The Gaia-ESO Survey: revisiting the Li-rich giant problem

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dc.contributor.authorCasey, A. R.
dc.contributor.authorRuchti, G.
dc.contributor.authorMasseron, T.
dc.contributor.authorRandich, S.
dc.contributor.authorGilmore, G.
dc.contributor.authorLind, K.
dc.contributor.authorKennedy, G. M.
dc.contributor.authorKoposov, S. E.
dc.contributor.authorHourihane, A.
dc.contributor.authorFranciosini, E.
dc.contributor.authorLewis, J. R.
dc.contributor.authorMagrini, L.
dc.contributor.authorMorbidelli, L.
dc.contributor.authorSacco, G. G.
dc.contributor.authorWorley, C. C.
dc.contributor.authorFeltzing, S.
dc.contributor.authorJeffries, R. D.
dc.contributor.authorVallenari, A.
dc.contributor.authorBensby, T.
dc.contributor.authorBragaglia, A.
dc.contributor.authorFlaccomio, E.
dc.contributor.authorFrancois, P.
dc.contributor.authorKorn, A. J.
dc.contributor.authorLanzafame, A.
dc.contributor.authorPancino, E.
dc.contributor.authorRecio Blanco, A.
dc.contributor.authorSmiljanic, R.
dc.contributor.authorCarraro, G.
dc.contributor.authorCostado, M. T.
dc.contributor.authorDamiani, F.
dc.contributor.authorDonati, P.
dc.contributor.authorFrasca, A.
dc.contributor.authorJofre, P.
dc.contributor.authorLardo, C.
dc.contributor.authorde Laverny, P.
dc.contributor.authorMonaco, L.
dc.contributor.authorPrisinzano, L.
dc.contributor.authorSbordone, L.
dc.contributor.authorSousa, S. G.
dc.contributor.authorTautvaisiene, G.
dc.contributor.authorZaggia, S.
dc.contributor.authorZwitter, T.
dc.contributor.authorDelgado Mena, E.
dc.contributor.authorChorniy, Y.
dc.contributor.authorMartell, S. L.
dc.contributor.authorAguirre, V. Silva
dc.contributor.authorMiglio, A.
dc.contributor.authorChiappini, C.
dc.contributor.authorMontalban, J.
dc.contributor.authorMorel, T.
dc.contributor.authorValentini, M.
dc.date.accessioned2024-01-10T13:43:49Z
dc.date.available2024-01-10T13:43:49Z
dc.date.issued2016
dc.description.abstractThe discovery of lithium-rich giants contradicts expectations from canonical stellar evolution. Here we report on the serendipitous discovery of 20 Li-rich giants observed during the Gaia-ESO Survey, which includes the first nine Li-rich giant stars known towards the CoRoT fields. Most of our Li-rich giants have near-solar metallicities and stellar parameters consistent with being before the luminosity bump. This is difficult to reconcile with deep mixing models proposed to explain lithium enrichment, because these models can only operate at later evolutionary stages: at or past the luminosity bump. In an effort to shed light on the Li-rich phenomenon, we highlight recent evidence of the tidal destruction of close-in hot Jupiters at the sub-giant phase. We note that when coupled with models of planet accretion, the observed destruction of hot Jupiters actually predicts the existence of Li-rich giant stars, and suggests that Li-rich stars should be found early on the giant branch and occur more frequently with increasing metallicity. A comprehensive review of all known Li-rich giant stars reveals that this scenario is consistent with the data. However, more evolved or metal-poor stars are less likely to host close-in giant planets, implying that their Li-rich origin requires an alternative explanation, likely related to mixing scenarios rather than external phenomena.
dc.description.funderESO Telescopes at the La Silla Paranal Observatory
dc.description.funderUK Science and Technology Facilities Council
dc.description.funderEuropean Union through ERC
dc.description.funderLeverhulme Trust
dc.description.funderINAF
dc.description.funderMinistero dell'Istruzione, dell'Universita e della Ricerca (MIUR)
dc.description.funderESF (European Science Foundation) through the GREAT Research Network Programme
dc.description.funderKnut and Alice Wallenberg Foundation
dc.description.funderRoyal Society
dc.description.funderChilean Ministry of Economy, Development, and Tourism's Millennium Science Initiative
dc.description.funderDanish National Research Foundation
dc.description.funderASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council
dc.description.funderVILLUM FONDEN
dc.description.funderAustralian Research Council
dc.description.funderBelspo
dc.description.funderEuropean Research Council
dc.description.funderScience and Technology Facilities Council
dc.fechaingreso.objetodigital2024-04-29
dc.format.extent17 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stw1512
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stw1512
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78762
dc.identifier.wosidWOS:000383481100076
dc.information.autorucAstrofísica;Sbordone L;S/I;243032
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final3352
dc.pagina.inicio3336
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsacceso restringido
dc.subjectstars: abundances
dc.subjectMASS RED GIANTS
dc.subjectPRE-MAIN-SEQUENCE
dc.subjectCLUSTER NGC 362
dc.subjectSUN-LIKE STARS
dc.subjectK-GIANTS
dc.subjectLITHIUM ABUNDANCES
dc.subjectGALACTIC BULGE
dc.subjectSTELLAR EVOLUTION
dc.subjectPLANET FORMATION
dc.subjectEVOLVED STARS
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleThe Gaia-ESO Survey: revisiting the Li-rich giant problem
dc.typeartículo
dc.volumen461
sipa.codpersvinculados243032
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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