Cosmic rays, gas, and dust in the central molecular zone - I. XCO factors, cosmic-ray densities, and dust opacities

Open Access

Fig. 14

Dust opacity as a function of the cold to warm component ratio in dust optical depth, $τ_{353}^{cold} / τ_{353}^{warm}$ $\tau _{353}^{{\rm{cold}}}/\tau _{353}^{{\rm{warm}}}\$ . The green line corresponds to the mean opacity in the regions dominated by the disk gas (f_disk > 0.5) which mostly correspond to regions dominated by atomic gas.

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