Correlated line profile variability in HD 191765 and HD 4004

A. Niedzielski

Centre for Astronomy, N. Copernicus University,
ul. Gagarina 11, 87-100 Torun, Poland

First results of recent spectral monitoring of HD 191765 and HD 4004 are presented. We describe the profile variations of several emission lines observed simultaneously in wide optical range. The line profiles observed at different phases of known period of HD 191765 are compared among each other. Similar analysis is presented for HD 4004 as well. On the basis of our observations we discuss the physical conditions in the envelopes of both stars.