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Fig. 5


Time evolution of the protostellar system: total mass of all the sink particles and the most massive sink particle are plotted as a function of time (top left). Total mass accretion rate by all sink particles are shown as a function of time (for others rotation parameter β0; same as Fig. 3A). The cloud with zero rotation attains 30 M within a few hundred years after the formation of the first sink particle. The rotationally supported cloud takes ~1001000 yr, depending on the initial strength of rotation (β0). The mass accretion rate decreases with time until further sink particles form.

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