Results of the BV model of the stellar tangential velocity map of the B5 (left panels) and KRATOS (right panels) simulations: amplitude (upper panels), phase angle, ϕ_2,kin of the Fourier modes (middle panels), and angular frequency Ω (bottom panels). In the top panels, the black solid line is the fitted axisymmetric velocity component V₀ (the rotation curve), the grey line is the median velocity (initial value for the model), the blue dashed curve is the amplitude of the tangential bisymmetry V₂, and the orange dotted line is the scatter of the model V_s. In the middle and bottom panels, the vertical light coral area and dashed line shows the adopted bar corotation radius, R_c = 8.0 ± 0.5 kpc for B5 and R_c = 3.3 ± 0.5 kpc for KRATOS simulations. In the bottom panel, the black solid line is the angular velocity derived from V₀, while the horizontal green area and dotted line shows the corresponding bar pattern speed km s⁻¹ kpc⁻¹ and km s⁻¹ kpc⁻¹, for the B5 and KRATOS simulations, respectively. Values are summarised, and compared with the reference values, in Table 1.