Fig. 1.
IMF slope (Γb) versus stellar velocity dispersion (σ⋆, upper panel) and total metallicity ([Z/H], bottom panel). Blue circles indicate data points for NGC 3311, colored according to the galactocentric distance. For other works, solid lines refer to local variations within galaxies (with a symbol indicating the center of the objects) and dashed lines refer to global variation across galaxies.
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