Intensity plot of the combination of the 9 lines around the galaxy and blob. In the top panel, the black line is the same as the red line of Fig. 4) and the peak corresponding to the blob is fitted with a single Gaussian function. In the bottom panel, such Gaussian is removed from the profile and a different Gaussian function is fitted to the remaining signal, corresponding to the flux of the host galaxy. The vertical dashed lines are the same as in Fig. 4 and represent the peaks of the emission of the galaxy and the blob.