Revisiting the statistical equilibrium of H− in stellar atmospheres

Open Access

Fig. 6

Effect on the equivalent widths of Fe II lines in the visual, roughly 400 to 800 nm, for a model with T_eff = 7000 K, log 𝑔 = 4.0, and [Fe/H] = 0. Each circle shows the ratio of the equivalent width for H⁻ treated in non-LTE (W_λ) to that in LTE $(W_{λ}^{LTE})$ $\left( {W_\lambda ^{{\rm{LTE}}}} \right)$ , i.e. $W_{λ} / W_{λ}^{LTE}$ ${W_\lambda }/W_\lambda ^{{\rm{LTE}}}$ . The circle diameter is proportional to the equivalent width.

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