A mixture-model fit to Gaia DR2 parallaxes alone yields a catalog of 120 Milky Way globular cluster parallaxes and confirms the Gaia zero-point offset at about -27.6 microarcseconds.
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Gaia Parallax of Milky Way Globular Clusters -- A Solution of Mixture Model
A mixture-model fit to Gaia DR2 parallaxes alone yields a catalog of 120 Milky Way globular cluster parallaxes and confirms the Gaia zero-point offset at about -27.6 microarcseconds.