Cepheids within 1 kpc of the Galactic Center have near-solar iron abundances, supporting a metallicity peak at 2-4 kpc and a decline inward.
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Elemental abundances in the center of the Galactic Nuclear Disc
Cepheids within 1 kpc of the Galactic Center have near-solar iron abundances, supporting a metallicity peak at 2-4 kpc and a decline inward.