Abundances of Y, Ba, La, and Eu vs. [Fe/H] for the sample stars (black dots) and bulge stars (red squares). The abundances of the bulge population were derived by Bensby et al. (2010, 2011, 2013, microlensed dwarf stars) and by Johnson et al. (2012, RGB stars). The grey and green crosses indicate thin- and thick-disk stars.
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