Comparison of CO and Hα data at the same resolution of FWHM 0 75. The top left panel is a comparison of the integrated, normalized CO (blue) and Hα (red) spectral profiles, with an instrumental resolution of FWHM 22 km s ⁻¹ (CO) and 100 km s ⁻¹ (Hα). The bumps at +940 and −670 km s ⁻¹ in the Hα spectrum are due to [N ii]. Top central and right panels: velocity dispersion and velocity (and ±1σ error) in a software slit of 1'' width, from Gaussian fitting along the major kinematic axis (position angle 36° west of north) in CO (blue) and Hα (red). Central and bottom rows: velocity channel maps (width ~65 km s ⁻¹) in Hα (contours) and CO (color), sampled onto a 0 06 pixel ⁻¹ grid.