HCN emission from translucent gas and UV-illuminated cloud edges revealed by wide-field IRAM 30 m maps of the Orion B GMC - Revisiting its role as a tracer of the dense gas reservoir for star formation

Open Access

Fig. 7

Spatial distribution of T_ex(HCN J = 1−0) and N(HCN) estimated from LTE-HFS fits, and maps of HCN J = 1−0 HFS intensity ratios. (a) T_ex(HCN J = 1−0). (b) Opacity-corrected column densities N(HCN). (c) and (d) R₀₂ and R₁₂ (white color corresponds to non-anomalous ratios).

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