Position-velocity diagram of the CO(3-2) line in NGC 1672, with a linear color scale (TM1 only). Superposed in red are the contours of the model without any black hole and torus inclination of 66° (left panel), with a black hole as derived from the M_BH-σ relation (Table 6) of 2.5 × 10⁷ M_⊙ with i = 66° (middle panel), and the best fit: a black hole of 5.0 × 10⁷ M_⊙, with i = 66° (right panel). The mass model is that based on the galfit decomposition, and the predicted circular velocity is reproduced in blue lines (Fig. 9).