manifestations of a remote cool shell which is in active interaction with the variable kinemati- cally stratied stellar wind. Signs of cyclic positional vari- ations of the H and H emission peaks were observed during ve nights in July, 1991. Sinusoidal variations of the linear polarization parame- ters detected in July, 1995 are explained in the framework of a model involving magnetized gaseous condensation, rotating in the envelope with the period of 15 days. Marginal detection of circular polarization is also re- ported.

Cyclic phenomena in the circumstellar gaseous envelope of the candidate Herbig A0e star HD 163296