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The Gaia-ESO Survey :
The Gaia-ESO Survey : Lithium enrichment histories of the Galactic thick and thin disc
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- Fu, X. (författare)
- Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy.;INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,INAF Osservatorio Astronomico di Bologna,University of Bologna
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- Romano, D. (författare)
- INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,INAF Osservatorio Astronomico di Bologna
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- Bragaglia, A. (författare)
- INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,INAF Osservatorio Astronomico di Bologna
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- Mucciarelli, A. (författare)
- Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy.;INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,University of Bologna,INAF Osservatorio Astronomico di Bologna
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- Lind, K. (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.,Max Planck Institute for Astronomy
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- Delgado Mena, E. (författare)
- Univ Porto, Inst Astrofis & Cencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal.,University of Porto
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- Sousa, S. G. (författare)
- Univ Porto, Inst Astrofis & Cencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal.,University of Porto
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- Randich, S. (författare)
- INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri,Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
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- Bressan, A. (författare)
- SISSA Int Sch Adv Studies, Via Bonomea 265, I-34136 Trieste, Italy.,International School For Advanced Studies (sissa/isas)
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- Sbordone, L. (författare)
- European Southern Observ, Alonso de Cordova 3107 Vitacura, Santiago, Chile.,European Southern Observatory Santiago
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- Martell, S. (författare)
- Univ New South Wales Sydney, Sydney, NSW 2052, Australia.,University of New South Wales
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- Korn, Andreas, 1972- (författare)
- Uppsala University,Uppsala universitet,Observationell astrofysik,Teoretisk astrofysik,Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden.
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- Abia, C. (författare)
- Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain.,University of Granada,University of Catania
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- Smiljanic, R. (författare)
- Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland.
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- Jofre, P. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.;Univ Diego Portales, Nucleo Astron, Ejercito 441, Santiago, Chile.,Diego Portales University,University of Cambridge
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- Pancino, E. (författare)
- INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri
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- Tautvaisiene, G. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Ave 3, LT-10257 Vilnius, Lithuania.,Vilnius University
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- Bensby, T. (författare)
- 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 Science
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- Magrini, L. (författare)
- INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri
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- Lanzafame, A. C. (författare)
- Univ Catania, Dipartimento Fis & Astron, Sez Astrofis, Via S Sofia 78, I-95123 Catania, Italy.
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- Carraro, G. (författare)
- Univ Padua, Dipartimento Fis & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy.,University of Padova
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- Bensby, T. (författare)
- Lund Observ, Dept Astron & Theoret Phys, Box 43, S-22100 Lund, Sweden.
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- Damiani, F. (författare)
- INAF Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy.,INAF Palermo Astronomical Observatory
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- Alfaro, E. J. (författare)
- CSIC, Inst Astrofis Andalucia, Apdo 3004, E-18080 Granada, Spain.,CSIC Instituto de Astrofísica de Andalucía (IAA)
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- Flaccomio, E. (författare)
- INAF Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy.,INAF Palermo Astronomical Observatory
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- Morbidelli, L. (författare)
- INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri
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- Zaggia, S. (författare)
- INAF Padova Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy.,INAF - Osservatorio Astronomico di Padova
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- Lardo, C. (författare)
- EPFL, Observ Sauverny, Astrophys Lab, CH-1290 Versoix, Switzerland.,Swiss Federal Institute of Technology
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- Monaco, L. (författare)
- Univ Andres Bello, Dept Ciencias Fis, Fernandez Concha 700, Santiago, Chile.,Andrés Bello National University
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- Frasca, A. (författare)
- Univ Catania, Dipartimento Fis & Astron, Sez Astrofis, Via S Sofia 78, I-95123 Catania, Italy.,University of Catania
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- Donati, P. (författare)
- INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,INAF Osservatorio Astronomico di Bologna
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- Drazdauskas, A. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Ave 3, LT-10257 Vilnius, Lithuania.,Vilnius University
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- Chorniy, Y. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Ave 3, LT-10257 Vilnius, Lithuania.,Vilnius University
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- Bayo, A. (författare)
- Univ Valparaiso, Inst Fis & Astron, Valparaiso, Chile.,University of Valparaíso
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- Kordopatis, G. (författare)
- CNRS, Observ Cote Azur, Lab Lagrange, UMR 7293, Nice 04, France.,Côte d'Azur Observatory
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Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy;INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy. INAF Osservatorio Astronomico di Bologna (creator_code:org_t)
- 2018-02-23
- 2018
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP SCIENCES S A. - 0004-6361 .- 1432-0746. ; 610
- Relaterad länk:
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https://www.aanda.or...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Lithium abundance in most of the warm metal-poor main sequence stars shows a constarnt plateau (A(Li) similar to 2.2 dex) and then the upper envelope of the lithium vs. metallicity distribution increases as we approach solar metallicity. Meteorites, which carry information about the chemical composition of the interstellar medium (ISM) at the solar system formation time, show a lithium abundance A(Li) similar to 3.26 dex. This pattern reflects the Li enrichment history of the ISM during the Galaxy lifetime. After the initial Li production in big bang nucleosynthesis, the sources of the enrichment include asymptotic giant branch (AGB) stars, low-mass red giants, novae, type II supernovae, and Galactic cosmic rays. The total amount of enriched Li is sensitive to the relative contribution of these sources. Thus different Li enrichment histories are expected in the Galactic thick and thin disc. We investigate the main sequence stars observed with UVES in Gaia-ESO Survey iDR4 catalogue and find a Li[alpha/Fe] anticorrelation independent of [Fe/H], T-eff, and log(g). Since in stellar evolution different alpha enhancements at the same metallicity do not lead to a measurable Li abundance change, the anticorrelation indicates that more Li is produced during the Galactic thin disc phase than during the Galactic thick disc phase. We also find a correlation between the abundance of Li and s-process elements Ba and Y, and they both decrease above the solar metallicity, which can be explained in the framework of the adopted Galactic chemical evolution models.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- stars: abundances
- Galaxy: abundances
- Galaxy: disk
- Galaxy: abundances
- Galaxy: disk
- Stars: abundances
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Fu, X.
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Romano, D.
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Bragaglia, A.
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Mucciarelli, A.
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Lind, K.
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Delgado Mena, E.
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visa fler...
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Sousa, S. G.
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Randich, S.
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Bressan, A.
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Sbordone, L.
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Martell, S.
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Korn, Andreas, 1 ...
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Abia, C.
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Smiljanic, R.
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Jofre, P.
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Pancino, E.
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Tautvaisiene, G.
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Bensby, T.
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Magrini, L.
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Lanzafame, A. C.
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Carraro, G.
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Damiani, F.
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Alfaro, E. J.
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Flaccomio, E.
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Morbidelli, L.
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Zaggia, S.
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Lardo, C.
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Monaco, L.
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Frasca, A.
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Donati, P.
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Drazdauskas, A.
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Chorniy, Y.
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Bayo, A.
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Kordopatis, G.
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