[Ba/Mg] vs. [Mg/H]. UMi stars (black circles) are from Shetrone et al. (2001), Sadakane et al. (2004), Cohen & Huang (2010), Kirby & Cohen (2012), Ural et al. (2015), and Sestito et al. (2023c). Fnx stars (black squares) are from Letarte et al. (2010). MW halo stars (grey circles) are from the SAGA database. The green shaded area delimits the region where [Ba/Mg] is purely produced by core-collapse SNe II (CCSNe), according to low-metallicity CCSNe yields from (Ebinger et al. 2020). The pink shaded area indicates the region where [Ba/Mg] is produced by AGBs only, according to the theoretical yields from the F.R.U.I.T.Y. database (Straniero et al. 2006; Cristallo et al. 2007, 2009).