1996A&A...310..477F

The highly Doppler broadened line profiles of nova V1500 Cyg are well resolved on spectra taken at the Torun Observatory, Poland. Their analysis enables information on the kinematics and structure of the ejected envelope to be obtained. One might, both from observations of other novae and general considerations, expect the envelope in very early stages after the initial explosion before optical maximum to have the motions of a Hubble flow. Simple types of calculated line profile are compared with what was observed for Hβ. In fact the profiles appear to be compatible with a Hubble flow at that time only if one supposes that there were significant deviations from spherical symmetry. The change in line profiles near maximum is compatible with a model, in which a faster wind started to sweep up the earlier ejected envelope.