Abstract
This paper contains an investigation of the way in which the determination of the apsidal motion may be affected by a change in the orbital period. The following cases are presented: a) the orbital period undergoes an abrupt change, b) the orbital period has a continuous variation, and c) the apsidal motion is affected by the presence of a third component.
In order to determine the apsidal motion from T2− T1differences or O − C diagrams, two methods are presented.
Finally, a new program for observations of primary and secondary minima is proposed.
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© 1974 Springer-Verlag, Berlin, Heidelberg
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Todoran, I. (1974). Apsidal Motion in Close Binaries with Variable Orbital Period. In: Mavridis, L.N. (eds) Proceedings of the First European Astronomical Meeting Athens, September 4–9, 1972. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-65666-8_6
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DOI: https://doi.org/10.1007/978-3-642-65666-8_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-65668-2
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