Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-03-19
New Astron.13:405-413,2008
Astronomy and Astrophysics
Astrophysics
14 pages, 8 figures
Scientific paper
10.1016/j.newast.2007.12.007
Six semi-detached Algol-type binaries lacking a period analysis were chosen to test for a presence of a third body. The O-C diagrams of these binaries were analyzed with the least-squares method by using all available times of minima. Also fourteen new minima, obtained from our observations, were included in the present research. The light-time effect was adopted as a main factor for the detailed description of the long-term period changes. Third bodies were found with orbital periods from 46 up to 84 years, and eccentricities from 0.0 to 0.78 for the selected binaries. The mass functions and the minimal masses of such bodies were also calculated.
Liakos Alexios
Niarchos Panagiotis
Wolf Manfred
Zasche Petr
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