Left panel: fit to the escape velocity points assuming v_e,340, and obtained using the disc and bulge potential of model III of Irrgang et al. (2013), and a dark halo of M₂₀₀ = 1.28 × 10¹²M_⊙ and c₂₀₀ = 11.09 (orange line and uncertainty bands). Right panel: same as in the left panel, but for M₂₀₀ = 1.55 × 10¹²M_⊙ and c₂₀₀ = 7.93 (blue line and uncertainty bands) when the ΛCDM relation between M₂₀₀ and c₂₀₀ is assumed. The orange and blue bands represent the 1σ uncertainties of the models.