Mass accretion rate ﹩\dot{M}_{\mathrm{acc}\,}﹩ as function of the mass of the central object ﹩M_{*}﹩ in Taurus (left panel) and ρ Oph (right panel). Symbols are measured quantities or upper limits. Each line is a model series for fixed ω, as labeled, varying ﹩M_{\mathrm{core}\,}﹩. In all model series, ﹩\dot{M}_{\mathrm{infall}\,}﹩ and the snapshot time are kept constant (﹩10^{-5}\,M_{\odot }﹩ yr⁻¹ and 1 Myr in Taurus and ﹩3\times 10^{-5}\,M_{\odot }﹩ yr⁻¹ and 0.5 Myr in ρ Oph).