Fig. 11.
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Strontium abundance in the target stars plotted vs. effective temperature. Top: Stars are marked in different colors according to their sodium abundances. Bottom: Blue circles show 1P stars ([Na/Fe] = [[Na/Fe]min, [Na/Fe]min + 0.3]), and red circles show 2P stars (those with higher Na abundances). The minimum sodium value, [Na/Fe]min = 0.05, was taken from Kolomiecas et al. (2022).
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