Astrometric Measurements of DUN93 AB; DUN94; DUN95 AB (and including CRU9007 AD and HJ4341 BC); DUN99 AB, AC and BC; DUN105; DUN117 AB and AC; DUN127 and DUN131 AC with Analysis using GAIA DR3 data

Abstract

This study continues a project to provide updated astrometric measurements for selected Dunlop double stars. DUN93 AB; DUN94; DUN95 AB (and including CRU9007 AD and HJ4341 BC); DUN99 AB, AC and BC; DUN105; DUN117 AB and AC; DUN127 and DUN131 AC were imaged using the Las Cumbres Observatory Global Telescope Network. Calibrated images were obtained and these were analysed using the software AstroImageJ to determine separation, position angle and delta magnitude. The physical distance separation was calculated using GAIA DR3 parallax data and the measure of apparent separation reported in this paper. The Harshaw score and Buccheim distance probability were also calculated.