Impact of the core-envelope mass scaling on the transition. The figure is analogous to Fig. 4, but for the simulations M1, M2, M3 (reference simulation), and M4. These 4 simulations are identical except for the power law exponent in the scaling of the initial envelope mass M_e,0 with core mass M_c, with p_e = 0, 1, 2 (reference simulation), and 3. In each case, the transition mass and radius were fit with a power law for M_bare and R_bare, as shown with the thick red line. The thinner gray line shows the transition mass and radius in the nominal simulation M0 to allow direct comparison.