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Fig. 2.

image

Distribution of γLow − zZ (left panel) and qPAH_Low − zZ (right panel) dust parameters from Draine & Li’s models for the Low-zZ galaxy sample. The γLow − zZ distribution peaks at 0.75 ± 0.07 and most of the qPAH = 0.47, which is the lowest value in Draine & Li’s models. γLow − zZ is assumed to be valid for the Hi-z LBG sample, and qPAH_Low − zZ is fully consistent with our assumed qPAH_Hi−z.

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