J/A+A/512/A13ivo://CDS.VizieR/J/A+A/512/A13doi:10.26093/cds/vizier.35120013CDSSousa S.G.AlapiniA.Israelian G.Santos N.C.2010-05-30T23:07:57Z2010-04-26T13:50:10ZCDS support team

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

cds-question@unistra.frspectroscopyeffective-temperatureline-intensitiesThe precise determination of the stellar effective temperature of solar type stars is of extreme importance for Astrophysics. We present an effective temperature calibration for FGK dwarf stars using line equivalent width ratios of spectral absorption lines. The ratios of spectral line equivalent width can be very sensitive to effective temperature variations for a well chosen combination of lines. We use the automatic code ARES to measure the equivalent width of several spectral lines, and use these to calibrate with the precise effective temperature derived from spectroscopy presented in a previous work.2010A&A...512A..13Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/512/A13CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/458/873 : Stellar parameters of metal-rich solar-type stars (Sousa+ 2007)J/A+A/469/783 : Code for automatic determination of EW (ARES) (Sousa+, 2007)J/A+A/487/373 : Spectroscopic parameters of 451 HARPS-GTO stars (Sousa+, 2008)J/A+A/497/563 : Chemical abundances of 451 stars (Neves+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/512/A13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/512/A13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/512/A13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/512/A13https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/512/A13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/512/A13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/512/A13/table2EW line-ratio calibration coefficientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnfID number of final line ratiosmeta.idintniID number of the initial list of line ratiosmeta.idintstddevstandard deviation in each calibrationstat.stdevintNstarsNumber of stars used in each ratio calibrationmeta.numberintlambda1Wavelength of first line0.1nmem.wl;spect.linefloatlambda2Wavelength of second line0.1nmem.wl;spect.linefloatEl1Element of first linephys.atmol.elementcharEl2Element of second linephys.atmol.elementcharc01st coefficient of the fit c0+c1x+c2x^2^+c3x^3^phot.color.reddFreedoublec12nd coefficient of the fit c0+c1x+c2x^2^+c3x^3^stat.fit.param;meta.modelleddoublec23rd coefficient of the fit c0+c1x+c2x^2^+c3x^3^stat.fit.param;meta.modelleddoublec34th coefficient of the fit c0+c1x+c2x^2^+c3x^3^stat.fit.param;meta.modelleddoubleTeff0Lower limit in Teff for each calibrationKphys.temperature.effective;stat.minintTeff1Upper limit in Teff for each calibrationKphys.temperature.effective;stat.maxintT[1/6] Type of fit used (1)meta.id;stat.fitintJ/A+A/512/A13/table1Line listElElementphys.atmol.elementcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaCentral wavelength0.1nmem.wl.centralfloatEPExcitation potentialeVphys.atmol.excitationfloatloggfOscilator strengthphys.atmol.collStrengthfloat