NGC 3627 (SB) non-weighted deprojected torque map (left panel), torque profile (upper central panel), comparison with values from the literature (lower central panel), rotation curve (upper right panel), and angular rotation curve (lower right panel). We show contours corresponding to [5σ, 15σ, 45σ, …, 0.9σ_max] in the CO map, where σ is the mean value of the gas map σ = 1.21 K km s⁻¹ and σ_max = 1394.02 K km s⁻¹. Symbols as in Fig. 3. The CR is automatically selected as R_CR = 5.2 kpc, due to the change of torques signs at this position and the amplitude of the crossing. R = 3.5 kpc is not selected as the CR because the torque profile does not change sign at this position. R = 6.3 kpc is not selected as the CR because, even though the torque profile changes sign, it oscillates around zero (a behavior usually associated with the presence of a spiral) and presents a lower amplitude (compared to R_CR = 5.2 kpc ).