Comparison with Kafle et al. (2018). Top panel: Distributions of PNe radial velocities (blue histogram) from Kafle et al. (2018) compared to predictions from model 371 (black histogram). The two red-dashed vertical lines show the limits chosen by Kafle et al. (2018) to calculate M31’s escape velocity from PNe with absolute velocity values in excess of 300 km s⁻¹. Bottom panel: Cumulative mass M₂₀₀ for Model 371 (red points) fit by the function of Dehnen (1993) (red line, see Eq. (1)) compared to that from Kafle et al. (2018, gree-dashed line). Vertical dotted lines indicate the corresponding R₂₀₀ radii: 137 and 240 kpc, respectively.