Orbit determination of visual binary systems observed with CST telescope in 2010-2013

TL;DR

This study presents new orbital solutions for 15 visual binary systems observed with the CST telescope between 2010 and 2013, using advanced imaging and orbital calculation techniques to improve understanding of their properties and evolution.

Contribution

It introduces new orbital solutions for four binaries, revises existing orbits for 11 systems, and applies novel methods like Binary Deblending for mass estimation.

Findings

First orbital solutions for four binaries.

Identification of a binary with two M-type dwarfs.

Discovery of a wide faint companion and analysis of a quadruple system.

Abstract

We present new orbital solutions for 15 binaries, which were astrometrically measured during 2010-2013. We observe the binary systems using the FastCam ``lucky-imaging'' camera, installed at the 1.5-m Carlos S\'anchez Telescope (CST) at the Observatorio del Teide, Tenerife (Spain). We present first orbital solutions for four binaries and revise orbits for other 11 systems. We apply two orbital calculation techniques, the ``three-dimensional grid search method'' and the Docobo's analytical method. In addition, we use our tool ``Binary Deblending'', which is based on deblending the entire observed multiband photometry into fundamental and photometric parameters for each stellar component based on PARSEC isochrones. This method allows us to obtain the total mass for all systems. Our findings include the identification of a binary system consisting of two M-type dwarfs (WOR 19), a binary of evolved components (twin F6IV-V stars) in BU 1292, accompanied by a newly discovered wide (10.5 arcsec) and faint companion with G=17.05 mag. Additionally, we explore the X-ray emission system STF 147 and a very young quadruple system, WDS 04573+5345. This comprehensive analysis significantly contributes to our understanding on the formation and evolution of these stellar systems.