Fig. 3
[Mg/Fe] vs. [Fe/H] plane as a function of various age ranges, going from oldest to younger stellar populations. Stars are color coded by their perigalacticons Rp. The blue and red lines are the same as in Fig. 1, where the high-[Mg/Fe] population are denoted by star symbols and the low-[Mg/Fe] population are denoted by circles.
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