Top, left: deprojected orbit pattern in the inner 3.0 kpc of the bar model. Top, right: resonance diagram. The rotation frequency Ω (red), (blue), (cyan) and the bar pattern speed (yellow dashed). The iILR at 160 pc, oILR at 1150 pc and CR at 4000 pc (outside the displayed range) are indicated with black dots. Overlayed is the rotation curve, which approaches 200 km s^-1. The vertical dashed line indicates the outer edge of the models radial mass distribution. Bottom, left: integrated emission of the bar model with contours of CO(1−0) intensity map overlaid. The model emission has been computed at the CO(1−0) resolution. Contours run from 5σ in steps of 20σ (1σ = 0.025 Jy beam^-1 km s^-1). The red cross indicates the position of the center. Bottom, right: velocity field of the bar potential model with contours of the CO(1−0) velocity field. Contours run from –200 to 200 km s^-1 in 25 km s^-1 steps.