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Fig. 11

image

Upper panel: available kinematic data together with isotropic models. The circles are measurements by Milone et al. (2007), the triangles by Bertin et al. (1994). The central velocity dispersion of 264 km s-1 by Beuing et al. (2002) is not shown. Error bars are omitted for readability. Plotted are galactocentric distances, irrespective of minor or major axis or intrinsic deviations from central symmetry. The short-dashed line is an isotropic model without dark matter with the stellar M/LR-value indicated, the solid line is an isotropic MOND model. Lower panel: anisotropic models (see text). The solid line is a MONDian model. The long-dashed line is the sum of a stellar contribution with M/LR = 4.0 plus a logarithmic dark halo. The anisotropy cannot be very strong in which case a MONDian halo might be a good description.

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