Fig. 2

Comparison of density to radius of the W43 MDCs (massive dense cores) and HMPCs (high-mass protostellar cores) with the sources presented in Motte et al. (2007), Rathborne et al. (2007), Bontemps et al. (2010), Peretto et al. (2013), and Wang et al. (2014). The W43 MDCs and HMPCs lie above the general trend, and with respect to their sizes, they are the densest cloud structures.
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