Carbon and nitrogen as indicators of stellar evolution and age - A homogeneous sample of 44 open clusters from the Gaia-ESO Survey

Open Access

Fig. 5.

[N/Fe] abundance ratios in 1DUP RGB stars below the luminosity bump (the red symbols) and in the red clump stars (the yellow symbols) as a function of turn-off mass in the same cluster, showing larger nitrogen abundances in the red clump stars.

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