Fig. 9.
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Cumulative line intensity (top panel) and line emissivity (bottom panel) at each depth in the cloud, for the CLOUDY model that best fits the W2246–0526 observations. Both panels show each modeled FIR fine-structure line as a function of the cloud depth, measured in hydrogen column density. The HII fraction is included to visualize the ionization front, where it drops sharply.
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