Fig. 16

Maps of the kinetic temperature (Tkin, top), beam-averaged methyl cyanide column density (Nbeam, contours), beam dilution factor (fbeam, middle), and H2 number density (nH2, bottom) across the Orion KL region, determined by simultaneously fitting LVG models to the observed J = 12K − 11K, J = 13K − 12K, and J = 14K − 13K lines at each position. Column density contours are plotted at 0.5 × 1015 cm-2 intervals, starting at 1.0 × 1015 cm-2 (black). The locations of the hot core, compact ridge, continuum sources, and hot zone are indicated as in previous figures.
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