Angular velocity of the Cepheids, using Ω(R) = L_Z(R = R_g)/R² = 231.4/R (solid black curve), with the angular velocity of the individual Cepheids as yellow points. The overplotted red curve is the angular velocity that would result when the Cepheid rotation curve from GD22 is used. Dashed curves are Ω + κ/2 (long dash) and Ω + κ (short dash). The rightmost vertical line is at R = 12.75 kpc, the position of the new resonance-like feature, and the horizontal turquoise line is the resulting estimated pattern speed of the bar, assuming this feature to be the 1:1 bar resonance. The other vertical lines mark the resulting positions for corotation and the OLR.