Fig. 7
Extinction (top) and star density (bottom) along the Trifid line-of-sight. The black line is the average value for the region where AV > 20 mag in Fig. 6; the gray line is for the region where AV ∈ [0,1] mag. The dashed lines indicate the Trifid location at a distance of 2.7 ± 0.5 kpc.
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