Density distribution in the template clusters. The dashed black curve indicates the distribution of the high-mass cluster, while the solid coloured curves represent time steps in the intermediate-mass model, 100 Myr apart, with the average time of each step shown in the legend. The central mass density (left end of the plot) decreases monotonically with age of the model. The horizontal dash-dotted line indicates the Galactic mid-plane density for comparison.
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