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Fig. 7

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Root-mean-square velocity of stars in the cluster core as a function of time for all the models with ρ˙0=0.142Myr1pc3$\dot{\rho}_0=0.142$~M$_\odot$~yr$^{-1}$~pc$^{-3}$. The rate for the increase in vrms,core correlates with the SF efficiency. We also note that after SF ceases at 0.5 Myr for model E6 (rapid SF), the rate at which vrms,core increases is lower.

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