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Fig. 2


Selected Y, Ba, La, and Eu lines. The abundance of each star, Ai, is the average of abundances derived from individual lines, Aλi. Therefore, Aλi − ⟨Ai indicates the differences between the mean abundance value and those derived from individual lines. The mean deviation for each line is represented by black circles. Dashed lines indicate ± 0.1 dex.

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