Channel maps of the stacked cube obtained by removing the higher resolution (< 0.6 arsec) observations (see Sect. 2) and tapering the remaining data to a common resolution of 1.2 arcsec. The displayed region corresponds to the central 6″ × 6″ in the velocity range v∈ [−1000, 1000] km s⁻¹ (in bins of 80 km s⁻¹, as indicated by the top labels). The bulk of the [CII] core emission is collapsed in the channel v ∈ [−390, 390] km s⁻¹. Contours correspond to [−3,−2, 2, 3, 4, 5, 6]σ, where σ is the rms sensitivity evaluated for each channel.