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The Gaia -ESO surve...
The Gaia -ESO survey : Age-chemical-clock relations spatially resolved in the Galactic disc
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- Viscasillas Vázquez, C. (författare)
- Vilnius University,INAF - Osservatorio Astrofisico di Arcetri,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.;INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.
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- Magrini, L. (författare)
- INAF - Osservatorio Astrofisico di Arcetri,INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.
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- Casali, G. (författare)
- University of Bologna,INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna,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.
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- Tautvaišiene, G. (författare)
- Vilnius University,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.
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- Spina, L. (författare)
- INAF-Osservatorio Astronomico di Roma,INAF Padova Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy.
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- Van Der Swaelmen, M. (författare)
- INAF - Osservatorio Astrofisico di Arcetri,INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.,Univ Complutense Madrid, Dept Fis Tierra & Astrofis, Madrid 28040, Spain.;Univ Complutense Madrid, IPARCOS UCM, Madrid 28040, Spain.
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- Randich, S. (författare)
- INAF - Osservatorio Astrofisico di Arcetri,INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland.
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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,Dept Astron & Theoret Phys, Lund Observ, Box 43, S-22100 Lund, Sweden.
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- Bragaglia, A. (författare)
- INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna,INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.
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- Friel, E. (författare)
- Indiana University,Indiana Univ, Dept Astron, Swain West 318 727 East Third St, Bloomington, IN 47405 USA.,CSIC INTA, Ctr Astrobiol, Dept Astrofis, ESAC Campus,Camino Bajo Castillo S-N, Madrid 28692, Spain.
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- Feltzing, S. (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,Dept Astron & Theoret Phys, Lund Observ, Box 43, S-22100 Lund, Sweden.
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- Sacco, G. G. (författare)
- INAF - Osservatorio Astrofisico di Arcetri,INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.,Leibniz Inst Astrophys Potsdam, Sternwarte 16, D-14482 Potsdam, Germany.,Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
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- Turchi, A. (författare)
- INAF - Osservatorio Astrofisico di Arcetri,INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.
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- Jiménez-Esteban, F. (författare)
- CSIC Centro de Astrobiologia (INTA),INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy.
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- D'Orazi, V. (författare)
- INAF-Osservatorio Astronomico di Roma
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- Delgado-Mena, E. (författare)
- University of Porto,Univ Porto, CAUP, Inst Astrofis & Ciencias Espaco, Rua Estrelas, P-4150762 Porto, Portugal.
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- Drazdauskas, A. (författare)
- Vilnius University,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.
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- Minkevičiūte, R. (författare)
- Vilnius University,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.
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- Stonkute, E. (författare)
- Vilnius University,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.
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- Bagdonas, V. (författare)
- Vilnius University,Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Av 3, LT-10257 Vilnius, Lithuania.
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- Montes, D. (författare)
- Complutense University of Madrid
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- Guiglion, G. (författare)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Baratella, M. (författare)
- Leibniz Institute for Astrophysics Potsdam (AIP)
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- Tabernero, H. M. (författare)
- CSIC Centro de Astrobiologia (INTA)
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- Gilmore, G. (författare)
- University of Cambridge
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- Alfaro, E. (författare)
- CSIC Instituto de Astrofísica de Andalucía (IAA),CSIC, Inst Astrofis Andalucia, Granada 18080, Spain.
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- Francois, P. (författare)
- Paris Observatory,Univ Paris Diderot, CNRS, GEPI, Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Korn, Andreas, 1972- (författare)
- Uppsala universitet,Uppsala University,Teoretisk astrofysik,Observationell astrofysik
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- Smiljanic, R. (författare)
- Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
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- Bergemann, M. (författare)
- Max Planck Institute for Astronomy
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- Franciosini, E. (författare)
- INAF - Osservatorio Astrofisico di Arcetri
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- Gonneau, A. (författare)
- University of Cambridge,Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
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- Hourihane, A. (författare)
- University of Cambridge,Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
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- Worley, C. C. (författare)
- University of Cambridge,Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
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- Zaggia, S. (författare)
- INAF-Osservatorio Astronomico di Roma,INAF Padova Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy.
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(creator_code:org_t)
- 2022-04-26
- 2022
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 660
- Relaterad länk:
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http://dx.doi.org/10... (free)
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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
Ämnesord
Stäng
- Context. The last decade has seen a revolution in our knowledge of the Galaxy thanks to the Gaia and asteroseismic space missions and the ground-based spectroscopic surveys. Aims. To complete this picture, it is necessary to map the ages of its stellar populations. During recent years, the dependence on time of abundance ratios involving slow (s) neutron-capture and α elements (called chemical-clocks) has been used to provide estimates of stellar ages, usually in a limited volume close to the Sun. We aim to analyse the relations of chemical clocks in the Galactic disc extending the range to RGC∼ 6- 20 kpc. Methods. Using the sixth internal data release of the Gaia-ESO survey, we calibrated several relations between stellar ages and abundance ratios [s/α] using a sample of open clusters, the largest one so far used with this aim (62 clusters). Thanks to their wide galactocentric coverage, we investigated the radial variations of the shape of these relations, confirming their non-universality. Results. The multi-variate relations allowed us to infer stellar ages for field stars. We estimated our accuracy (ranging from 0.0 to -0.9 Gyr) and precision (from 0.4 to 2.3 Gyr) in recovering the global ages of open clusters, and the ages of their individual members. We applied the relations with the highest correlation coefficients to the field star population, finding an older population at lower metallicity and higher [α/Fe] in the thin disc, and a younger one at higher [Fe/H] and low [α/Fe], as expected. Conclusion. We confirm that there is no single age-chemical clock relationship valid for the whole disc, but that there is a dependence on the galactocentric position, which is related to the radial variation of the star formation history combined with the non-monotonic dependence on metallicity of the yields of the s-process elements from low- and intermediate-mass stars. Finally, the abundance ratios [Ba/α] are more sensitive to age than those with [Y/α] for young disc stars, and their slopes vary less with galactocentric distance. We remind the reader that the application of such relationships to field stars is only of statistical value.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Galaxy: abundances
- Galaxy: disk
- Open clusters and associations: general
- Stars: abundances
- Galaxy: abundances
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Viscasillas Vázq ...
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Magrini, L.
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Casali, G.
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Tautvaišiene, G.
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Spina, L.
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Van Der Swaelmen ...
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visa fler...
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Randich, S.
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Bensby, T.
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Bragaglia, A.
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Friel, E.
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Feltzing, S.
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Sacco, G. G.
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Turchi, A.
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Jiménez-Esteban, ...
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D'Orazi, V.
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Delgado-Mena, E.
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Drazdauskas, A.
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Minkevičiūte, R.
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Stonkute, E.
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Bagdonas, V.
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Montes, D.
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Guiglion, G.
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Baratella, M.
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Tabernero, H. M.
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Gilmore, G.
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Alfaro, E.
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Francois, P.
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Korn, Andreas, 1 ...
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Smiljanic, R.
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Bergemann, M.
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Franciosini, E.
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Gonneau, A.
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Hourihane, A.
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Worley, C. C.
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Zaggia, S.
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