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

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...

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Bibliographic Details
Published in:Astrophysics and space science 2006-08, Vol.304 (1-4), p.93-96
Main Authors: Chochol, D, Pribulla, T, Vako, M, Mayer, P, Wolf, M, Niarchos, P G, Gazeas, K D, Manimanis, V N, Brat, L, Zejda, M
Format: Article
Language:English
Subjects:
Astrophysics
Eclipsing binary stars
Extreme values
Light
Minima
Orbitals
Orbits
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Summary: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 O - C diagrams of all four systems have been reaching extreme values, the observations of minima times in forthcoming years are highly desirable.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-006-9160-6