Disc dichotomy signature in the vertical distribution of [Mg/Fe] and the delayed gas infall scenario

E. Spitoni, V. Aguirre Børsen-Koch, K. Verma +1

The analysis of the APOGEE data suggests the existence of a clear distinction between two sequences of disc stars in the [$\alpha$/Fe] vs. [Fe/H] abundance ratio space. We aim to test i…