Physical parameters of 62 eclipsing binary stars using the ASAS-3 data$-$I

TL;DR

This study analyzes 62 eclipsing binary stars using ASAS-3 V band data, refining their periods and physical parameters through light curve modeling and spectroscopic data integration.

Contribution

It provides detailed physical parameters of 62 binaries, improving period accuracy and combining photometric and spectroscopic data for reliable estimations.

Findings

Refined periods and ephemeris for 62 binaries.

Derived physical and geometrical parameters using Wilson-Devinney modeling.

Used spectroscopic mass ratios to enhance parameter accuracy.

Abstract

We present a detailed light curve analysis of publicly available V band observations of 62 binary stars, mostly contact binaries, obtained by the All Sky Automated Survey (ASAS)-3 project between 2000 and 2009. Eclipsing binaries are important astronomical targets for determining the physical parameters of component stars from the geometry. They provide an independent direct method of measuring the radii of stars. We improved the ASAS determined periods, ephemeris and obtained the Fourier parameters from the phased light curves of these 62 stars. These Fourier parameters were used for preliminary classification of the stars in our sample. The phased light curves were then analysed with the aid of the Wilson-Devinney light curve modelling technique in order to obtain various geometrical and physical parameters of these binaries. The spectroscopic mass ratios as determined from the the radial velocity measurements available in the literature were used as one of the inputs to the light curve modelling. Thus reliable estimations of parameters of these binaries were obtained with combined photometric and spectroscopic data and error estimates were made using the heuristic scan method.