Results of the simulation compared to the distribution of cluster members. Top and middle: (X, Y) and (l, b) distribution of the simulated escaping stars of the cluster. The colours correspond to the density of points, and the blue line indicates the orbit integrated backwards. In grey, we plot the stars which are still bounded to the cluster (energy < 0). Bottom: (l, b) distribution of the cluster members coloured by the probability of membership. The three ellipses correspond to the three Gaussian components obtained by our GMM fit in Sect. 2.2, corresponding to the core (blue), the tidal tail (green), and the halo (orange). The tidal tail ellipse is also plotted in the middle panel for comparison.