Multiwavelength Observations of the Symbiotic Star AG Dra During 1979-1995
Greiner, J.; Altamore, A.; González-Riestra, R.; Friedjung, M.; Viotti, R.; Mattei, J.; Montagni, F.; Maesano, M.
Italy, United States, Brazil, Germany, France
Abstract
Since 1980 the high velocity symbiotic system AG Dra has undergone three phases of activity (or "outbursts") which were extensively observed in optical, ultraviolet and X-ray bands. We describe the historical light curve of the star, and summarize 17 years of UV monitoring with the IUE satellite.