Analysis of the Massive Eclipsing Binary V1441\,Aql

TL;DR

This paper presents spectroscopic and photometric analysis of the eclipsing binary V1441 Aql, revealing its stellar parameters, rapid rotation, and estimated age and distance, contributing to understanding of massive binary star evolution.

Contribution

It provides detailed stellar parameters and evolutionary status of V1441 Aql, a double-contact massive binary, using new spectroscopic data and photometric analysis.

Findings

V1441 Aql consists of a B3 IV primary and B9 III secondary.

The system is a double-contact binary with rapid rotation.

Estimated age of the system is about 30 million years, at a distance of 550 parsecs.

Abstract

We present new spectroscopic observations of the early type, double-lined eclipsing binary V1441\,Aql. The radial velocities and the available photometric data obtained by $ASAS$ is analysed for deriving the parameters of the components. The components of V1441\,Aql are shown to be a B3\,IV primary with a mass M$_p$=8.02$\pm$0.51 M$_{\odot}$ and radius R$_p$=7.33$\pm$0.19 R$_{\odot}$ and a B9 III secondary with a mass M$_s$=1.92$\pm$0.14 M$_{\odot}$ and radius R$_s$=4.22$\pm$0.11 R$_{\odot}$. Our analyses show that V1441\,Aql is a double-contact system with rapidly rotating components. Based on the position of the components plotted on the theoretical Hertzsprung-Russell diagram, we estimate that the ages of V1441\,Aql is about 30\,Myr, neglecting the effects of mass exchange between the components. Using the UBVJHK magnitudes and interstellar absorption we estimated the mean distance to the system V1441\,Aql as 550$\pm$25\,pc.