Central molecular zones in galaxies: Multitransition survey of dense gas tracers HCN, HNC, and HCO+

Open Access

Fig. 11.

Left: the HNC(3−2)/HNC(1−0) excitation ratio as a function of the HCN(1−0) luminosity. The ground-state HCN/HNC ratio as a of the HCN(3−2)/HCN(1−0) excitation ratio. Solid lines mark ratios of unit. Symbols are as in Fig. 3; most data are from this paper. Fit parameters are listed in Table 8.

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