Angular velocity of the RGB (solid black curve) and OB stars (solid blue curve). The dashed vertical lines mark the estimated position of corotation (5.4 kpc) and the OLR (9.7 kpc), as estimated in GD22, and the new resonance-like feature at 12.75 kpc. The thin horizontal dashed line indicates the pattern speed inferred from the corotation radius. We note that the radius of the new resonance-like feature is quite close to the radius where (Ω + κ) is equal to the pattern speed of the bar, that is, approximately at the expected radius of the 1:1 resonance of the bar.