Fig. 8.
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Optical depth of the dust versus hydrogen column density of the gas. Sy1s are shown in orange and Sy2s are shown in blue. Symbols refer to the best baseline model per object. The dotted, solid, and dashed black lines show 10, 1, and 0.1 times the Galactic dust-to-gas ratio, respectively. Objects with upper/lower limits are shown with smaller symbols for clarity.
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