Spectroscopic binary orbits from ultraviolet radial velocities. Paper 9: Y Cygni (HD 198846)
Stickland, D. J.; Lloyd, C.; Pachoulakis, I.; Koch, R. H.; Pfeiffer, R. J.
United Kingdom, United States
Abstract
The paper presents spectroscopic binary orbits of Y Cygni obtained from the results of a three-day observations (covering 16 hours of each day) of this eclipsing binary, made by the IUE satellite at the end of May 1990. Full cross-correlation reduction of high-dispersion spectra secured over the three days allowed the production of an orbital solution with a precision comparable to the best results obtained from the ground. Spectroscopic determination of apsidal motion, yields a value very similar to that obtained by Gimenez et al. (1987).