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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00006886naa a2200661 4500
001oai:DiVA.org:uu-419694
003SwePub
008200924s2020 | |||||||||||000 ||eng|
009oai:lup.lub.lu.se:77543f39-4a69-4f63-beec-37f7ab1113d4
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4196942 URI
0247 a https://doi.org/10.1051/0004-6361/2020384352 DOI
0247 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 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Sanna, N.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut
2451 0a The Gaia-ESO Survey :b an extremely Li-rich giant in globular cluster NGC 1261
264 c 2020-07-03
264 1b 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 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a 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
7001 a Franciosini, E.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut
7001 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
7001 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
7001 a Tsantaki, M.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut
7001 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
7001 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
7001 a Fu, X.u Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China.,Peking University4 aut
7001 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
7001 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
7001 a Tautvaisiene, G.u Vilnius Univ, Astron Observ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.,Vilnius University4 aut
7001 a Magrini, L.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut
7001 a Randich, S.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.4 aut
7001 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
7001 a Korn, Andreas J.,d 1972-u Uppsala University,Uppsala universitet,Observationell astrofysik4 aut0 (Swepub:uu)ankor103
7001 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
7001 a Bergemann, M.u Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.,Max Planck Institute for Astronomy4 aut
7001 a Carraro, G.u Univ Padua, Dipartimento Fis & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy.,University of Padova4 aut
7001 a Morbidelli, L.u INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,INAF - Osservatorio Astrofisico di Arcetri4 aut
7102 a INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.b INAF - Osservatorio Astrofisico di Arcetri4 org
7730 t Astronomy and Astrophysicsd : EDP SCIENCES S Ag 639q 639x 0004-6361x 1432-0746
8564 u https://www.aanda.org/articles/aa/pdf/2020/07/aa38435-20.pdf
8564 u http://dx.doi.org/10.1051/0004-6361/202038435y FULLTEXT
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-419694
8564 8u https://doi.org/10.1051/0004-6361/202038435
8564 8u https://lup.lub.lu.se/record/77543f39-4a69-4f63-beec-37f7ab1113d4

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