Fig. 2
H2 1−0 S(1) emission over the star-cluster mass, for SSCs with different ages and PCC 1 (Herrera et al. 2011), observed in the SINFONI fields. Since both the masses and H2 1−0 S(1) fluxes depend on the extinction in the same way, the H2-to-stellar mass ratio is independent of extinction. PCC 1 has a lower limit since it has not yet formed massive stars. The H2-to-stellar mass ratio is normalized to the value for B1.
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