SFR as a function of Mach number. The left column is for log-normal PDF and the right column uses the Castaing-Hopkins PDF. TS stands for turbulent support (the present model), PN and mff PN models are discussed in Sect. 2.2. The employed value of b is 0.67, the value of η_d is 0.2, the injection scale L_i, is assumed to be 200 pc and the mean density n_c = 1.5 cm⁻³. The dotted line is the expected transition between the two regimes according to Eq. (55).