We find 251 candidate members, 200 of which have a literature radial velocity, and 70 of which are new candidate members with TGAS astrometry. Our method extends an existing method and supports the mixed presence of stars with and without radial velocities. This method has an iterative component to deal with ‘outliers’, caused for instance by double stars or escaping members. We subsequently derive improved parallaxes through maximum-likelihood kinematic modelling of the cluster. By assuming that all cluster members move with the mean cluster velocity to within the velocity dispersion, we use the observed and the expected motions of the stars to determine individual cluster membership probabilities. We supplement the astrometric data with radial velocities collected from a dozen literature sources. We use Gaia DR1 Tycho- Gaia Astrometric Solution (TGAS) data complemented by Hipparcos-2 data for bright stars not contained in TGAS. We present a study of the membership of the Hyades open cluster, derive kinematically modelled parallaxes of its members, and study the colour–absolute magnitude diagram of the cluster.
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