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

Open Access

Fig. 6.

From left to right, the ground-state isotopologue ¹²CO/¹³CO ratio as a function CO luminosity and the HCN/CO, FIR/CO, and HCN/HCO⁺ ratios as a function of the ¹²CO/¹³CO ratio. Fit parameters are listed in Table 8.

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