Fig. 2
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The [Eu/Fe] ratio as a function of [Fe/H]. The stars shown as circles are non-CEMP metal-poor stars from the JINA database (Abohalima & Frebel 2018). Open circles are ordinary stars, while brown ones are RPEs. R-I, r-II, and r-III levels are shown by the red lines. BPS CS 29529-0089 and TYC 9219-2422-1 are shown as colored star symbols.
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