Luminosity-mass diagram of SABOCA compact sources. The quiescent and star-forming cores are indicated with blue and red in 2−4 kpc (hollow markers) and 1−2 kpc (filled markers) distance bins. The empirical evolutionary tracks for massive clumps with envelope masses of 80, 140, 350, 700, and 2000 M⊙ in Molinari et al. (2008) are shown with gray dots. André et al. (2008) tracks for final stellar masses of 1, 3, 8, 15, and 50 M⊙ are shown as magenta dashed lines. Red and blue lines indicate the fitted linear regression for the quiescent and star-forming cores at 2−4 kpc.
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