Time Dependence of the UV Resonance Lines in the Cataclysmic Variable Star VW HYI
Özkan, M. T.; Ak, T.; Saygac, A. T.; Esenoglu, H. H.; Guler, S.
Turkey, Spain
Abstract
In this work, we study orbital variations in the ultraviolet resonance lines of the SU UMa type dwarf nova VW Hyi examining spectra in the data archive of the International Ultraviolet Explorer (IUE). We show that VW Hyi exhibits an orbital and long term variability in terms of UV line profiles and continuum flux at 1450 A during superoutburst.