Published July 2017
| Version v1
Journal article
The Gaia -ESO Survey: radial distribution of abundances in the Galactic disc from open clusters and young-field stars
Creators
- Magrini, L.
- Randich, S.
- Kordopatis, G.
- Prantzos, N.
- Romano, D.
- Chieffi, A.
- Limongi, M.
- François, P.
- Pancino, E.
- Friel, E.
- Bragaglia, A.
- Tautvaišienė, G.
- Spina, L.
- Overbeek, J.
- Cantat-Gaudin, T.
- Donati, P.
- Vallenari, A.
- Sordo, R.
- Jiménez-Esteban, M.
- Tang, B.
- Drazdauskas, A.
- Sousa, S.
- Duffau, S.
- Jofre, P.
- Gilmore, G.
- Feltzing, S.
- Alfaro, E.
- Bensby, T.
- Flaccomio, E.
- Koposov, S.
- Lanzafame, A.
- Smiljanic, R.
- Bayo, A.
- Carraro, G.
- Casey, A.
- Costado, M.
- Damiani, F.
- Franciosini, E.
- Hourihane, A.
- Lardo, C.
- Lewis, J.
- Monaco, L.
- Morbidelli, L.
- Sacco, G.
- Sbordone, L.
- Worley, C.
- Zaggia, S.
Contributors
Others:
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Institut d'Astrophysique de Paris (IAP) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- INAF - Osservatorio Astronomico di Bologna (OABO) ; Istituto Nazionale di Astrofisica (INAF)
- Universidade de São Paulo = University of São Paulo (USP)
- Institut de Ciencies del Cosmos (ICCUB) ; Universitat de Barcelona (UB)
- Institut national de recherche et de sécurité (Vandoeuvre lès Nancy) (INRS ( Vandoeuvre lès Nancy))
- INAF - Osservatorio Astronomico di Padova (OAPD) ; Istituto Nazionale di Astrofisica (INAF)
- Institute of Astronomy [Cambridge] ; University of Cambridge [UK] (CAM)
- Lund Observatory ; Lund University [Lund]
- INAF - Osservatorio Astrofisico di Catania (OACT) ; Istituto Nazionale di Astrofisica (INAF)
- Focas Research Institute ; Dublin Institute of Technology
- Università degli studi di Torino = University of Turin (UNITO)
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN) ; Istituto Nazionale di Fisica Nucleare (INFN)
Description
Context. The spatial distribution of elemental abundances in the disc of our Galaxy gives insights both on its assembly process and subsequent evolution, and on the stellar nucleogenesis of the different elements. Gradients can be traced using several types of objects as, for instance, (young and old) stars, open clusters, HII regions, planetary nebulae.
Aims: We aim to trace the radial distributions of abundances of elements produced through different nucleosynthetic channels - the alpha-elements O, Mg, Si, Ca and Ti, and the iron-peak elements Fe, Cr, Ni and Sc - by use of the Gaia-ESO IDR4 results for open clusters and young-field stars.
Methods: From the UVES spectra of member stars, we have determined the average composition of clusters with ages > 0.1 Gyr. We derived statistical ages and distances of field stars. We traced the abundance gradients using the cluster and field populations and compared them with a chemo-dynamical Galactic evolutionary model.
Results: The adopted chemo-dynamical model, with the new generation of metallicity-dependent stellar yields for massive stars, is able to reproduce the observed spatial distributions of abundance ratios, in particular the abundance ratios of [O/Fe] and [Mg/Fe] in the inner disc (5 kpc
Aims: We aim to trace the radial distributions of abundances of elements produced through different nucleosynthetic channels - the alpha-elements O, Mg, Si, Ca and Ti, and the iron-peak elements Fe, Cr, Ni and Sc - by use of the Gaia-ESO IDR4 results for open clusters and young-field stars.
Methods: From the UVES spectra of member stars, we have determined the average composition of clusters with ages > 0.1 Gyr. We derived statistical ages and distances of field stars. We traced the abundance gradients using the cluster and field populations and compared them with a chemo-dynamical Galactic evolutionary model.
Results: The adopted chemo-dynamical model, with the new generation of metallicity-dependent stellar yields for massive stars, is able to reproduce the observed spatial distributions of abundance ratios, in particular the abundance ratios of [O/Fe] and [Mg/Fe] in the inner disc (5 kpc
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal-obspm.ccsd.cnrs.fr/obspm-02269950
- URN
- urn:oai:HAL:obspm-02269950v1
Origin repository
- Origin repository
- UNICA