Fig. 3

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Comparison of [Eu/Ba] and [Sr/Ba] vs. [Ba/Fe] in the intermediate metal-poor stars studied in this paper and in the EMP stars (green dots) from the literature. The black symbols represent the normal stars and the red symbols the N-rich stars; these symbols are open if [Fe/H] > −1.5 and full if −2.3 < [Fe/H] < −1.5. The EMP stars (here with [Fe/H] < −2.5) are represented by green symbols. The plus signs (+) represents the mean value of the abundance ratios in the subgiant and turn-off stars of the globular cluster 47 Tuc ([Fe/H] = −0.7) and the crosses (×) in the giants of NGC 6266 ([Fe/H] = −1.2).
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