"The ratio of [Eu/$\alpha$] differentiates accreted/in-situ Milky Way stars across metallicities, as indicated by both field stars and globular clusters"
Stephanie Monty, Vasily Belokurov, Jason L. Sanders, Terese T. Hansen, Charli M. Sakari, Madeline McKenzie, GyuChul Myeong, Ellot Y. Davies, Anke Ardern-Arentsen, Davide Massari