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The Gaia-ESO Survey: Insights into the inner-disc evolution from open clusters
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- Magrini, L. (author)
- INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy.
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- Randich, S. (author)
- INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy.,Nicolaus Copernicus Astron Ctr, Dept Astrophys, PL-87100 Torun, Poland.,INAF Osservatorio Astron Padova, I-35122 Padua, Italy.
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- Donati, P. (author)
- INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy.;Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy.
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- Bragaglia, A. (author)
- INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy.
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- Adibekyan, V. (author)
- Univ Porto, CAUP, Inst Astrofis & Ciencias Espaco, P-4150762 Oporto, Portugal.,INAF Osservatorio Astron Padova, I-35122 Padua, Italy.
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- Romano, D. (author)
- INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy.
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Smiljanic, R. (author)
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- Blanco-Cuaresma, S. (author)
- Univ Geneva, Observ Geneve, CH-1290 Versoix, Switzerland.
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- Tautvaisiene, G. (author)
- Vilnius State Univ, Inst Theoret Phys & Astron, LT-01108 Vilnius, Lithuania.,Univ Padua, Dipartimento Fis & Astron, I-35122 Padua, Italy.;INAF Osservatorio Astron Padova, I-35122 Padua, Italy.
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- Friel, E. (author)
- Indiana Univ, Dept Astron, Bloomington, IN 47405 USA.
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- Overbeek, J. (author)
- Indiana Univ, Dept Astron, Bloomington, IN 47405 USA.
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- Jacobson, H. (author)
- MIT, Dept Phys, Cambridge, MA 02139 USA.;MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
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Cantat-Gaudin, T. (author)
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Vallenari, A. (author)
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Sordo, R. (author)
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- Pancino, E. (author)
- INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy.;ASI Sci Data Ctr, I-00133 Rome, Italy.
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- Geisler, D. (author)
- Univ Concepcion, Dept Astron, Concepcion, Chile.
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- San Roman, I. (author)
- CEFCA, Teruel 44001, Spain.
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- Villanova, S. (author)
- Univ Concepcion, Dept Astron, Concepcion, Chile.
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- Casey, A. (author)
- Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
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- Hourihane, A. (author)
- Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
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- Worley, C. C. (author)
- Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
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- Francois, P. (author)
- Univ Paris Diderot, CNRS, Observ Paris, GEPI, F-92190 Meudon, France.
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- Gilmore, G. (author)
- Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.,European So Observ, Santiago 19, Chile.,INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy.;Univ Porto, Dept Fis & Astron, Fac Ciencias, P-4169007 Oporto, Portugal.,Univ Porto, CAUP, Inst Astrofis & Ciencias Espaco, P-4150762 Oporto, Portugal.
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- Bensby, Thomas (author)
- 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,Lund Univ, Dept Astron & Theoret Phys, S-22100 Lund, Sweden.
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- Flaccomio, E. (author)
- INAF Osservatorio Astron Palermo, I-90134 Palermo, Italy.
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- Korn, Andreas (author)
- Uppsala universitet,Teoretisk astrofysik
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- Recio-Blanco, A. (author)
- Univ Nice Sophia Antipolis, Lab Lagrange UMR 7293, CNRS, Observ Cote dAzur, F-06304 Nice 4, France.
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Carraro, G. (author)
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- Costado, M. T. (author)
- CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain.
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- Franciosini, E. (author)
- INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy.
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- Heiter, U. (author)
- Lund Univ, Dept Astron & Theoret Phys, S-22100 Lund, Sweden.
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- Jofre, P. (author)
- Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
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- Lardo, C. (author)
- Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England.
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- de Laverny, P. (author)
- Univ Nice Sophia Antipolis, Lab Lagrange UMR 7293, CNRS, Observ Cote dAzur, F-06304 Nice 4, France.
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- Monaco, L. (author)
- Univ Andres Bello, Dept Ciencias Fis, Santiago 8370134, Chile.
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- Morbidelli, L. (author)
- INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy.
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Sacco, G. (author)
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Sousa, S. G. (author)
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- Zaggia, S. (author)
- INAF Osservatorio Astron Padova, I-35122 Padua, Italy.
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INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy Nicolaus Copernicus Astron Ctr, Dept Astrophys, PL-87100 Torun, Poland. (creator_code:org_t)
- 2015-08-06
- 2015
- English.
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In: Astronomy & Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 580
- Related links:
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http://dx.doi.org/10...
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https://www.aanda.or...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- Context. The inner disc, which links the thin disc with the bulge, has been somewhat neglected in the past because of the intrinsic difficulties in its study, among which crowding and high extinction. Open clusters located in the inner disc are among the best tracers of its chemistry at different ages and distances. Aims. We analyse the chemical patterns of four open clusters located within 7 kpc of the Galactic centre and of field stars to infer the properties of the inner disc with the Gaia-ESO survey idr2/3 data release. Methods. We derive the parameters of the newly observed cluster, Berkeley 81, finding an age of about 1 Gyr and a Galactocentric distance of similar to 5.4 kpc. We construct the chemical patterns of clusters and we compare them with those of field stars in the solar neighbourhood and in the inner-disc samples. Results. Comparing the three populations we observe that inner-disc clusters and field stars are both, on average, enhanced in [O/Fe], [Mg/Fe], and [Si/Fe]. Using the idr2/3 results of M67, we estimate the non-local thermodynamic equilibrium (NLTE) effect on the abundances of Mg and Si in giant stars. After empirically correcting for NLTE effects, we note that NGC 6705 and Be 81 still have a high [alpha/Fe]. Conclusions. The location of the four open clusters and of the field population reveals that the evolution of the metallicity [Fe/H] and of [alpha/Fe] can be explained within the framework of a simple chemical evolution model: both [Fe/H] and [alpha/Fe] of Trumpler 20 and of NGC 4815 are in agreement with expectations from a simple chemical evolution model. On the other hand, NGC 6705, and to a lesser degree Berkeley 81, have higher [alpha/Fe] than expected for their ages, location in the disc, and metallicity. These differences might originate from local enrichment processes as explained in the inhomogeneous evolution framework.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- individual: NGC 4815
- globular clusters
- clusters and associations: individual: NGC 6705
- Galaxy: disk
- clusters and associations: individual: Trumpler 20
- open
- Galaxy: abundances
- open clusters and associations: general
- Galaxy: abundances
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Magrini, L.
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Randich, S.
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Donati, P.
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Bragaglia, A.
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Adibekyan, V.
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Romano, D.
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show more...
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Smiljanic, R.
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Blanco-Cuaresma, ...
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Tautvaisiene, G.
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Friel, E.
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Overbeek, J.
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Jacobson, H.
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Cantat-Gaudin, T ...
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Vallenari, A.
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Sordo, R.
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Pancino, E.
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Geisler, D.
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San Roman, I.
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Villanova, S.
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Casey, A.
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Hourihane, A.
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Worley, C. C.
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Francois, P.
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Gilmore, G.
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Bensby, Thomas
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Flaccomio, E.
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Korn, Andreas
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Recio-Blanco, A.
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Carraro, G.
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Costado, M. T.
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Franciosini, E.
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Heiter, U.
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Jofre, P.
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Lardo, C.
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de Laverny, P.
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Monaco, L.
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Morbidelli, L.
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Sacco, G.
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Sousa, S. G.
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Zaggia, S.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy & Astr ...
- By the university
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Lund University
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Uppsala University