Residual tangential velocity |v_tang| with respect to the Hyades group motion as a function of the distance to the cluster centre, for classical members (blue points and error bars) and new candidates with an age lower (black points and error bars) and higher (red points and error bars) than the Hyades age. Also shown are the two candidates in binaries (Nos. 12 and 13, cyan points in the figure) for which we have no spectroscopic parameters. Instead we rely on the kinematic values, providing lower limits on the residual velocities. The error bars are not rms errors but refer to the minimum and maximum values where the distance of a given white dwarf is varying within d_spectro ± 1σ. The horizontal dotted line represents the 8 km s^-1 residual velocity upper limit for the candidate selection.