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On the Apsidal Motion of Thirteen Eclipsing Binaries

Zasche P.

Acta Astronomica

2012

Vol. 62, No. 1

97--111

Main aim of this paper is the first light curve and apsidal motion analysis of thirteen eccentric eclipsing binaries and determination of their basic physical properties. All of the systems were studied by the method of period analysis of times of minima and the light curve analysis. Many new times of minima were derived and collected from the data obtained by the automatic, robotic or satellite telescopes. This allows us to study the apsidal motion in these systems in detail for the first time. From the light curve analysis the first rough estimations of the physical properties of these systems were obtained. The analyzed systems undergo an apsidal motion with the following periods in years: AR CMa (44±10), OZ Hya (117±53), V498 Mon (62±4), V521 Mon (217±37), V684 Mon (74±20), V730 Mon (39±12), GV Nor (197±67), NS Nor (516±230), TZ Pyx (157±37), V385 Sco (1926±980), V629 Sco (56±17), V881 Sco (131±48), V1082 Sco (186±280).