Spectroscopic orbits of subsystems in multiple stars. III

TL;DR

This paper presents spectroscopic orbital solutions for inner pairs in six nearby hierarchical multiple star systems, providing detailed orbital parameters and discussing individual system characteristics, including a potential low-mass stellar companion.

Contribution

It offers new spectroscopic orbital data for multiple star systems and combines radial velocity and resolved measurements for comprehensive orbital analysis.

Findings

Orbital parameters for six multiple star systems are derived.

Three systems have combined outer orbital elements.

HIP 115087 is identified as a low-inclination binary with a potential low-mass companion.

Abstract

Spectroscopic orbits are computed for inner pairs in six nearby hierarchical multiple systems (HIP 35733, 95106/95110, 105441, 105585/105569, 105947, and 109951). Radial velocities and resolved measurements, when available, are used to derive combined sets of outer orbital elements for three systems. Each multiple system is discussed individually. Additionally, HIP 115087 is a simple 7.9 day single-lined binary. Although the minimum companion mass is sub-stellar (in the brown dwarf desert regime), it appears to be a 0.2 solar-mass star in a low-inclination orbit.