Nuclear spectrum of NGC 5077 extracted from an integrated region of 1 × 1 arcsec² (solid black line). The region is centred at the position of the AGN as given by the peak of the Hα integrated emission. The best-fit model is shown in red. The two emission line components (green and orange) are shown in the middle of the panels, with a vertical offset for illustrative purposes. The residuals from the fit are shown in grey at the bottom of each panel. Top panel: wide wavelength range, while the two bottom panels show a zoom-in of the spectral region of the Hβ and [O III] emission lines (left) and the Hα, [N II], and [S II] emission lines (right). The emission lines are well represented by the presence of two kinematic components, one with a velocity dispersion of ∼210 km s⁻¹ and the other with ∼640 km s⁻¹.