Left panel: solid lines show NLTE corrections for the S I line at 9228 Å as a function of Teff for different log g, assuming [ Fe / H ] = −1.5 and [ S / Fe ] = 0. For log g = 1.5 the corrections for 9212 Å are shown with a dashed line and with a dotted line for 9238 Å. Right panel: NLTE corrections for the sulphur line at 9228 Å as a function of [Fe/H] for different [S/Fe], assuming Teff = 4500 K and log g = 0.5.
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