-2.6<=[Fe/H]<=0.2 F and G dwarfs. II. Abundances

-2.6<=[Fe/H]<=0.2 F and G dwarfs. II. AbundancesJ/ApJ/833/225ivo://CDS.VizieR/J/ApJ/833/225doi:10.26093/cds/vizier.18330225CDSZhao G.Mashonkina L.Yan H.L.Alexeeva S.Kobayashi C.Pakhomov Y.,Shi J.R.Sitnova T.Tan K.F.Zhang H.W.Zhang J.B.Zhou Z.M.,Bolte M.Chen Y.Q.Li X.Liu F.Zhai M.2017-07-18T15:21:38Z2017-05-29T08:17:55ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frdwarf-starschemical-abundancesspectroscopyFor the first time, we present an extensive study of stars with individual non-LTE (NLTE) abundances for 17 chemical elements from Li to Eu in a sample of stars uniformly distributed over the -2.62<=[Fe/H]<=+0.24 metallicity range that is suitable for the Galactic chemical evolution research. The star sample has been kinematically selected to trace the Galactic thin and thick disks and halo. We find new results and improve earlier ones as follows: (i) the element-to-iron ratios for Mg, Si, Ca, and Ti form a metal-poor (MP) plateau at a similar height of 0.3 dex, and the knee occurs at common [Fe/H]~-0.8. The knee at the same metallicity is observed for [O/Fe], and the MP plateau is formed at [O/Fe]=0.61. (ii) The upward trend of [C/O] with decreasing metallicity exists at [Fe/H]<-1.2, supporting the earlier finding of Akerman et al. (iii) An underabundance of Na relative to Mg in the [Fe/H]<-1 stars is nearly constant, with the mean [Na/Mg]~-0.5. (iv) The K/Sc, Ca/Sc, and Ti/Sc ratios form well-defined trends, suggesting a common site of the K-Ti production. (v) Sr follows the Fe abundance down to [Fe/H]~-2.5, while Zr is enhanced in MP stars. (vi) The comparisons of our results with some widely used Galactic evolution models are given. The use of the NLTE element abundances gives increased credit to the interpretation of the data in the context of the chemical evolution of the Galaxy.2016ApJ...833..225Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/833/225CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/456/1221 : FGK dwarfs atmospheric parameters (Ryabchikova+, 2016)J/ApJ/817/53 : Fe abundance analysis in HD84937 (Sneden+, 2016)J/A+A/585/A102 : Copper abundances in solar neighborhood stars (Yan+, 2016)J/A+A/584/A86 : Abundance analysis of HD 140283 (Siqueira-Mello+, 2015)J/AZh/92/834 : A list of tantalum lines (Pakhomov, 2015)J/A+A/572/A103 : Inelastic silicon-hydrogen collision data (Belyaev+, 2014)J/A+A/562/A71 : Abundances of solar neighbourhood dwarfs (Bensby+, 2014)J/ApJS/208/27 : Sun and HD 84937 TiII log(gf) and abundances (Wood+, 2013)J/AJ/146/97 : Ti lines for the Lick hallow-cathode lamp (Pakhomov+, 2013)J/ApJ/771/67 : Abundances for 97 metal-poor stars. II. (Ishigaki+, 2013)J/A+A/552/A128 : Abundances of neutron-capture elements (Mishenina+, 2013J/ApJ/756/46 : Lithium abundances in HIP stars (Ramirez+, 2012)J/A+A/545/A32 : Chemical abundances of 1111 FGK stars (Adibekyan+, 2012)J/A+A/541/A143 : NLTE Corrections of the Ca lines (Spite+, 2012)J/MNRAS/403/1413 : Updated stellar yields from AGB models (Karakas, 2010)J/A+A/511/L10 : Abundances and space velocities of 94 stars (Nissen+, 2010)J/A+A/503/541 : Li in late-type stars non-LTE calculations (Lind+, 2009)J/AZh/84/997 : Abundances of Sr, Y, Zr, Ce and Ba (Mashonkina+, 2007)J/A+A/469/1203 : IRON project LXIV (Melendez+, 2007)J/A+A/442/961 : Li content of the Galactic Halo stars (Charbonnel+, 2005)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/A+A/433/185 : Abundance analysis of 102 F and G dwarfs (Bensby+, 2005)J/A+A/420/183 : Spectro. survey in solar neighborhood (Allende Prieto+ 2004)J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004)J/MNRAS/340/304 : [X/Fe] of Galactic disc F and G dwarfs (Reddy+, 2003)J/A+AS/142/467 : Broadening of metallic lines by H collisions (Barklem+ 2000)J/A+A/326/751 : Chemical composition of halo and disk stars (Nissen+, 1997)J/A+A/275/101 : Chemical evol. of the galactic disk I. (Edvardsson+ 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/833/225https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/833/225http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/833/225https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/833/225https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/833/225http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/833/225GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/833/225/stars (List of objects from table 3; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/833/225/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/833/225/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/833/225/stars?GETtext/xml+votable180.050000true47.266749449.61327780.0055555555555555566/154 1341 3102 3494 4376 4854 5195 5484 5718 5895 6066 6159 6256 6308 6348 6539 6792 6941 7141 8210 9753 9835 10375 10812 11177 19347 21696 22120 22157 22180 22527 22594 22654 23070 23096 23190 24924 25385 25444 25554 26289 26975 27006 28336 28664 31279 40442 40567 40716 44542 44910https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/833/225?format=asciiOpticaldefaultJ/ApJ/833/225/starsList of objects from table 3; table added by CDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject, Simbad namemeta.id;meta.maincharprimaryTeff[4810/6600] Object effective temperature, derived (1)Kphys.temperature.effectiveintlogg[3/4.8] Object surface gravity, derived (1)cm.s**-2phys.gravityfloat[Fe/H][-2.7/0.3] Object metallicity, derived (1)log(Sun)phys.abund.Zfloatxi[0.6/2] Microturbulence velocity, derived (1)km/sphys.veloc.microTurbfloatPopObject Galactic population (Halo, Thick disk or Thin disk)src.classcharADisplay the 20 abundance measurements for this starmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main

J/ApJ/833/225/table3Summary of the obtained stellar abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject, Simbad namemeta.id;meta.maincharTeff[4810/6600] Object effective temperature, derived (1)Kphys.temperature.effectiveintlogg[3/4.8] Object surface gravity, derived (1)cm.s**-2phys.gravityfloat[Fe/H][-2.7/0.3] Object metallicity, derived (1)log(Sun)phys.abund.Zfloatxi[0.6/2] Microturbulence velocity, derived (1)km/sphys.veloc.microTurbfloatPopObject Galactic population (Halo, Thick disk or Thin disk)src.classcharZ[3/63]? Atomic numbermeta.idintnullableSpeciesChemical species investigatedmeta.notecharN[0/29]? Number of lines fitmeta.numberintnullable[X/H]LTE[-3.6/2.8]? Abundance, relative to hydrogen, LTE caselog(Sun)phys.abundfloatnullablee_[X/H]LTE[0/0.3]? Uncertainty in [X/H]LTElog(Sun)stat.error;phys.abundfloatnullable[X/Fe]LTE[-1.1/0.7]? Abundance, relative to iron, LTE caselog(Sun)phys.abundfloatnullable[X/H]NLTE[-3.3/2.7]? Abundance, relative to hydrogen, NLTE caselog(Sun)phys.abundfloatnullablee_[X/H]NLTE[0/0.3]? Uncertainty in [X/H]NLTElog(Sun)stat.error;phys.abundfloatnullable[X/Fe]NLTE[-0.8/0.7]? Abundance, relative to iron, NLTE caselog(Sun)phys.abundfloatnullable