The Gaia-ESO Survey: Insights into the inner-disc evolution from open clusters

Vista sencilla de ítem
dc.contributor.authorMagrini, L.
dc.contributor.authorRandich, S.
dc.contributor.authorDonati, P.
dc.contributor.authorBragaglia, A.
dc.contributor.authorAdibekyan, V.
dc.contributor.authorRomano, D.
dc.contributor.authorSmiljanic, R.
dc.contributor.authorBlanco-Cuaresma, S.
dc.contributor.authorTautvaišiene, G.
dc.contributor.authorFriel, E.
dc.contributor.authorOverbeek, J.
dc.contributor.authorJacobson, H.
dc.contributor.authorCantat-Gaudin, T.
dc.contributor.authorVallenari, A.
dc.contributor.authorSordo, R.
dc.contributor.authorPancino, E.
dc.contributor.authorGeisler, D.
dc.contributor.authorSan Roman, I.
dc.contributor.authorVillanova, S.
dc.contributor.authorCasey, A.
dc.contributor.authorHourihane, A.
dc.contributor.authorWorley, C.C.
dc.contributor.authorFrancois, P.
dc.contributor.authorGilmore, G.
dc.contributor.authorBensby, T.
dc.contributor.authorFlaccomio, E.
dc.contributor.authorKorn, A.J.
dc.contributor.authorRecio-Blanco Carraro, G.
dc.contributor.authorCostado, M.T.
dc.contributor.authorFranciosini, E.
dc.contributor.authorHeiter, U.
dc.contributor.authorJofré, P.
dc.contributor.authorLardo, C.
dc.contributor.authorDe Laverny, P.
dc.contributor.authorMonaco, L.
dc.contributor.authorMorbidelli, L.
dc.contributor.authorSacco, G.
dc.contributor.authorSousa, S.G.
dc.contributor.authorZaggia, S.
dc.date.accessioned2023-04-05T15:16:24Z
dc.date.available2023-04-05T15:16:24Z
dc.date.issued2015-08
dc.descriptionIndexación: Scopuses
dc.description.abstractContext. The inner disc, which links the thin disc with the bulge, has been somewhat neglected in the past because of the intrinsic difficulties in its study, among which crowding and high extinction. Open clusters located in the inner disc are among thebest tracers of its chemistry at different ages and distances. Aims. We analyse the chemical patterns of four open clusters located within 7 kpc of the Galactic centre and of field stars to infer the properties of the inner disc with the Gaia-ESO survey idr2/3 data release. Methods. We derive the parameters of the newly observed cluster, Berkeley 81, finding an age of about 1 Gyr and a Galactocentric distance of ∼5.4 kpc. We construct the chemical patterns of clusters and we compare them with those of field stars in the solar neighbourhood and in the inner-disc samples. Results. Comparing the three populations we observe that inner-disc clusters and field stars are both, on average, enhanced in [O/Fe], [Mg/Fe], and [Si/Fe]. Using the idr2/3 results of M67, we estimate the non-local thermodynamic equilibrium (NLTE) effect on the abundances of Mg and Si in giant stars. After empirically correcting for NLTE effects, we note that NGC 6705 and Be 81 still have a high [α/Fe]. Conclusions. The location of the four open clusters and of the field population reveals that the evolution of the metallicity [Fe/H] and of [α/Fe] can be explained within the framework of a simple chemical evolution model: both [Fe/H] and [α/Fe] of Trumpler 20 and of NGC 4815 are in agreement with expectations from a simple chemical evolution model. On the other hand, NGC 6705, and to a lesser degree Berkeley 81, have higher [α/Fe] than expected for their ages, location in the disc, and metallicity. These differences might originate from local enrichment processes as explained in the inhomogeneous evolution framework. © ESO 2015.es
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2015/08/aa26305-15/aa26305-15.html
dc.identifier.citationAstronomy and Astrophysics Volume 5801 August 2015 Article number A85es
dc.identifier.doi10.1051/0004-6361/201526305
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/48228
dc.language.isoenes
dc.publisherEDP Scienceses
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectOpen Clusterses
dc.subjectMagellanic Cloudses
dc.subjectGaiaes
dc.titleThe Gaia-ESO Survey: Insights into the inner-disc evolution from open clusterses
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
aa26305-15.pdf
Tamaño:
4.39 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista