First detailed analysis of multiple system V2083 Cyg

TL;DR

This paper provides the first detailed analysis of the multiple star system V2083 Cyg, combining light, radial velocity, and interferometric data to reveal its physical properties and complex structure.

Contribution

It introduces the first comprehensive study of V2083 Cyg, including the potential binary nature of the third component and discusses possible explanations for mass discrepancies.

Findings

Close subsystem contains two similar A7-8 stars

Third body orbits with a period of about 177 years

Mass discrepancy suggests the third may be a binary or the parallax value may be incorrect

Abstract

Main aim of this paper is the first detailed analysis of multiple system V2083 Cyg and to reveal its basic physical properties. The system was studied by method of the light and radial velocity curves analysis, together with the interferometric data of the visual pair obtained during a last century. There was found that the close subsystem contains two very similar stars of spectral type A7-8. Moreover, the third body is orbiting around this pair with period of about 177 years. Due to the discrepancy of total mass as derived from two methods, there arises that the third body is maybe also a binary, or some object with lower luminosity but higher mass than normal main-sequence star. Another explanation is that the Hipparcos value of parallax is incorrect and the system is much closer to the Sun.