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Paper: Outburst Activity of the Symbiotic System AG Dra
Volume: 496, Living Together: Planets, Host Stars and Binaries
Page: 240
Authors: Gális, R.; Hric, L.; Leedjärv, L.; Kundra, E.
Abstract: AG Dra is one of the best studied symbiotic systems. A period analysis of new and historical photometric data, as well as radial velocities, confirmed the presence of the two periods — about 550 days, caused by orbital motion, and around 350 days, related to pulsations of the cool component of AG Dra. In addition, the active stages change distinctively, but the outbursts recur with periods from 359 to 375 days.
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