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Fig. 14.

image

CNO-two-colour diagram (D’Antona et al. 2016; Milone et al. 2015: grey points). Larger filled circles are stars with our spectroscopic abundance determination, colour-coded according to the groups in Carretta (2015). Large black letters indicate the five photometric groups. Brown and cyan filled triangles are Li-rich and Li-poor stars from D’Orazi et al. (2015).

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