An analysis of the photometric variation of the symbiotic star AG Draconis in quiescence

Details An analysis of the photometric variation of the symbiotic star AG Draconis in quiescence An analysis of the photometric variation of the symbiotic star AG Draconis in quiescence

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...335..545f&link_type=abstract

Astronomy and Astrophysics, v.335, p.545-548 (1998)

Astronomy and Astrophysics

Astrophysics

14

Stars: Novae, Cataclysmic Variables, Stars: Binaries: Symbiotic, Stars: Individual: Ag Dra

Scientific paper

The photometric variations of the symbiotic binary AG Dra have been analyzed. Changes in the U band variations in quiescence between orbital cycles are most easily explained by changes in the cool component wind. The small variations of B and V in quiescence seem to require an additional mechanism. Period analysis of the data from the quiescent stage between two outbursts (1986 - 1994) gave a value for the period in the U band near the orbital period. However new periods were detected with the values of 356 and 350 days in the B and V bands respectively, which is strikingly close to the interval between the two large maxima in B and V, seen during activity.

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