Ongoing

Rob Yates, Nicole Buckley, Payel Das

The chemical plane defined by the [Al/Fe] and [Mg/Mn] element ratios has recently been proposed as a useful tool for distinguishing the major stellar components of the Milky Way, namely the thin disc, thick disc, and stellar halo. However, recent work using one-zone chemical evolution models and prescribed star-formation histories (SFHs) suggests that the positions of observed stars on this plane cannot be easily reproduced and that the dominant cause of this is uncertainties in the chemical yields for these elements. Therefore, in this work we investigate the [Al/Fe] – [Mg/Mn] relation anew using L-Galaxies, which now contains a full complement of chemical elements, an extended range of chemical enrichment channels, and offers a statistically-significant sample of Milky Way Analogue (MWA) galaxies with a range of realistic SFHs. We will then conpare these simulated galaxies to the latest observational data from APOGEE and GALAH.