Fig. 5
Non-LTE abundance corrections as functions of equivalent width for selected Na I lines for a metal-poor turn-off star (top: Teff = 6400 K, log g = 4.0, [Fe/H] = −2, and ξt = 2.0 km s-1) and metal-poor giant (bottom: Teff = 5000 K, log g = 2.0, [Fe/H] = −2, and ξt = 2.0 km s-1). The black bullets indicate the predicted line strength and abundance corrections at [Na/Fe] = 0.
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