IUE observations of CH Cygni continuum during 1979–1986
Hack, M.; Mikolajewska, J.; Selvelli, P. L.
Poland, Italy
Abstract
Variations of the UV continuum have been analyzed. The observed UV continuum may be reproduced by a superposition of a Kurucz model atmosphere (log g=2), Teff∼8500–15000 K) and optically thin hydrogen bound-free and free-free emission (Te∼ 1000 K). The temperature of the Kurucz atmosphere is the lowest at the maximum of brightness. The flat minimum in the UV integrated flux was observed in May–October 1985.