[en] Context. Stellar evolution models predict that internal mixing should cause some sodium overabundance at the surface of red giants more massive than ~1.5-2.0 M[SUB]⊙[/SUB]. The surface aluminium abundance should not be affected. Nevertheless, observational results disagree about the presence and/or the degree of Na and Al overabundances. In addition, Galactic chemical evolution models adopting different stellar yields lead to very different predictions for the behavior of [Na/Fe] and [Al/Fe] versus [Fe/H]. Overall, the observed trends of these abundances with metallicity are not well reproduced. <BR /> Aims: We readdress both issues, using new Na and Al abundances determined within the Gaia-ESO Survey. Our aim is to obtain better observational constraints on the behavior of these elements using two samples: i) more than 600 dwarfs of the solar neighborhood and of open clusters and ii) low- and intermediate-mass clump giants in six open clusters. <BR /> Methods: Abundances were determined using high-resolution UVES spectra. The individual Na abundances were corrected for nonlocal thermodynamic equilibrium effects. For the Al abundances, the order of magnitude of the corrections was estimated for a few representative cases. For giants, the abundance trends with stellar mass are compared to stellar evolution models. For dwarfs, the abundance trends with metallicity and age are compared to detailed chemical evolution models. <BR /> Results: Abundances of Na in stars with mass below ~2.0 M[SUB]⊙[/SUB], and of Al in stars below ~3.0 M[SUB]⊙[/SUB], seem to be unaffected by internal mixing processes. For more massive stars, the Na overabundance increases with stellar mass. This trend agrees well with predictions of stellar evolutionary models. For Al, our only cluster with giants more massive than 3.0 M[SUB]⊙[/SUB], NGC 6705, is Al enriched. However, this might be related to the environment where the cluster was formed. Chemical evolution models that well fit the observed [Na/Fe] vs. [Fe/H] trend in solar neighborhood dwarfs cannot simultaneously explain the run of [Al/Fe] with [Fe/H], and vice versa. The comparison with stellar ages is hampered by severe uncertainties. Indeed, reliable age estimates are available for only a half of the stars of the sample. We conclude that Al is underproduced by the models, except for stellar ages younger than about 7 Gyr. In addition, some significant source of late Na production seems to be missing in the models. Either current Na and Al yields are affected by large uncertainties, and/or some important Galactic source(s) of these elements has as yet not been taken into account. Based on observations made with the ESO/VLT, at Paranal Observatory, under program 188.B-3002 (The Gaia-ESO Public Spectroscopic Survey), and on data obtained from the ESO Archive originally observed under programs 60.A-9143, 076.B-0263 and 082.D-0726.Table 1 is only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/589/A115">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/589/A115</A>
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Smiljanic, R.; Department for Astrophysics, Nicolaus Copernicus Astronomical Center, ul. Rabiańska 8, 87-100, Toruń, Poland
Romano, D.; INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy
Bragaglia, A.; INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy
Donati, P.; INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy ; Dipartimento di Fisica e Astronomia, Università di Bologna, via Ranzani 1, 40127, Bologna, Italy
Magrini, L.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5 , 50125, Firenze, Italy
Friel, E.; Department of Astronomy, Indiana University, Bloomington, IN, 47405, USA
Jacobson, H.; Kavli Institute for Astrophysics & Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
Randich, S.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5 , 50125, Firenze, Italy
Ventura, P.; INAF-Osservatorio Astronomico di Roma, via Frascati 33, 00040, Monte Porzio Catone, RM, Italy
Lind, K.; Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden ; Max Planck Institute für Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Bergemann, M.; Max Planck Institute für Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Nordlander, T.; Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden
Morel, Thierry ; Université de Liège > Groupe d'astrophysique des hautes énergies (GAPHE)
Pancino, E.; INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy ; ASI Science Data Center, via del Politecnico SNC, 00133, Roma, Italy
Tautvaišienė, G.; Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, 01108, Vilnius, Lithuania
Adibekyan, V.; Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal
Tosi, M.; INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy
Koposov, S.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Lanzafame, A. C.; Dipartimento di Fisica e Astronomia, Sezione Astrofisica, Universitá di Catania, via S. Sofia 78, 95123, Catania, Italy
Recio-Blanco, A.; Laboratoire Lagrange (UMR7293), Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur, CS 34229, 06304, Nice Cedex 4, France
Bayo, A.; Instituto de Física y Astronomía, Universidad de Valparaíso, Chile
Carraro, G.; European Southern Observatory, Alonso de Cordova 3107 Vitacura, Santiago de Chile, Chile
Casey, A. R.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Costado, M. T.; Instituto de Astrofísica de Andalucía-CSIC, Apdo. 3004, 18080, Granada, Spain
Franciosini, E.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5 , 50125, Firenze, Italy
Heiter, U.; Department of Physics and Astronomy, UppsalaUniversity, Box 516, 751 20, Uppsala, Sweden
Hill, V.; Laboratoire Lagrange (UMR7293), Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur, CS 34229, 06304, Nice Cedex 4, France
Hourihane, A.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Jofré, P.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Lardo, C.; Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool, L3 5RF, UK
de Laverny, P.; Laboratoire Lagrange (UMR7293), Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur, CS 34229, 06304, Nice Cedex 4, France
Lewis, J.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Monaco, L.; Departamento de Ciencias Fisicas, Universidad Andres Bello, Republica 220, Santiago, Chile
Morbidelli, L.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5 , 50125, Firenze, Italy
Sacco, G. G.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5 , 50125, Firenze, Italy
Sbordone, L.; Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile ; Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile
Sousa, S. G.; Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal
Worley, C. C.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Adibekyan, V. Z., Sousa, S. G., Santos, N. C., et al. 2012, A&A, 545, A32
Adibekyan V. Z., Benamati, L., Santos, N. C., et al. 2015, MNRAS, 450, 1900
Alexeeva S. A., Pakhomov, Y. V., & Mashonkina, L. I. 2014, Astron. Lett., 40, 406
Andrievsky S. M., Egorova, I. A., Korotin, S. A., & Burnage, R. 2002, A&A, 389, 519
Andrievsky S. M., Spite, M., Korotin, S. A., et al. 2007, A&A, 464, 1081
Andrievsky S. M., Spite, M., Korotin, S. A., et al. 2008, A&A, 481, 481
Arnett W. D., & Thielemann, F.-K. 1985, ApJ, 295, 589
Aurière M. 2003, in EAS PS 9, eds. J. Arnaud, & N. Meunier, 105
Baglin A., Auvergne, M., Boisnard, L., et al. 2006, in COSPAR Meeting, 36, 36th COSPAR Scientific Assembly, 3749
Baudin F., Barban, C., Goupil, M. J., et al. 2012, A&A, 538, A73
Baumueller D., & Gehren, T. 1996, A&A, 307, 961
Baumueller D., & Gehren, T. 1997, A&A, 325, 1088
Beaver J., Kaltcheva, N., Briley, M., & Piehl, D. 2013, PASP, 125, 1412
Belyaev A. K. 2013, A&A, 560, A60
Bensby T., Feltzing, S., & Oey, M. S. 2014, A&A, 562, A71
Bergemann M., Ruchti, G. R., Serenelli, A., et al. 2014, A&A, 565, A89
Carretta E., Gratton, R. G., & Sneden, C. 2000, A&A, 356, 238
Carretta E., Bragaglia, A., Gratton, R. G., & Tosi, M. 2005, A&A, 441, 131
Cayrel R., Depagne, E., Spite, M., et al. 2004, A&A, 416, 1117
Charbonnel C., & Lagarde, N. 2010, A&A, 522, A10
Chieffi A., & Limongi, M. 2015, in IAU Symp. 307, eds. G. Meynet, C. Georgy, J. Groh, & P. Stee, 1
Collet R., Asplund, M., & Trampedach, R. 2007, A&A, 469, 687
Cunha K., Smith, V. V., Johnson, J. A., et al. 2015, ApJ, 798, L41
Dekker H., D'Odorico, S., Kaufer, A., Delabre, B., & Kotzlowski, H. 2000, in Optical and IR Telescope Instrumentation and Detectors, eds. M. Iye, & A. F. Moorwood, SPIE Conf. Ser., 4008, 534
Denissenkov P. A. 2005, ApJ, 622, 1058
Denisenkov P. A., & Denisenkova, S. N. 1990, Sov. Astron. Lett., 16, 275
Dobrovolskas V., Kučinskas, A., Steffen, M., et al. 2013, A&A, 559, A102
Doherty C. L., Gil-Pons, P., Lau, H. H. B., Lattanzio, J. C., & Siess, L. 2014, MNRAS, 437, 195
Donati P., Beccari, G., Bragaglia, A., Cignoni, M., & Tosi, M. 2014a, MNRAS, 437, 1241
Donati P., Cantat Gaudin, T., Bragaglia, A., et al. 2014b, A&A, 561, A94
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.