GaiaHub: A method for combining data from the Gaia and Hubble space telescopes to derive improved proper motions for faint stars

Andrés del Pino, Mattia Libralato, Roeland P. van der Marel +6

We present GaiaHub, a publicly available tool that combines $Gaia$ measurements with $Hubble$ $Space$ $Telescope$ ($HST$) archival images to derive proper motions (PMs). It increas…