Hyades and their tidal tails. The figures show the spatial distributions of stars in dense regions with at least 2.5 × 10⁻³ stars per pc³ (see text for a further explanation of this selection). From left to right panels: distribution in the Y, X-, Y, Z-, and X, Z-planes. Stars selected in Gaia DR2 are shown as dots. In red we plot the Hyades cluster proper, in green the leading tail, in blue the trailing tail, and in pink all other stars in dense regions. The location of the predicted Hyades tidal tails from the model by Kharchenko et al. (2009) are indicated in yellow in the background.