The Gaia -ESO survey: The inner disk intermediate-age open cluster NGC 6802

Based on data products from observations made with ESO Telescopes at the La Silla Paranal Observatory under programme ID 188.B-3002. 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. We thank the anonymous referee for insightful comments. D.G. , S.V., and B.T. gratefully acknowledges support from the Chilean BASAL Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) grant PFB-06/2007. C.M. acknowledges support from CONICYT-PCHA/Doctorado Nacional/2014-21141057. R.E.C. acknowledges funding from Gemini-CONICYT for Project 32140007. F.M. gratefully acknowledges the support provided by Fondecyt for project 314017. This work was partly supported (A.R.C.) by the European Union FP7 programme through grant number 320360. This work was partly supported (A.D., G.T., R.Ž.) by the grant from the Research Council of Lithuania (MIP-082/2015). S.G.S. acknowledge the support from FCT through Investigador FCT contract of reference IF/00028/2014 and the support from FCT through the project PTDC/FIS-AST/7073/2014. C.L. gratefully acknowledges financial support from the European Research Council (ERC-CoG-646928, Multi-Pop, PI: N. Bastian). V.A. acknowledges the support from the FCT (Portugal) in the form of the grant SFRH/BPD/70574/2010, the support by FCT through national funds (ref. PTDC/FIS-AST/7073/2014 and ref. PTDC/FIS-AST/1526/2014) and by FEDER through COMPETE2020 (ref. POCI-01-0145-FEDER-016880 and ref. POCI-01-0145-FEDER-016886).

[1]  A. Bragaglia,et al.  The Gaia-ESO Survey: radial distribution of abundances in the Galactic disc from open clusters and young-field stars , 2017, 1703.00762.

[2]  G. Carraro,et al.  The Gaia-ESO Survey: the inner disk, intermediate-age open cluster Trumpler 23 , 2016, 1611.00859.

[3]  A. Bragaglia,et al.  TheGaia-ESO Survey: Probes of the inner disk abundance gradient , 2016, Astronomy & Astrophysics.

[4]  B. Gibson,et al.  Chemical separation of disc components using RAVE , 2016, 1603.09339.

[5]  Sergey E. Koposov,et al.  The Gaia-ESO Survey: Sodium and aluminium abundances in giants and dwarfs. Implications for stellar and Galactic chemical evolution , 2016, 1602.03289.

[6]  G. Carraro,et al.  The Gaia-ESO Survey: membership and initial mass function of the γ Velorum cluster , 2016, 1601.06513.

[7]  J. Simon,et al.  R-process enrichment from a single event in an ancient dwarf galaxy , 2015, Nature.

[8]  Chris L. Fryer,et al.  NUGRID STELLAR DATA SET. I. STELLAR YIELDS FROM H TO BI FOR STARS WITH METALLICITIES Z = 0.02 and Z = 0.01 , 2013, 1307.6961.

[9]  Jennifer Werfel.  Handbook Of Isotopes In The Cosmos , 2016 .

[10]  A. Milone,et al.  The extended main-sequence turn-off cluster NGC 1856: rotational evolution in a coeval stellar ensemble , 2015, 1508.01932.

[11]  Sergey E. Koposov,et al.  The Gaia-ESO Survey: characterisation of the [α/Fe] sequences in the Milky Way discs , 2015, 1507.08066.

[12]  S. Cristallo,et al.  EVOLUTION, NUCLEOSYNTHESIS, AND YIELDS OF AGB STARS AT DIFFERENT METALLICITIES. III. INTERMEDIATE-MASS MODELS, REVISED LOW-MASS MODELS, AND THE pH-FRUITY INTERFACE , 2015, 1507.07338.

[13]  L. Girardi,et al.  PARSEC evolutionary tracks of massive stars up to 350 M ☉ at metallicities 0.0001 ≤ Z ≤ 0.04 , 2015, 1506.01681.

[14]  S. Woosley,et al.  THE REMARKABLE DEATHS OF 9–11 SOLAR MASS STARS , 2015, 1505.06712.

[15]  G. Carraro,et al.  The Gaia-ESO Survey: Insights into the inner-disc evolution from open clusters , 2015, 1505.04039.

[16]  D. Lambert,et al.  Comprehensive abundance analysis of red giants in the open clusters NGC 1342, 1662, 1912, 2354 and 2447 , 2015, 1504.05508.

[17]  S. O. Kepler,et al.  Extracting parameters from colour–magnitude diagrams , 2015, 1504.03520.

[18]  Jonathan C. Bird,et al.  CHEMICAL CARTOGRAPHY WITH APOGEE: METALLICITY DISTRIBUTION FUNCTIONS AND THE CHEMICAL STRUCTURE OF THE MILKY WAY DISK , 2015, 1503.02110.

[19]  Astronomy,et al.  Evidence of tidal distortions and mass-loss from the old open cluster NGC 6791 , 2015, 1511.00073.

[20]  U. Munari,et al.  The GALAH survey: scientific motivation , 2015, Monthly Notices of the Royal Astronomical Society.

[21]  G. Carraro,et al.  The Gaia-ESO Survey: CNO abundances in the open clusters Trumpler 20, NGC 4815, and NGC 6705 , 2014, 1411.2831.

[22]  R. Grijs,et al.  The exclusion of a significant range of ages in a massive star cluster , 2014, Nature.

[23]  A. Davis,et al.  Composite stellar populations and element by element abundances in the Milky Way bulge and elliptical galaxies , 2014, 1409.2481.

[24]  Mauro Barbieri,et al.  Improving PARSEC models for very low mass stars , 2014, 1409.0322.

[25]  L. Pasquini,et al.  The Gaia-ESO Survey: the analysis of high-resolution UVES spectra of FGK-type stars , 2014, 1409.0568.

[26]  M. Irwin,et al.  The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705 , 2014, 1407.1510.

[27]  J. Lattanzio,et al.  The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars , 2014, Publications of the Astronomical Society of Australia.

[28]  C. Babusiaux,et al.  The Gaia-ESO Survey: processing FLAMES-UVES spectra , 2014 .

[29]  M. Wiescher,et al.  GALACTIC CHEMICAL EVOLUTION AND SOLAR s-PROCESS ABUNDANCES: DEPENDENCE ON THE 13C-POCKET STRUCTURE , 2014, 1403.1764.

[30]  Sergey E. Koposov,et al.  Gaia-ESO Survey: Properties of the intermediate age open cluster NGC 4815 , 2014, 1403.7451.

[31]  E. Friel,et al.  RADIAL VELOCITIES OF THREE POORLY STUDIED CLUSTERS AND THE KINEMATICS OF OPEN CLUSTERS , 2014, 1409.6348.

[32]  E. Anderson,et al.  Two estimates of the distance to the Galactic Centre , 2013, 1309.2629.

[33]  B. Tang,et al.  INDIVIDUAL ALPHA ELEMENTS, C, N, AND Ba IN EARLY-TYPE GALAXIES , 2013, 1303.2603.

[34]  Sergey E. Koposov,et al.  The Gaia-ESO Survey: Reevaluation of the parameters of the open cluster Trumpler 20 using photometry and spectroscopy , 2013, 1312.3925.

[35]  C. Prieto,et al.  CALIBRATIONS OF ATMOSPHERIC PARAMETERS OBTAINED FROM THE FIRST YEAR OF SDSS-III APOGEE OBSERVATIONS , 2013, 1308.6617.

[36]  J. Hurley,et al.  Stars on the run: escaping from stellar clusters , 2013, 1307.1468.

[37]  E. Berger,et al.  AN r-PROCESS KILONOVA ASSOCIATED WITH THE SHORT-HARD GRB 130603B , 2013, 1306.3960.

[38]  I. Ilyin,et al.  Red clump stars of the Milky Way - laboratories of extra-mixing , 2013, 1304.4393.

[39]  M. Criscienzo,et al.  Yields of AGB and SAGB models with chemistry of low- and high-metallicity globular clusters , 2013, 1303.3912.

[40]  E. Friel,et al.  ZIRCONIUM, BARIUM, LANTHANUM, AND EUROPIUM ABUNDANCES IN OPEN CLUSTERS , 2013, 1303.4283.

[41]  L. Girardi,et al.  parsec: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code , 2012, 1208.4498.

[42]  B. Carney,et al.  ELEMENTAL ABUNDANCE RATIOS IN STARS OF THE OUTER GALACTIC DISK. IV. A NEW SAMPLE OF OPEN CLUSTERS , 2012, 1206.6931.

[43]  S. Ekstrom,et al.  Thermohaline instability and rotation-induced mixing - III. Grid of stellar models and asymptotic asteroseismic quantities from the pre-main sequence up to the AGB for low- and intermediate-mass stars of various metallicities , 2012, 1204.5193.

[44]  Sergio Ortolani,et al.  The Gaia-ESO Public Spectroscopic Survey , 2012 .

[45]  S. Randich,et al.  NEWS ON THE s PROCESS FROM YOUNG OPEN CLUSTERS , 2011, 1112.5290.

[46]  T. Kajino,et al.  THE r-PROCESS IN METAL-POOR STARS AND BLACK HOLE FORMATION , 2011, 1111.3985.

[47]  S. Randich,et al.  s-PROCESSING IN THE GALACTIC DISK. I. SUPER-SOLAR ABUNDANCES OF Y, Zr, La, AND Ce IN YOUNG OPEN CLUSTERS , 2011, 1105.2208.

[48]  K. Kratz,et al.  What are the astrophysical sites for the r-process and the production of heavy elements? , 2011 .

[49]  K. Janes,et al.  A QUANTITATIVE ANALYSIS OF DISTANT OPEN CLUSTERS , 2011 .

[50]  G. Carraro,et al.  Open clusters towards the Galactic centre: chemistry and dynamics - A VLT spectroscopic study of NGC 6192, NGC 6404, NGC 6583 , 2010, 1008.3158.

[51]  C. Charbonnel,et al.  Thermohaline instability and rotation-induced mixing I. Low- and intermediate-mass solar metallicity stars up to the end of the AGB , 2010, 1006.5359.

[52]  N. Langer,et al.  Thermohaline mixing in evolved low-mass stars , 2010, 1006.1354.

[53]  Roberto Gallino,et al.  THE WEAK s-PROCESS IN MASSIVE STARS AND ITS DEPENDENCE ON THE NEUTRON CAPTURE CROSS SECTIONS , 2010 .

[54]  J. Davenport,et al.  DEATH OF A CLUSTER: THE DESTRUCTION OF M67 AS SEEN BY THE SLOAN DIGITAL SKY SURVEY , 2010, 1001.1198.

[55]  Robert Barkhouser,et al.  The Apache Point Observatory Galactic Evolution Experiment (APOGEE) , 2007, Astronomical Telescopes + Instrumentation.

[56]  Italy.,et al.  ENHANCED PRODUCTION OF BARIUM IN LOW-MASS STARS: EVIDENCE FROM OPEN CLUSTERS , 2009, 0901.2743.

[57]  N. Mowlavi,et al.  CNONa and 12 C/ 13 C in giant stars of 10 open clusters ⋆ , 2008, 0810.1701.

[58]  G. Wasserburg,et al.  Can Extra Mixing in RGB and AGB Stars Be Attributed to Magnetic Mechanisms? , 2007, 0708.2949.

[59]  D. Pavani,et al.  Characterization of Open Cluster Remnants , 2007, 0704.1159.

[60]  J. Lattanzio,et al.  Compulsory Deep Mixing of 3He and CNO Isotopes in the Envelopes of Low-Mass Red Giants , 2007, 0706.2710.

[61]  C. Zahn.  Thermohaline mixing: a physical mechanism governing the photospheric composition of low-mass giants , 2007, astro-ph/0703302.

[62]  M. Asplund,et al.  The Solar Chemical Composition , 2004, astro-ph/0410214.

[63]  J. Lawler,et al.  The Rise of the s-Process in the Galaxy , 2004, astro-ph/0410396.

[64]  D. Clayton.  Handbook of Isotopes in the Cosmos , 2003 .

[65]  K. Lodders.  Solar System Abundances and Condensation Temperatures of the Elements , 2003 .

[66]  K. Freeman,et al.  The New Galaxy: Signatures of Its Formation , 2002, astro-ph/0208106.

[67]  V. Smith,et al.  Nucleosynthesis and Mixing on the Asymptotic Giant Branch. III. Predicted and Observed s-Process Abundances , 2001, astro-ph/0104424.

[68]  A. Chieffi,et al.  Evolution and Nucleosynthesis in Low-Mass Asymptotic Giant Branch Stars. II. Neutron Capture and the s-Process , 1998 .

[69]  M. Pinsonneault.  MIXING IN STARS , 1997 .

[70]  A. Boothroyd,et al.  The CNO Isotopes: Deep Circulation in Red Giants and First and Second Dredge-up , 1995, astro-ph/9512121.

[71]  R. Schutt.  Detection of Delta Scuti variables in NGC 6633 , 1995 .

[72]  S. Woosley,et al.  The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis , 1995 .

[73]  E. D. Friel,et al.  The Old Open Clusters of the Milky Way , 1995 .

[74]  H. Beer,et al.  Measurement of the Se-76(n-gamma) capture cross section and phenomenological s-process studies - The weak component , 1992 .

[75]  W. Arnett.  GALACTIC EVOLUTION AND NUCLEOSYNTHESIS. , 1971 .

[76]  I. Iben.  Stellar Evolution.VI. Evolution from the Main Sequence to the Red-Giant Branch for Stars of Mass 1 M_{sun}, 1.25 M_{sun}, and 1.5 M_{sun} , 1967 .