From top to bottom: 1.3 mm continuum image, the CO(2-1) integrated intensity contours overlaid on the V − H color map, the CO(2-1) observed mean velocity field, the ^3DBAROLO velocity model, the residual velocity map (observed-model), and the CO(2-1) observed velocity dispersion map. Green dashed ellipses depicted in panel b are examples of x₁ and x₂ orbits induced by the main stellar bar assuming the parameters obtained by Alonso-Herrero et al. (1998) and a bar width equal to that of the nuclear region (21). Integrated spectra extracted for this galaxy are shown in Fig. 11. The rest is as in Fig. 2. Continuum contours are −3σ (white dashed line) and 3σ to 33σ, in steps of 3σ (white solid line), with σ = 28 μJy beam⁻¹. Velocity contours (b and c panels) are from 3770 to 3950 km s⁻¹ in steps of 20 km s⁻¹. The residual velocity contours are from −40 to 40 km s⁻¹ in steps of 10 km s⁻¹. The velocity dispersion contours are in steps of 10 km s⁻¹, starting at 10 km s⁻¹.