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We consider 28 particle-based simulations aimed at comparing thegravitational collapse of a spherically symmetric, uniform gas core in whichtwo extreme types of turbulent spectra of velocity have been initially induced,so that $\nabla \cdot \vec{v}=0 $ (14 simulations) and $\nabla \times \vec{v}=0$ (14 simulations). For all the simulations, the ratios of the kinetic energyand thermal energy to the gravitational energy were fixed at $\beta$=0.21 and$\alpha$=0.24, respectively. Most of the simulations finish by forming a singleprotostar, except for two simulations that form a binary system of protostars.In order to quantify the differences (or similarities) between the two types ofsimulations, we calculate some integral properties of the resulting protostars,such as the mass M$_f$ and the ratios $\alpha_f$ and $\beta_f$

The effects on a core collapse of changes in the number and size of turbulent modes of velocity