Fig. 9

Averaged molecular concentrations of CO, CN, and HCN as a function of radial distance for DARWIN models with input parameters M* = 1 M⊙, log L* ∕L⊙ = 3.85, T* = 2800 K, up = 4 km s−1, and log (C-O) + 12 = 8.8. The solid, dashed, and dotted lines show the molecular concentration from DARWIN models at solar, LMC, and SMC metallicities, respectively.
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