Spectroscopic Analysis of the Double Lined Eclipsing Binary {\alpha}Vir

TL;DR

This study provides a detailed spectroscopic analysis of the double-lined eclipsing binary {}Vir, including orbital parameters, spectral disentangling, and stellar characteristics of both components based on 90 spectra.

Contribution

The paper introduces a comprehensive spectral and orbital analysis of {}Vir, utilizing spectrum disentangling and synthetic spectral fitting to determine stellar parameters.

Findings

Low eccentric orbit with e=0.002 and period of 4.01422 days.

Effective temperatures of primary and secondary are 25000K and 17000K.

Projected rotational velocities are approximately 180 km/s for the primary.

Abstract

{\alpha}Vir is a well known double-lined spectroscopic binary with a B-type for both components. In the present paper we have analyzed a total of 90 spectra obtained through 1992-2000. Spectral analysis are based on two spectral lines H(alpha) and HeI 6678 belong to H(alpha) region. Radial velocity analysis have suggested low eccentric orbit (e=0.002) at inclination (i=81.89+-2.34) and with 4d.01422 period, semi-amplitude k1=100 km/s, mass ratio q=0.49+-0.05 and mass function f(m) =0.547. Using KOREL program for spectrum disentangling we have been able to decompose the spectrum of the system to its primary and secondary components. Synthetic spectral analysis of both the individual and disentangled spectra has been performed and yielded effective temperatures Teff= 25000+-250 K, surface gravities log g=3.75+-0.25 and projected rotational velocities (v sin i= 180+-5 km/s) for the primary, while for the secondary they are Teff = 17000+-250 K, log g = 4.0+-0.25.