Low resolution Ha spectroscopic observations of VW Cep performed in Ju
ly and August 1993 at Catania Astrophysical Observatory are reported.
A variable Ha emission from the secondary cooler component has been fo
und to be correlated with the presence of photospheric spots. The seco
ndary star shows an asymmetrical H alpha profile with blue-shifted abs
orption excess between the orbital phase 0(P).38 and 0(P).53, and a re
d-shifted excess from 0.(P)62 to 0.(P)95. It is suggested that the asy
mmetry is due to the absorption effect of mass how from the secondary
component, through the inner lagrangian point.