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20242026
most citedCepheid Metallicity in the Leavitt Law (C- MetaLL) survey: VIII: Spectroscopic detection of rare earth dysprosium, erbium, lutetium and thorium in Classical Cepheids

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astro-ph.SR2025

The elderly among the oldest: new evidence for extremely metal-poor RR Lyrae stars

Valentina D'Orazi, Vittorio F. Braga, Giuseppe Bono +21

We performed a detailed spectroscopic analysis of three extremely metal-poor RR Lyrae stars, exploring uncharted territories at these low metallicities for this class of stars. Usi…