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Fig. 7

image

Temperature maps assuming fixed Xp - H2CO = 1.2 × 10-9 and n(H2). The maps in b) and c) are masked by signal-to-noise such that regions that have lower signal-to-noise are more gray. The thin black contours are at a column N(H2) = 5 × 1022 cm-2 from the Herschel SED fit maps. a)n(H2) = 104 cm-3, no mask; b) n(H2) = 104 cm-3; c) n(H2) = 105 cm-3.

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