Mass Function of NESTs (dashed histogram). The graphic shows the mass probability density function (ΦN = dN/dlogm) as a function of logm, where N is the total number of the NESTs and m the mass of the NESTs. For comparison, we report also the mass functions of the H13CO+ cores (Onishi et al. 2002, light purple) and the near-infrared extinction dust cores (Schmalzl et al. 2010, light green). The red curve and black dashed curve indicate respectively the power law dN/dlogm ∝ m−Γ fit for the high mass NESTs distribution (red points) and normal fits to the whole observed mass distribution expressed in logarithm of the mass.
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