Fig. 13
Comparison between our new AGB Na abundances (labelled C17), the C13 abundances, and those of L16. All abundance sets are corrected for NLTE effects except C17LTE, which is included to highlight the magnitude of the corrections. The shaded region denotes typical uncertainties of 0.1 dex, added in quadrature (σ = 0.14 dex in total). The two coolest stars are discussed in the text.
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