Fig. 4
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Comparison of the REWs in 1D NLTE and 1D LTE for four selected Na i lines for a turn-off star (top) and a giant (bottom). The REWs are computed assuming [Na/Fe] = 0.0 and vmic = 1.0 km s−1. Black points show the REWs obtained in this work, while the red stars and blue squares denote results from Lind et al. (2011) and Lind et al. (2022), respectively, as indicated in the legend.
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