Gaussian fits to the Hβ (top panel) and [O III] (middle panel) emission lines at the three epochs of X-shooter spectra analysed here. The arrows in the plot of Hβ indicate a possible stellar absorption component that we do not fit since the flux goes to negative values. The bottom panel shows [Ne III] and [He I] emission lines from the third epoch compared to Hβ/[O III] and the main (narrow) components fitted in Hβ indicated for comparison.