First analysis of eight Algol-type binaries: EI Aur, XY Dra, BP Dra, DD Her, VX Lac, WX Lib, RZ Lyn, and TY Tri

TL;DR

This study presents the first light curve analysis of eight Algol-type eclipsing binaries using online photometry, revealing third light contributions and potential third bodies affecting their orbital periods.

Contribution

It provides the first detailed light curve analysis of these eight binaries and identifies third light and third bodies in some systems.

Findings

Detected third light in EI Aur and BP Dra.

Identified third bodies in XY Dra and VX Lac.

Derived 468 new times of minima for period analysis.

Abstract

The available photometry from the online databases were used for the first light curve analysis of eight eclipsing binary systems EI Aur, XY Dra, BP Dra, DD Her, VX Lac, WX Lib, RZ Lyn, and TY Tri. All these stars are of Algol-type, having the detached components and the orbital periods from 0.92 to 6.8 days. For the systems EI Aur and BP Dra the large amount of the third light was detected during the light curve solution. Moreover, 468 new times of minima for these binaries were derived, trying to identify the period variations. For the systems XY Dra and VX Lac the third bodies were detected with the periods 17.7, and 49.3 years, respectively.