The cerium content of the Milky Way as revealed by <i>Gaia</i> DR3 GSP-Spec abundances

Context. The recent Gaia third data release contains a homogeneous analysis of millions high-quality Radial Velocity Spectrometer (RVS) stellar spectra by the GSP-Spec module. This led to estimation individual chemical abundances and allows us chemically map Milky Way. published include three heavy elements produced neutron-captures in interiors: Ce, Zr, Nd. Aims. We study Galactic content cerium based on these /RVS discuss evolution this element. Methods. used sample about 30 000 local thermal equilibrium Ce abundances, selected after applying different combinations flags. Based DR3 astrometric radial velocities, we explore Way and, particular, its halo disc components. Results. high quality is quantified through literature comparisons. found rather flat [Ce/Fe] versus [M/H] trend. also gradient derived from field stars independently, 50 open clusters. agrees with previous studies. vertical was estimated. report an increasing [Ce/Ca] [Ca/H] disc, illustrating late contribution asymptotic giant branch respect supernovae type II. Our including young massive population, are well reproduced new three-infall model. In M 4 globular cluster be enriched cerium. Moreover, 11 belonging Thamnos, Helmi Stream, Gaia-Sausage-Enceladus accreted systems were identified chemo-dynamical diagnostics. that Stream might slightly underabundant compared two other systems. Conclusions. work illustrates which significantly contribute unveiling heavy-element history