Fig. 7.
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Velocity dispersion profiles of the stellar disk in NGC 551. The orange triangles represent the σ⋆, as obtained by analytical calculation from Leroy et al. (2008). The blue circles show the intrinsic σ⋆ profile, as obtained by the iterative method. The green squares show the σ⋆ profile obtained with the DMS formalism (Bershady et al. 2010a). The analytical expression can significantly overestimate σ⋆ at all radii.
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