The Gaia-ESO Survey: The origin and evolution of s-process elements
| العنوان: | The Gaia-ESO Survey: The origin and evolution of s-process elements |
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| المؤلفون: | Thomas Bensby, Angela Bragaglia, F. Damiani, S. Duffau, L. Prisinzano, Andreas Korn, Eileen D. Friel, Rosaria Bonito, Lorenzo Monaco, Thomas Masseron, P. Francois, S. G. Sousa, Rodolfo Smiljanic, P. Donati, Laura Magrini, M. T. Costado, Veronica Roccatagliata, Sergey E. Koposov, V. Adibekyan, G. G. Sacco, Gražina Tautvaišienė, Nicoletta Sanna, Elena Pancino, L. Morbidelli, Sofia Randich, Alejandra Recio-Blanco, Antonio Frasca, Gerard Gilmore, F. M. Jiménez-Esteban, Jack Lewis, Antonella Vallenari, Lorenzo Spina, E. Delgado-Mena, V. Bagdonas, Paula Jofre, Andrew R. Casey, E. Franciosini, Sofia Feltzing, Emilio J. Alfaro, P. de Laverny, Giovanni Carraro, Simone Zaggia, C. C. Worley, A. Hourihane, Georges Kordopatis, R. D. Jeffries, Luca Sbordone, Amelia Bayo |
| المساهمون: | European Research Council, Leverhulme Trust, Istituto Nazionale di Astrofisica, European Science Foundation, Ministerio de Economía y Competitividad (España), European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Science and Technology Facilities Council (UK), Ministerio de Economía, Fomento y Turismo (Chile), Ministry of Science and Higher Education (Poland), Knut and Alice Wallenberg Foundation, Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), Centro de Astrofísica da Universidade do Porto (CAUP), Universidade do Porto, Istituto di Astrofisica Spaziale e Fisica cosmica - Palermo (IASF-Pa), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institute of Astronomy [Cambridge], University of Cambridge [UK] (CAM), Lund Observatory, Lund University [Lund], Keele University [Keele], INAF - Osservatorio Astronomico di Padova (OAPD), Department of Astronomy and Space Physics [Uppsala], Uppsala University, Focas Research Institute, Dublin Institute of Technology, University of Turin, INAF - Osservatorio Astrofisico di Catania (OACT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Istituto Nazionale di Fisica Nucleare (INFN), Worley, Clare [0000-0001-9310-2898], Gilmore, Gerard [0000-0003-4632-0213], Apollo - University of Cambridge Repository |
| المصدر: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 617, pp.A106. ⟨10.1051/0004-6361/201832841⟩ Digital.CSIC. Repositorio Institucional del CSIC instname Magrini, L, Spina, L, Randich, S, Friel, E, Kordopatis, G, Worley, C, Pancino, E, Bragaglia, A, Donati, P, Tautvaivsiene, G, Bagdonas, V, Delgado-Mena, E, Adibekyan, V, Sousa, S G, Jimenez-Esteban, F M, Sanna, N, Roccatagliata, V, Bonito, R, Sbordone, L, Duffau, S, Gilmore, G, Feltzing, S, Jeffries, R D, Vallenari, A, Alfaro, E J, Bensby, T, Francois, P, Koposov, S, Korn, A J, Recio-Blanco, A, Smiljanic, R, Bayo, A, Carraro, G, Casey, A R, Costado, M T, Damiani, F, Franciosini, E, Frasca, A, Hourihane, A, Jofre, P, Laverny, P D, Lewis, J, Masseron, T, Monaco, L, Morbidelli, L, Prisinzano, L, Sacco, G & Zaggia, S 2018, ' The Gaia-ESO Survey: the origin and evolution of s-process elements ', Astronomy and Astrophysics . https://doi.org/10.1051/0004-6361/201832841 Astronomy & Astrophysics |
| بيانات النشر: | EDP Sciences, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | astro-ph.GA, Metallicity, FOS: Physical sciences, Context (language use), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy: disk, Astronomi, astrofysik och kosmologi, Abundance (ecology), QB460, 0103 physical sciences, Astronomy, Astrophysics and Cosmology, Astrophysics::Solar and Stellar Astrophysics, Disc, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Physics, general [Open clusters and associations], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Open clusters and associations: general, Astrophysics - Astrophysics of Galaxies, Stars, Abundances [Galaxy], [SDU]Sciences of the Universe [physics], 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Galaxy: abundances, Astrophysics::Earth and Planetary Astrophysics, Disk [Galaxy], s-process, Open cluster |
| الوصف: | Context. Several works have found an increase of the abundances of the s-process neutron-capture elements in the youngest Galactic stellar populations. These trends provide important constraints on stellar and Galactic evolution and they need to be confirmed with large and statistically significant samples of stars spanning wide age and distance intervals. Aims. We aim to trace the abundance patterns and the time evolution of five s-process elements - two belonging to the first peak, Y and Zr, and three belonging to the second peak, Ba, La, and Ce - using the Gaia-ESO IDR5 results for open clusters and disc stars. Methods. From the UVES spectra of cluster member stars, we determined the average composition of clusters with ages >0.1 Gyr. We derived statistical ages and distances of field stars, and we separated them into thin and thick disc populations. We studied the time-evolution and dependence on metallicity of abundance ratios using open clusters and field stars whose parameters and abundances were derived in a homogeneous way. Results. Using our large and homogeneous sample of open clusters, thin and thick disc stars, spanning an age range larger than 10 Gyr, we confirm an increase towards young ages of s-process abundances in the solar neighbourhood. These trends are well defined for open clusters and stars located nearby the solar position and they may be explained by a late enrichment due to significant contribution to the production of these elements from long-living low-mass stars. At the same time, we find a strong dependence of the s-process abundance ratios on the Galactocentric distance and on the metallicity of the clusters and field stars. Conclusions. Our results, derived from the largest and most homogeneous sample of s-process abundances in the literature, confirm the growth with decreasing stellar ages of the s-process abundances in both field and open cluster stars. At the same time, taking advantage of the abundances of open clusters located in a wide Galactocentric range, these results offer a new perspective on the dependence of the s-process evolution on the metallicity and star formation history, pointing to different behaviours at various Galactocentric distances.© 2018 ESO. We are grateful to the referee for her/his comments and suggestions, which improved the quality of the paper. These data products have been processed by the Cambridge Astronomy Survey Unit (CASU) at the Institute of Astronomy, University of Cambridge, and by the FLAMES/UVES reduction team at INAF/Osservatorio Astrofisico di Arcetri. These data have been obtained from the Gaia-ESO Survey Data Archive, prepared and hosted by the Wide Field Astronomy Unit, Institute for Astronomy, University of Edinburgh, which is funded by the UK Science and Technology Facilities Council. This work was partly supported by the European Union FP7 programme through ERC grant number 320360 and by the Leverhulme Trust through grant RPG-2012-541. We acknowledge the support from INAF and Ministero dell' Istruzione, dell' Universita' e della Ricerca (MIUR) in the form of the grant >Premiale VLT 2012>. The results presented here benefit from discussions held during the Gaia-ESO workshops and conferences supported by the ESF (European Science Foundation) through the GREAT Research Network Programme. F.J.E. acknowledges financial support from ASTERICS project (ID: 653477, H2020-EU.1.4.1.1. - Developing new world-class research infrastructures). S. D. acknowledges support from Comite Mixto ESO-GOBIERNO DE CHILE. AB thanks for support from the Millenium Science Initiative, Chilean Ministry of Economy. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 664931. E.D.M., V.A. and S.G.S. acknowledge the support from Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) through the research grant through national funds and by FEDER through COMPETE2020 by grants UID/FIS/04434/2013 & POCI-01-0145-FEDER-007672, PTDC/FIS-AST/1526/2014 & POCI-01-0145-FEDER-016886 and PTDC/FIS-AST/7073/2014 & POCI-01-0145-FEDER-016880. E.D-M., V.A. and S.G.S also acknowledge support from FCT through Investigador FCT contracts nr. IF/00849/2015/CP1273/CT0003, IF/00650/2015/CP1273/CT0001 and IF/00028/2014/CP1215/CT0002. T.B. was supported by the project grant >The New Milky> from the Knut and Alice Wallenberg foundation. T.M. acknowledges support provided by the Spanish Ministry of Economy and Competitiveness (MINECO) under grant AYA-2017-88254-P. R.S. acknowledges support from the Polish Ministry of Science and Higher Education. E.J.A. acknowledges financial support from MINECO, Spain, and FEDER funds through grant AYA2016-75931-C2-1-P. |
| وصف الملف: | application/pdf |
| تدمد: | 0004-6361 |
| DOI: | 10.1051/0004-6361/201832841⟩ |
| DOI: | 10.1051/0004-6361/201832841 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78916909f3e2d2918959e484dbfa2ba2 http://hdl.handle.net/10261/212069 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....78916909f3e2d2918959e484dbfa2ba2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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| DOI: | 10.1051/0004-6361/201832841⟩ |