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Abstract: We present an extensive analysis of O-C diagrams constructed by previously published times of minima and updated by photometric observations carried out at Mythodea Observatory (Astrophysics Laboratory, Department of Physics, University of Patras). A two-companion model is attributed to the over-contact (W UMa type) binary system TZ Boo according to a Light-Time Effect (LITE), while in the case of the post-common envelope binary NSVS 14256825 a Jovian type circumbinary companion is the most plausible explanation of the apparent period variation.
Note:
This paper was presented at the conference "Universe of Binaries, Binaries in the Universe"
held in Telč, Czech Republic, September 7-11, 2019.
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Last update: October 26, 2020