Rotation curve of disc stars (left panel) and of classical bulge stars (middle panel) of the N-body model with a disc and a classical spheroid (B/D = 10%) (disc+bulge simulation). Δ V_GC = V_GC (disc) – V_GC (classical bulge) between disc stars and classical bulge stars (right panel). Stars at |x| ≤ 2.5 kpc and |y| ≤ 3 kpc from the Galactic centre are selected. Different latitudes are shown for the modelled galaxy: b = 0°, − 2°, − 4°, − 6°, − 8°, and − 10°. The size of the fields is Δl = Δb = 1° for b ≥ − 6°. To obtain better number statistics for samples at latitudes b < −6°, Δ l = Δ b = 1. ° 5 have been adopted.