Overview of the final reduced ALMA data, showing one object per row. Left: CO(2−1) moment M₀, corresponding to the integrated flux. Center: ALMA millimeter continuum flux density near the CO spectral region, with M₀ outline here with a bluish-green contour. Right: CO(2−1) spectral profile, integrated over the whole FoV (only spaxels not masked on the M₀ map), showing the flux density vs. rest velocity (or observed frequency, in the top). The coordinates are relative to the galactic nucleus (black cross marks), assumed to be located at the ALMA millimeter continuum peak (see Table 1). The gray ellipses represent the ALMA beam resolution of the observation.