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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 07535naa a2200865 4500 | |
| 001 | oai:lup.lub.lu.se:fd24124d-76ff-4b3a-9ee4-dd19f272c376 | |
| 003 | SwePub | |
| 008 | 220329s2021 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://lup.lub.lu.se/record/fd24124d-76ff-4b3a-9ee4-dd19f272c3762 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2021409352 DOI |
| 040 | a (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Magrini, L.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 245 | 1 0 | a The Gaia -ESO survey: Mixing processes in low-mass stars traced by lithium abundance in cluster and field stars |
| 264 | c 2021-05-21 | |
| 264 | 1 | b EDP Sciences,c 2021 |
| 520 | a Aims. We aim to constrain the mixing processes in low-mass stars by investigating the behaviour of the Li surface abundance after the main sequence. We take advantage of the data from the sixth internal data release of Gaia-ESO, IDR6, and from the Gaia Early Data Release 3, EDR3s. Methods. We selected a sample of main-sequence, sub-giant, and giant stars in which the Li abundance is measured by the Gaia-ESO survey. These stars belong to 57 open clusters with ages from 130 Myr to about 7 Gyr and to Milky Way fields, covering a range in [Fe/H] between -1.0and +0.5 dex, with few stars between -1.0 and -2.5dex. We studied the behaviour of the Li abundances as a function of stellar parameters. We inferred the masses of giant stars in clusters from the main-sequence turn-off masses, and for field stars through comparison with stellar evolution models using a maximum likelihood technique. We compared the observed Li behaviour in field giant stars and in giant stars belonging to individual clusters with the predictions of a set of classical models and of models with mixing induced by rotation and thermohaline instability. Results. The comparison with stellar evolution models confirms that classical models cannot reproduce the observed lithium abundances in the metallicity and mass regimes covered by the data. The models that include the effects of both rotation-induced mixing and thermohaline instability account for the Li abundance trends observed in our sample in all metallicity and mass ranges. The differences between the results of the classical models and of the rotation models largely differ (up to 2 dex), making lithium the best element with which to constrain stellar mixing processes in low-mass stars. We discuss the nature of a sample of Li-rich stars. Conclusions. We demonstrate that the evolution of the surface abundance of Li in giant stars is a powerful tool for constraining theoretical stellar evolution models, allowing us to distinguish the effect of different mixing processes. For stars with well-determined masses, we find a better agreement of observed surface abundances and models with rotation-induced and thermohaline mixing. Rotation effects dominate during the main sequence and the first phases of the post-main-sequence evolution, and the thermohaline induced mixing after the bump in the luminosity function. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a Open clusters and associations: general | |
| 653 | a Stars: abundances | |
| 653 | a Stars: evolution | |
| 700 | 1 | a Lagarde, N.u University of Burgundy - Franche-Comté4 aut |
| 700 | 1 | a Charbonnel, C.u University of Toulouse,University of Geneva4 aut |
| 700 | 1 | a Franciosini, E.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Randich, S.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Smiljanic, R.u Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences4 aut |
| 700 | 1 | a Casali, G.u INAF - Osservatorio Astrofisico di Arcetri,University of Florence4 aut |
| 700 | 1 | a Viscasillas Vázquez, C.u Vilnius University4 aut |
| 700 | 1 | a Spina, L.u INAF - Osservatorio Astronomico di Padova4 aut |
| 700 | 1 | a Biazzo, K.u INAF-Osservatorio Astronomico di Roma4 aut |
| 700 | 1 | a Pasquini, L.u European Southern Observatory4 aut |
| 700 | 1 | a Bragaglia, A.u INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna4 aut |
| 700 | 1 | a Van Der Swaelmen, M.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Tautvaišienė, G.u Vilnius University4 aut |
| 700 | 1 | a Inno, L.u Parthenope University of Naples,INAF Osservatorio Astronomico di Capodimonte4 aut |
| 700 | 1 | a Sanna, N.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Prisinzano, L.u INAF-Osservatorio Astronomico di Roma4 aut |
| 700 | 1 | a Degl'Innocenti, S.u University of Pisa,INFN Section of Pisa4 aut |
| 700 | 1 | a Prada Moroni, P.u INFN Section of Pisa,University of Pisa4 aut |
| 700 | 1 | a Roccatagliata, V.u INFN Section of Pisa,INAF - Osservatorio Astrofisico di Arcetri,University of Pisa4 aut |
| 700 | 1 | a Tognelli, E.u INFN Section of Pisa,University of Pisa4 aut |
| 700 | 1 | a Monaco, L.u Andrés Bello National University4 aut |
| 700 | 1 | a De Laverny, P.u Côte d'Azur Observatory4 aut |
| 700 | 1 | a Delgado-Mena, E.u University of Porto4 aut |
| 700 | 1 | a Baratella, M.u INAF - Osservatorio Astronomico di Padova,University of Padova4 aut |
| 700 | 1 | a D'Orazi, V.u INAF - Osservatorio Astronomico di Padova4 aut |
| 700 | 1 | a Vallenari, A.u INAF - Osservatorio Astronomico di Padova4 aut |
| 700 | 1 | a Gonneau, A.u University of Cambridge4 aut |
| 700 | 1 | a Worley, C.u University of Cambridge4 aut |
| 700 | 1 | a Jiménez-Esteban, F.u CSIC Centro de Astrobiologia (INTA)4 aut |
| 700 | 1 | a Jofre, P.u Diego Portales University4 aut |
| 700 | 1 | a Bensby, T.u Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-tbe |
| 700 | 1 | a François, P.u Paris Observatory4 aut |
| 700 | 1 | a Guiglion, G.u Leibniz Institute for Astrophysics Potsdam (AIP)4 aut |
| 700 | 1 | a Bayo, A.u University of Valparaíso4 aut |
| 700 | 1 | a Jeffries, R. D.u Keele University4 aut |
| 700 | 1 | a Binks, A. S.u Keele University4 aut |
| 700 | 1 | a Gilmore, G.u University of Cambridge4 aut |
| 700 | 1 | a Damiani, F.u INAF-Osservatorio Astronomico di Roma4 aut |
| 700 | 1 | a Korn, A.u Lund University4 aut |
| 700 | 1 | a Pancino, E.u Italian Space Agency,INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Sacco, G. G.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Hourihane, A.u University of Cambridge4 aut |
| 700 | 1 | a Morbidelli, L.u INAF - Osservatorio Astrofisico di Arcetri4 aut |
| 700 | 1 | a Zaggia, S.u INAF - Osservatorio Astronomico di Padova4 aut |
| 710 | 2 | a INAF - Osservatorio Astrofisico di Arcetrib University of Burgundy - Franche-Comté4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 651q 651x 0004-6361x 1432-0746 |
| 856 | 4 | u http://dx.doi.org/10.1051/0004-6361/202140935y FULLTEXT |
| 856 | 4 | u https://eprints.keele.ac.uk/9572/1/2105.04866v1.pdf |
| 856 | 4 8 | u https://lup.lub.lu.se/record/fd24124d-76ff-4b3a-9ee4-dd19f272c376 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/202140935 |
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