Fig. 9
Comparison between starless gas-clumps from low- via intermediate- to high-mass star formation. The 875 μm data for the prototypical low-mass core B68 are taken from Nielbock et al. (2012), and the N2H+(1–0) data for the intermediate-mass star-forming region IRDC 19175 are from Beuther & Henning (2009). Each panel presents a linear scale-bar of 50 000 AU and the synthesized beam, average densities are mentioned as well.
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