New orbits based on speckle interferometry at SOAR. II

TL;DR

This paper presents new and revised orbital calculations for 44 close visual binary stars using speckle interferometry data from SOAR, including first-time orbits and dynamical parameter estimates.

Contribution

It provides 23 newly determined orbits and significant revisions for others, enhancing the understanding of binary star dynamics with updated observational data.

Findings

23 orbits determined for the first time

Median orbital period is 15.6 years

Includes dynamical parallaxes and mass estimates

Abstract

Orbits of 44 close and fast visual binaries are computed using the latest speckle observations; 23 orbits are determined for the first time, the rest are revisions, some quite substantial. Six combined orbits use radial velocities. The median period is 15.6 years, the shortest period is one year. Most stars are nearby late-type dwarfs. Dynamical parallaxes and estimates of the masses are derived from the orbital elements and the photometry of the components.