Fig. 3
Maps of the H I (top-left), H2 (top-right), and total (bottom) gas columns. The labels are the same as in Fig. 1. The green contours represent the γ-ray emission, the contour levels are the counts per pixel of 0.5, 0.75, 1.0, 1.25, and 1.5 in the residual map above 10 GeV (Fig. 1). The color bars represent the gas column density in cm−2. For details, see the context in Sect. 3.
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