Fig. 9
Integrated flux densities of 12CO and 13CO in the S-F ring region of the Circinus galaxy. The shadowed regions are the ranges of the fittings satisfying likelihood L> 0.8, derived from the two-component LVG modeling. The high- and low-excitation components and the total integrated 12CO flux densities are plotted in red, blue, and green. The total 13CO flux densities are plotted in gray.
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