CO(3 − 2) images of the sample galaxies. Each image covers a region of 400 pc × 400 pc, as in Figure 1. The two ellipses in each panel correspond to circles with radii of 50 and 200 pc projected onto the plane of the galaxy. The galaxies are ordered by increasing 2 − 10 keV luminosity, from top-left to bottom-right. The contours correspond to (3, 5, 10, 20, 30, 50, 100, 200)×σ. The red ellipse inside the white square at the bottom-right corner of each panel represents the ALMA beam.