Fig. 7
Flux ratios between NLTE and LTE line profiles, for the hydrogen lines considered and for the different models. Wavelength difference Δλ measured from the line core. Results for the PHOENIX NLTE model atmosphere (not shown) are indistinguishable from the corresponding LTE model in this figure. For Hα and Hβ the ratio for the line core is not shown, to emphasise the NLTE effects in the wings, formed in the photosphere.
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