An investigation of planetary nebulae accompanying PG 1159 central stars, based on Gaia DR2 measurements

This article discusses the physical and kinematical characteristics of planetary nebulae accompanying PG1159 central stars. The study is based on parallax proper motion measurements recently offered by Gaia space mission. Two approaches were used to investigate properties sample. results revealed that most studied arise from progenitor stars mass range; $0.9-1.75$\,M$_{\odot}$. Furthermore, they tend live within Galactic thick-disk moving with an average peculiar velocity $61.7\pm19.2$\,km\,s$^{-1}$ at a mean vertical height $469\pm79$ pc. locations H-R diagram indicate have final stellar evolutionary age $0.58\pm0.08$\,M$_{\odot}$ $25.5\pm5.3 \rm{x}10^3$ yr, respectively. We found good agreement between dynamical their companion ($28.0\pm6.4 yr).