Time evolution of the three semiaxes of the cluster determined with sink particles in the left column. The dashed curves and solid curves represent the values calculated with all sinks and the reduced values with distant sinks omitted, respectively. The sink mass (dashed) and total mass (solid) inside cluster region defined with sink distributions are plotted against time in the right column. The dotted line represents the sink mass before sink removal. Removing the sink particles far away from the center drastically reduces the size while only mildly decreasing the total mass. From top to bottom are runs A, B, C, and D with increasing levels of turbulence.