Ionised gas moment maps. Left columns: Intensity map in grey-scale from faint (grey) to bright (black) of the Hα, [NII] and [OIII] lines (from top to bottom). The contour levels for the intensity map are given in the colour bar at the top. The red contours refer to the radio continuum (levels: 0.08, 0.31, 0.80, 1.68 mJy beam⁻¹). Central columns: Peak-velocity field with respect to the systemic velocity (1456.4 km s⁻¹). The dashed contours refer to the approaching side, while the solid lines correspond to receding velocities. The radio continuum is overlaid with orange contours. Right panels: Velocity dispersion map of the aforementioned lines. The contour levels are given in the colour bar. The black contours refer to the radio continuum. In all the top panels the 1 kpc reference scale is shown at the top left.