Comparison of models and data selection done by Röser et al. (2019). Top panel: proper motion distribution in mas/yr plotted for the M1 model as black background points. In red we show targets identified as members of the Hyades and its tail by Röser et al. (2019) in common with our S1-selected sample, and yellow points represent a selected subset of these that creates a clump in proper motion distribution that is offset from the model prediction. Bottom panel: spatial distribution of the same targets as in the top panel, shown in Galactic Cartesian coordinates with its central sun plotted as a yellow point with a black line. The selected clump in proper motion (yellow points) is scattered over the tidal tails and partially overlaps it. The points are selected based on their position in measured proper motion without the need to introduce any model.
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