The Prince and the Pauper: Evidence for the early high-redshift formation of the Galactic $\alpha$-poor disc population

Matthew Raymond Gent, Philipp Eitner, Aldo Serenelli +5

Context. The presence of [$\alpha$/Fe]-[Fe/H] bi-modality in the Milky Way disc has animated the Galactic archaeology community since more than two decades. Aims. Our goal is to investi…