Third components with elliptical orbits in the eclipsing binaries: BD and, SV Cam, V0836 Cyg & XZ CMi

TL;DR

This paper investigates four eclipsing binary stars with cyclic O-C variations, analyzing their third components and orbital characteristics to understand mass transfer and third body influences.

Contribution

It presents new findings on the third components of four eclipsing binaries, including their mass transfer rates and possible third body masses, based on O-C diagram analysis.

Findings

Cyclic O-C variations observed in all four stars.

Computed mass transfer rates for each star.

Estimated minimum masses of third components.

Abstract

This is our regular research in the field of cyclic O-C changes and third components. In this article the results of four new stars investigation is described. These stars are: BD And, SV Cam, V0836 Cyg and XZ CMi. All of them have cyclic O-C curve with linear (BD And, SV Cam and XZ CMi) or parabolic trend (V0836 Cyg). We computed the mass transfer rate, minima possible mass of the third component and their errors for each of the researched stars.