Relation between virial parameter and mass for the clumps in G304.74. The solid line is the least squares fit to the data, i.e., log (αvir) ≃ 1.4 − 0.7log (M). The dashed line indicates the virial-equilibrium limit of αvir = 1, and the dash-dotted line shows the limit of gravitational boundedness or αvir = 2.
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