Distribution of the physical properties of all the observed ATLASGAL clumps and compact sources identified at 350 μm with SABOCA. Top left: mass distribution of clumps and SABOCA compact sources. The vertical lines show mass limits of 40 M⊙ and 650 M⊙. Top right: distribution of sizes that are the measured FWHM size from the Gaussclumps source extraction. Vertical lines show the 0.1 and 0.5 pc range for the definition of cores and clumps. Bottom left: luminosity-to-mass ratio distribution of the clumps and SABOCA compact sources. The vertical dotted lines indicate luminosity-to-mass ratios of 1 and 10, which are taken as empirical evolutionary boundaries in Molinari et al. (2016) for massive clumps. Bottom right: temperature distribution with a vertical line showing 18 K, which is the average temperature for galactic background.
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