Fig. 1.
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Face-on stellar mass surface density of M33 computed from the map of Corbelli et al. (2014) and averaged in radial bins for R < 5 kpc is shown as a function of galactocentric distance with cyan circles. Beyond 5 kpc an extrapolation of the radial profile is shown. The orange filled circles indicate the average stellar mass density inferred from the model of Querejeta et al. (2015).
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