Average number of stars 〈N_*〉_R located within a region of size R for different initial cloud density ρ₀ as predicted by our model of fragmentation. The solid, dashed, dot-dashed, and dotted curve represent our model for different mass transfer rates ξ = 0, −0.25, −0.5, −0.75, respectively. The triangles mark the points below which gas clumps do not fragment anymore. The crosses represent the number of YSOs in NESTs (Joncour et al. 2018) as a function of their size, as observed in the Taurus cloud.