Fig. 3
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Comparison of τ(250 μm) optical depth map derived from Herschel observations at 41′′ resolution (frame a) and NICER extinction map of Meingast et al. (2016) at 1’ resolution (frame b). The white and grey contours show, respectively, the outlines of the filament (Q=1) and the ridge (Q=2) regions. The black contours separate other high column density areas that are excluded from the analysis (Q>2).
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