Star formation in molecular cores - III. The effect of the turbulent power spectrum

摘要: We investigate the effect of turbulent power spectrum ( $P(k) \propto k^{-n}$, with $n = 3,\,4\;{\rm or}\;5$) on fragmentation low-mass cores, by means SPH simulations. adopt initial density profiles and low levels turbulence based observation, for each n-value we conduct an ensemble simulations different seeds velocity field, so as to obtain reasonable statistics. find that when is concentrated at larger scales (i.e. n), more protostellar objects form there a higher proportion stars brown dwarfs. This in direct contrast recent results Delgado Donate et al., presumably because they adopted much turbulence.