Fig. 4
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Comparison of the star formation–gas density relation between the different simulations, shown at four different times (t = 2.1, 2.7, 3.0, and 3.5 Myr), which illustrates the evolution of the cloud. In HIIR the giant H II region develops after 2.2 Myr, while for HIIR+PSJ it starts to restructure the environment at later times (> 2.75 Myr). The colour code is the same as in Fig. 2.
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