Gaia-ESO Survey: Global properties of clusters Trumpler 14 and 16 in the Carina nebula

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Fig. 16

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Optical extinction A_V vs. spectral index γ. Symbols as in Figs. 5 and 10. For GKM stars, γ is an effective gravity diagnostic, where high-gravity stars have γ< 0.97 and giants have γ> 1.02. The horizontal dashed line indicates the foreground extinction value.

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