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Close eclipsing binary BD And: a triple system

Perdelwitz, V.; Kundra, E.; Guenther, E. +5 more

BD And is a fairly bright (V = 10.8), active and close (P ∼ 0.9258 days) eclipsing binary. The cyclic variability of the apparent orbital period as well as third light in the light curves indicate the presence of an additional late-type component. The principal aim is the spectroscopic testing of the third-body hypothesis and determination of abso…