Light-Time Effect in the Eclipsing Binaries GO Cyg, GW Cep, AR Aur and V505 Sgr

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Authors	CHOCHOL Drahomír PRIBULLA Theodor VAŇKO Martin MAYER Pavel WOLF Marek NIARCHOS P.G. MANIMANIS V.N. BRÁT Luboš ZEJDA Miloslav
Year of publication	2006
Type	Article in Periodical
Magazine / Source	Astrophysics and Space Science
MU Faculty or unit	Faculty of Science
Citation
Field	Astronomy and astrophysics
Keywords	eclipsing binary;LITE;GO Cyg;GW Cep;AR Aur;V505 Sgr
Description	Orbital period changes of the eclipsing binaries GO Cyg and GW Cep are explained by the light time effect for the first time. New minima of the eclipsing binary AR Aur improve the predicted light time orbit. The light time orbit with the quadratic ephemeris of the binary matches the new observations of V505 Sgr better than the linear one. As the light time effect fits in corresponding OC diagrams of all four systems have been reaching extreme values, the observations of minima times in forthcoming years are highly desirable.
Related projects:	Fotometrický výzkum zákrytových dvojhvězd