In solid curves for the gaseous protocluster and in dashed curves for the parent cloud, the PDF at several time steps for run B with tff/tvct = 0.9. The total mass of the protocluster is indicated in the legend. The normalization is performed such that the integral is equal to one. The distribution is close to lognormal at the beginning as a result of turbulence interaction. The gravity soon dominates and creates a prominent power-law tail. The slope −2.2 is the average of the cluster PDF slopes evaluated at the same density range as the black line except for the first time step.
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