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

Abstract

The recent Gaia Third Data Release contains a homogeneous analysis of millions of high-quality Radial Velocity Spectrometer (RVS) stellar spectra by the GSP-Spec module. This led to the estimation of millions of individual chemical abundances and allows us to chemically map the Milky Way. Among the published GSP-Spec abundances, three heavy-elements produced by neutron-captures in stellar interiors can be found: Ce, Zr and Nd. We use a sample of about 30,000 LTE Ce abundances, selected after applying different combinations of GSP-Spec flags. Thanks to the Gaia DR3 astrometric data and radial velocities, we explore the cerium content in the Milky Way and, in particular, in its halo and disc components. The high quality of the Ce GSP-Spec abundances is quantified thanks to literature comparisons. We found a rather flat [Ce/Fe] versus [M/H] trend. We also found a flat radial gradient in the disc derived from field stars and, independently, from about 50 open clusters, in agreement with previous studies. The [Ce/Fe] vertical gradient has also been estimated. We also report an increasing [Ce/Ca] vs [Ca/H] in the disc, illustrating the late contribution of AGB with respect to SN II. Our cerium abundances in the disc, including the young massive population, are well reproduced by a new three-infall chemical evolution model. Among the halo population, the M 4 globular cluster is found to be enriched in cerium. Moreover, eleven stars with cerium abundances belonging to the Thamnos, Helmi Stream and Gaia-Sausage-Enceladus accreted systems were identified from chemo-dynamical diagnostics. We found that the Helmi Stream could be slightly underabundant in cerium, compared to the two other systems. This work illustrates the high quality of the GSP-Spec chemical abundances, that significantly contributes to unveil the heavy elements evolution history of the Milky Way.

arXiv comment17 pages, 12 figures, accepted by A&A

References in corpus (73)

• Gaia Data Release 3: Summary of the content and survey properties
• Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
• The merger that led to the formation of the Milky Way's inner stellar halo and thick disk
• Co-formation of the Galactic disc and the stellar halo
• Neutron capture in low mass Asymptotic Giant Branch stars: cross sections and abundance signatures
• Elemental Abundance Survey of The Galactic Thick Disk
• Intrinsic iron spread and a new metallicity scale for Globular Clusters
• The Dawes Review 2: Nucleosynthesis and stellar yields of low and intermediate-mass single stars
• The GALAH+ Survey: Third Data Release
• Debris streams in the solar neighbourhood as relicts from the formation of the Milky Way
• Presupernova evolution and explosive nucleosynthesis of rotating massive stars in the metallicity range -3 <=[Fe/H]<= 0
• Neutron-Capture Elements in the Early Galaxy: Insights from a Large Sample of Metal-Poor Giants
• Painting a portrait of the Galactic disc with its stellar clusters
• Evolution, nucleosynthesis and yields of low mass AGB stars
• Evolution, nucleosynthesis and yields of low mass AGB stars at different metallicities (II): the FRUITY database
• Streams, substructures and the early history of the Milky Way
• Gaia Data Release 3 Properties and validation of the radial velocities
• Chemical evolution with rotating massive star yields: I. The solar neighbourhood and the s-process elements
• Gaia Data Release 3: Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy
• The s-Process in Low Metallicity Stars. II. Interpretation of High-Resolution Spectroscopic Observations with AGB models
• Multiple retrograde substructures in the Galactic halo: A shattered view of Galactic history
• Gaia Radial Velocity Spectrometer
• $s$-process production in rotating massive stars at solar and low metallicities
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program II: Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd and Eu
• Non-standard s process in low metallicity massive rotating stars
• The elemental composition of the Sun III. The heavy elements Cu to Th
• r-Process Nucleosynthesis in Hot Accretion Disk Flows from Black Hole - Neutron Star Mergers
• Europium production: neutron star mergers versus core-collapse supernovae
• Chemical abundances of the Milky Way thick disk and stellar halo II.: sodium, iron-peak and neutron-capture elements
• Improved Laboratory Transition Probabilities for Ce II, Application to the Cerium Abundances of the Sun and Five r-process Rich, Metal-Poor Stars, and Rare Earth Lab Data
• The origin and evolution of r- and s-process elements in the Milky Way stellar disk
• 3D kinematics and age distribution of the Open Cluster population
• The role of neutron star mergers in the chemical evolution of the Galactic halo
• Hunting for open clusters in Gaia EDR3: $628$ new open clusters found with OCfinder
• R-Process Nucleosynthesis in MHD Jet Explosions of Core-Collapse Supernovae
• The s-process in the Galactic halo: the fifth signature of spinstars in the early Universe?
• Halo Substructure in the SDSS-Gaia Catalogue : Streams and Clumps
• The SkyMapper-Gaia RVS view of the Gaia-Enceladus-Sausage -- an investigation of the metallicity and mass of the Milky Way's last major merger
• The GALAH survey: tracing the Galactic disk with Open Clusters
• The AMBRE Project: chemical evolution models for the Milky Way thick and thin discs
• The Branchings of the Main s-process: Their Sensitivity to alpha-induced Reactions on 13C and 22Ne and to the Uncertainties of the Nuclear Network
• Lead: Asymptotic Giant Branch production and Galactic Chemical Evolution
• Abundances of neutron-capture elements in stars of the galactic disk substructures
• Selecting accreted populations: metallicity, elemental abundances, and ages of the Gaia-Sausage-Enceladus and Sequoia populations
• APOGEE DR16: a multi-zone chemical evolution model for the Galactic disc based on MCMC methods
• Stellar parametrization from Gaia RVS spectra
• Explaining the Ba, Y, Sr, and Eu abundance scatter in metal-poor halo stars: constraints to the r-process
• s-Processing in the Galactic Disk. I. Super-Solar Abundances of Y, Zr, La, Ce in Young Open Clusters
• Elevated r-process enrichment in Gaia Sausage and Sequoia
• Comprehensive abundance analysis of red giants in the open clusters NGC 752, NGC 1817, NGC 2360 and NGC 2506
• Heavy element abundances in giant stars of the globular clusters M4 and M5
• Galactic Archaeology with asteroseismic ages. II. Confirmation of a delayed gas infall using Bayesian analysis based on MCMC methods
• Stellar migrations and metal flows -- Chemical evolution of the thin disc of a simulated Milky Way analogous galaxy
• $R$-process enhancements of Gaia-Enceladus in GALAH DR3
• How magnetic activity alters what we learn from stellar spectra
• Gaia Data Release 3: Chemical cartography of the Milky Way
• Large Metallicity Variations in the Galactic Interstellar Medium
• Abundance-age relations with red clump stars in open clusters
• The Gaia-ESO Survey: the origin and evolution of s-process elements
• The Similarity of Abundance Ratio Trends and Nucleosynthetic Patterns in the Milky Way Disk and Bulge
• Identifying Contributions to the Stellar Halo from Accreted, Kicked-Out, and In Situ Populations
• Beyond the two-infall model I. Indications for a recent gas infall with Gaia DR3 chemical abundances
• Abundances of disk and bulge giants from high-resolution optical spectra -- IV. Zr, La, Ce, Eu
• The chemical signature of the Galactic spiral arms revealed by Gaia DR3
• Abundances of neutron-capture elements in thin- and thick-disc stars in the solar neighbourhood
• On the neutron-capture elements across the Galactic thin disk using Cepheids
• Exploring the s-process history in the Galactic disk: Cerium abundances and gradients in Open Clusters from the OCCAM/APOGEE sample
• Modelling the chemical evolution of Zr, La, Ce and Eu in the Galactic discs and bulge
• R-process-rich stellar streams in the Milky Way
• Spiral-like features in the disc revealed by Gaia DR3 radial actions
• The AMBRE Project: Spectrum normalisation influence on Mg abundances in the metal-rich Galactic disc
• GSP-spec line list for the parametrisation of Gaia -RVS stellar spectra
• The heavy-elements heritage of the falling sky

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• StarHorse results for spectroscopic surveys + Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young-alpha rich stars
• Origin of neutron capture elements with the Gaia-ESO survey: the evolution of s- and r-process elements across the Milky Way
• Beyond the two-infall model I. Indications for a recent gas infall with Gaia DR3 chemical abundances
• 2D chemical evolution models II. Effects of multiple spiral arm patterns on O, Eu, Fe and Ba abundance gradients
• Time evolution of Ce as traced by APOGEE using giant stars observed with the Kepler, TESS and K2 missions
• Unveiling the chemical fingerprint of phosphorus-rich stars I. In the infrared region of APOGEE-2
• Constraints on the history of Galactic spiral arms revealed by Gaia GSP-Spec alpha-elements
• A catalogue of asteroseismically calibrated ages for APOGEE DR17. The predictions of a CatBoost machine learning model based on the [Mg/Ce] chemical clock and other stellar parameters
• Stellar s-process neutron capture cross section of Ce isotopes
• A comprehensive Gaia view of ellipsoidal and rotational red giant binaries
• Solar twins in Gaia DR3 GSP-Spec I. Building a large catalog of Solar twins with ages
• Searching for and characterizing halo substructures with the GALAH DR4 survey