Sökning: onr:"swepub:oai:DiVA.org:uu-419694" > The Gaia-ESO Survey :
Fältnamn | Indikatorer | Metadata |
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000 | 06886naa a2200661 4500 | |
001 | oai:DiVA.org:uu-419694 | |
003 | SwePub | |
008 | 200924s2020 | |||||||||||000 ||eng| | |
009 | oai:lup.lub.lu.se:77543f39-4a69-4f63-beec-37f7ab1113d4 | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4196942 URI |
024 | 7 | a https://doi.org/10.1051/0004-6361/2020384352 DOI |
024 | 7 | a https://lup.lub.lu.se/record/77543f39-4a69-4f63-beec-37f7ab1113d42 URI |
040 | a (SwePub)uud (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Sanna, N.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut |
245 | 1 0 | a The Gaia-ESO Survey :b an extremely Li-rich giant in globular cluster NGC 1261 |
264 | c 2020-07-03 | |
264 | 1 | b EDP SCIENCES S A,c 2020 |
338 | a print2 rdacarrier | |
520 | a Lithium-rich stars in globular clusters are rare. Only 14 have been found so far, in different evolutionary phases from dwarfs to giants. Different mechanisms have been proposed to explain this enhancement, but it is still an open problem. Using spectra collected within the Gaia-ESO Survey, obtained with the GIRAFFE spectrograph at the ESO Very Large Telescope, we present the discovery of the first Li-rich star in the cluster NGC 1261, the second star known in the red giant branch bump phase. The star shows an extreme Li overabundance of A(Li)(LTE)=3.92 +/- 0.14, corresponding to A(Li)(NLTE)=3.40 dex. We propose that the Li enhancement is caused by fresh Li production through an extra mixing process (sometimes referred to as cool bottom burning). Alternatively, it could be a pre-existing Li overabundance caused by mass-transfer from a red giant star; this mechanism does not enhance the barium abundance and thus we observe low barium. To unambiguously explain the Li enhancement in globular cluster stars, however, a reliable determination of the abundance of key species like Be, Li-6, C-12/C-13, and several s-process elements is required, as well as detailed modelling of chromospheric activity indicators. | |
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 surveys | |
653 | a techniques: spectroscopic | |
653 | a stars: chemically peculiar | |
653 | a globular clusters: individual: NGC 1261 | |
653 | a Globular clusters: individual: NGC 1261 | |
653 | a Stars: chemically peculiar | |
653 | a Surveys | |
653 | a Techniques: spectroscopic | |
700 | 1 | a Franciosini, E.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut |
700 | 1 | a Pancino, E.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.;ASI Sci Data Ctr, Via Politecn SNC, I-00133 Rome, Italy.,INAF - Osservatorio Astrofisico di Arcetri,Italian Space Agency4 aut |
700 | 1 | a Mucciarelli, A.u Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy.;INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,University of Bologna,INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna4 aut |
700 | 1 | a Tsantaki, M.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut |
700 | 1 | a Charbonnel, C.u Univ Geneva, Dept Astron, Chemin Maillettes 51, CH-1290 Versoix, Switzerland.;CNRS, UMR 5277, IRAP, 14 Av E Belin, F-31400 Toulouse, France.;Univ Toulouse, 14 Av E Belin, F-31400 Toulouse, France.,University of Geneva,University of Toulouse4 aut |
700 | 1 | a Smiljanic, R.u Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland.,Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences,INAF - Osservatorio Astrofisico di Arcetri4 aut |
700 | 1 | a Fu, X.u Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China.,Peking University4 aut |
700 | 1 | a Bragaglia, A.u INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.,INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna4 aut |
700 | 1 | a Lagarde, N.u Univ Bourgogne Franche Comte, OSU THETA Franche Comte Bourgogne, Inst UTINAM, Observ Besancon,CNRS,UMR 6213, BP 1615, F-25010 Besancon, France.,University of Burgundy - Franche-Comté,Observatoire de Besancon4 aut |
700 | 1 | a Tautvaisiene, G.u Vilnius Univ, Astron Observ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.,Vilnius University4 aut |
700 | 1 | a Magrini, L.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut |
700 | 1 | a Randich, S.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.4 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 Korn, Andreas J.,d 1972-u Uppsala University,Uppsala universitet,Observationell astrofysik4 aut0 (Swepub:uu)ankor103 |
700 | 1 | a Bayo, A.u Univ Valparaiso, Fac Ciencias, Inst Fis & Astron, Av Gran Bretana 1111,5030 Casilla, Valparaiso, Chile.;Univ Valparaiso, Nucleo Milenio Formac Planetaria NPF, Av Gran Bretana 1111, Valparaiso, Chile.,University of Valparaíso4 aut |
700 | 1 | a Bergemann, M.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.,Max Planck Institute for Astronomy4 aut |
700 | 1 | a Carraro, G.u Univ Padua, Dipartimento Fis & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy.,University of Padova4 aut |
700 | 1 | a Morbidelli, L.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut |
710 | 2 | a INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.b INAF - Osservatorio Astrofisico di Arcetri4 org |
773 | 0 | t Astronomy and Astrophysicsd : EDP SCIENCES S Ag 639q 639x 0004-6361x 1432-0746 |
856 | 4 | u https://www.aanda.org/articles/aa/pdf/2020/07/aa38435-20.pdf |
856 | 4 | u http://dx.doi.org/10.1051/0004-6361/202038435y FULLTEXT |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-419694 |
856 | 4 8 | u https://doi.org/10.1051/0004-6361/202038435 |
856 | 4 8 | u https://lup.lub.lu.se/record/77543f39-4a69-4f63-beec-37f7ab1113d4 |
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