Fig. 16

(a) Dust optical depth τ353 map from Planck data (Planck Collaboration XI 2014) in the range of τ353 = 2.0 × 10−5 to 6.4 × 10−5 (80- 98 percentile range). Overlayed are contours of the H I L-component (light blue) and I-component (green). The contour levels correspond to 870 and 930 K km s−1 for the L- and I-component, respectively. (b) Soft XMM-Newton three-color mosaic with 0.4–0.7 keV (red), 0.7–1.0 keV (green), 1.0–1.25 keV (blue) and τ353 dust optical depth contours (orange) calculated with the same scale as in (a).
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