Planck 2013 results
Free Access

Fig. 17


All-sky maps of σe 353 (upper) and LH (lower). The gas column density NH is NH i + 2 XCOWCO where NH i is from the LAB data, WCO is from the Planck12CO J = 1 → 0 map (type 3), and XCO = 2 × 1020 H2 cm-2 K-1 km-1 s.

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