Apsidal motion in eccentric eclipsing binaries: V871 Aql, V345 Lac, V401 Lac and CR Sct

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Authors	WOLF Marek HARMANEC Petr ŠAROUNOVÁ Lenka ZEJDA Miloslav BOŽIČ Hrvoje HORNOCH Kamil KOZYREVA V. S. HYNEK T. KRÁL Lukáš
Year of publication	2004
Type	Article in Periodical
Magazine / Source	Astronomy and Astrophysics
MU Faculty or unit	Faculty of Science
Citation
Field	Astronomy and astrophysics
Keywords	eclipsing binary; apsidal motion;V871 Aql; V345 Lac; V401 Lac; CR Sct
Description	About thirty new times of minimum light recorded with photoelectric or CCD photometers were obtained for several little studied eccentric-orbit eclipsing binaries V871 Aql (P=3.0 d, e=0.13), V345 Lac ( 7.5 d, 0.46), V401 Lac ( 2.0 d, 0.16) and CR Sct ( 4.2 d, 0.09). Their O-C diagrams were analyzed using all reliable timings found in the literature and in all cases an apsidal motion was either discovered or confirmed. The new values for the elements of the apsidal motion were derived. We find periods of apsidal motion of about 255, 7000, 79.4 and 4400 years for V871 Aql, V345 Lac, V401 Lac and CR Sct, respectively. Partly based on photoelectric observations secured at the Hvar Observatory, Zagreb University, Croatia.
Related projects:	Fotometrický výzkum zákrytových dvojhvězd