Comparison between the kinematical data and the predictions of spherical Jeans models with a constant mass-to-light ratio Υ and different masses M_BH for a central black hole. The left panel shows the distribution of likelihoods in the Υ-M_BH plane. Solid lines give 1, 2, and 3σ confidence intervals. The marginalised distributions of both Υ and M_BH are shown in the central panel. The dotted lines indicate the 1 and 3σ confidence intervals. The right panel compares the velocity dispersion predicted by models with a mass-to-light ratio of Υ = 1.9 M_⊙/L_⊙ and different black hole masses to the kinematical data.