J/MNRAS/429/126ivo://CDS.VizieR/J/MNRAS/429/126doi:10.26093/cds/vizier.74290126CDSRuchti G.R.Bergemann M.Serenelli A.Casagrande L.Lind K.2024-07-20T20:13:46Z2014-04-14T10:08:41ZCDS support team

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

cds-question@unistra.frlate-type-starseffective-temperatureWe present a comprehensive analysis of different techniques available for the spectroscopic analysis of FGK stars and provide a recommended methodology which efficiently estimates accurate stellar atmospheric parameters for large samples of stars. Our analysis includes a simultaneous equivalent width analysis of FeI and FeII spectral lines, and for the first time, utilizes on-the-fly non-local thermodynamic equilibrium (NLTE) corrections of individual FeI lines. We further investigate several temperature scales, finding that estimates from Balmer line measurements provide the most accurate effective temperatures at all metallicities. We apply our analysis to a large sample of both dwarf and giant stars selected from the Radial Velocity Experiment (RAVE) survey. We then show that the difference between parameters determined by our method and that by the standard 1D LTE excitation-ionization balance of Fe reveals substantial systematic biases: up to 400K in effective temperature, 1.0dex in surface gravity and 0.4dex in metallicity for stars with [Fe/H]~-2.5. This has large implications for the study of the stellar populations in the Milky Way.2013MNRAS.429..126Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/429/126CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/469/783 : Code for automatic determination of EW (ARES) (Sousa+, 2007)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/AJ/120/1841 : Abundances & kinematics of halo and disk stars (Fulbright 2000)J/ApJ/737/9 : Thick disk stars RAVE spectroscopic data (Ruchti+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/429/126https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/429/126http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/429/126https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/429/126https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/429/126http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/429/126GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/429/126/table1 (Atmospheric stellar parameter data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/429/126/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/429/126/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/429/126/table1?GETtext/xml+votable180.050000true5.87787-16.528670.0055555555555555566/16504 16586 16607 16764 16819 16828 16890 16907 16929 17033 17091 17127 17134 17234 17517 17556 17595 17618 17698 18606 18683 18952 18973 20527 20538 20623 20635 20882 21126 21202 21228-21229 21241 22564 23043 23304 24602 24607 24618 24636 24644 24663 24668 24675 24717 24750 24887 24986 24994 25061 25074 25098 25126 25139 25158 25167 25197 25207 25297 25318 25327 25350 25394 25400 25405 25520 25595 25608 25614 25618 25622 25624 25635 25652 25696 25767 25786 25857 25873 25893 25938 25990 26145 26168 26241 26669 26720 26722 26725 26728 26730 26739 26764 26767 26827 26925 26927 27016 27182 30761 30778 30857 30870 30923 30962 31117 31249 32894 33030 33051 33121 33142 33207 33366 33446 33521 33523 33720 33724 33750 33877 33885 34141 34260 34276 34370 34427 34478 34493 34570 34588 34610 34908 34935 34939 35084 35090 35112 35234 35267 35288 35359 35381 35649 35760 35857 35927 35947 36002 36082 36105 36172 36263 36316 36336 36446 36467 36486 36501 36710 36728 36783 36842 36995 37543 37551 38218 38303 38336 38639 38683 38772 38775 38779-38780 38851 39084 39188 39443 39490 39653 39707 39817 39847 39866 40046 40133 40270 40278 40313 40337 40498 40911 41029 43248 43307 43487 43508 43577 43619 43629 43663 43862 43905 43950 43976 43992 44002 44006 44208 44260 44279 44458 44478 44552 44641 44661 44701 44754 44780 44817 44825 44830 44841 44847 44851-44852 44890 44901 44906 44923 44960 45019 45037 45097 45185 45199 45216 45408 45595 45622 45640 45658 45714 45748 45764 45786 45804 45807 45857 45954 46023 46167 46203 46250 46273 46324 46370 46418 46633 46666 46696 46706 46806 46942 46987 47094 47168 47191 47201 47223 47226 47325 47373 47379 47387 47400 47447 47544 47564 47589 47711 47895 47940 47954 47967 48087 48163 48171 48186 48246 48256 48272 48281 48358 48436 48588 48609 48641 48648 48672 48676-48677 48694 48749-48752 48861 49093 49103 49124https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/429/126?format=asciiOpticaldefaultJ/MNRAS/429/126/table1Atmospheric stellar parameter datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name, as in Ruchti et al. 2011, Cat. J/ApJ/737/9meta.id;meta.maincharTeff1LTE-Fe effective temperature (1)Kphys.temperature.effectiveinte_Teff1rms uncertainty on TeffL (1)Kstat.errorintlogg1LTE-Fe surface gravity (error +/-0.1) (1)log(cm.s**-2)stat.error;phys.gravityfloat[Fe/H]1LTE-Fe metallicity (error +/-0.1) (1)log(Sun)stat.error;phys.abund.Zfloatv1LTE-Fe microturbulence velocity (1)km/sphys.veloc.microTurbfloatE(B-V)? Redenningmagphot.color.excessfloatnullableTIRFM? IRFM temperature (2)Kphys.temperature.effectiveintnullablee_TIRFM? rms uncertainty on TIRFM (2)Kstat.errorintnullableTR11Temperature from Ruchti et al. 2011, Cat. J/ApJ/737/9Kphys.temperature.effectiveintTBal? Temperature estimated from Balmer linesKphys.temperature.effectiveintnullablee_TBal? rms uncertainty on TBalKstat.errorintnullableTeff2NLTE-Opt effective temperature (1)Kphys.temperature.effectiveinte_Teff2rms uncertainty on TeffN (1)Kstat.errorintlogg2NLTE-Opt surface gravity (error +/-0.1) (1)log(cm.s**-2)stat.error;phys.gravityfloat[Fe/H]2NLTE-Opt metallicity (error +/-0.1) (1)log(Sun)stat.error;phys.abund.Zfloatv2NLTE-Opt microturbulence velocity (1)km/sphys.veloc.microTurbfloat_RAPosition, from RAVE name or Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition, from RAVE name or Simbad (declination part)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idchar