Quantifying the informativity of emission lines to infer physical conditions in giant molecular clouds - I. Application to model predictions

Open Access

Fig. 4

Evolution of mutual information between the visual extinction $A_{V}^{tot}$ $\[A_{V}^{\text {tot }}\]$ and integrated line intensities as a function of S/N (left column) and integration time (right column), for $6 \leq A_{V}^{tot} \leq 12$ $\[6 \leq A_{V}^{\text {tot }} \leq 12\]$ (filamentary clouds). The top row shows the comparison between some chemical species, while the bottom row shows the comparison between the three lower energy transitions of HCO⁺.

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