# Continued Kinematic and Photometric Investigations of Hierarchical Solar-Type Multiple Star Systems

## TL;DR

This study uses advanced imaging techniques to confirm and discover multiple star systems among nearby solar-type stars, providing new orbital data and enhancing understanding of stellar multiplicity.

## Contribution

It presents new high-resolution observations confirming and discovering multiple star systems, including the first orbit calculation for HIP 103455, thus improving the completeness of nearby stellar multiplicity surveys.

## Key findings

- Confirmed physical status of binaries through proper motion and orbital motion.
- Discovered a new candidate companion to HIP 95309.
- Computed the first orbit of HIP 103455 with a 68-year period.

## Abstract

We observed 15 of the solar-type binaries within 67 pc of the Sun previously observed by the Robo-AO system in the visible, with the PHARO near-IR camera and the PALM-3000 adaptive optics system on the 5 m Hale telescope. The physical status of the binaries is confirmed through common proper motion and detection of orbital motion. In the process we detected a new candidate companion to HIP 95309. We also resolved the primary of HIP 110626 into a close binary making that system a triple. These detections increase the completeness of the multiplicity survey of the solar-type stars within 67 pc of the Sun. Combining our observations of HIP 103455 with archival astrometric measurements and RV measurements, we are able to compute the first orbit of HIP 103455 showing that the binary has a 68 yr period. We place the components on a color-magnitude diagram and discuss each multiple system individually.