J/ApJ/761/16ivo://CDS.VizieR/J/ApJ/761/16doi:10.26093/cds/vizier.17610016CDSCasagrande L.Ramirez I.Melendez J.Asplund M.2014-09-13T20:25:37Z2014-09-01T14:10:59ZCDS support team

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

cds-question@unistra.frthe-suninfrared-photometrySolar infrared colors provide powerful constraints on the stellar effective temperature scale, but they must be measured with both accuracy and precision in order to do so. We fulfill this requirement by using line-depth ratios to derive in a model-independent way the infrared colors of the Sun, and we use the latter to test the zero point of the Casagrande et al. (Cat. J/A+A/512/A54) effective temperature scale, confirming its accuracy. Solar colors in the widely used Two Micron All Sky Survey (2MASS) JHK_s_ and WISE W1-4 systems are provided: (V-J)_{sun}_=1.198, (V-H)_{sun}_=1.484, (V-K_s_)_{sun}_=1.560, (J-H)_{sun}_=0.286, (J-K_s_)_{sun}_=0.362, (H-K_s_)_{sun}_=0.076, (V-W1)_{sun}_=1.608, (V-W2)_{sun}_=1.563, (V-W3)_{sun}_=1.552, and (V-W4)_{sun}_=1.604. A cross-check of the effective temperatures derived implementing 2MASS or WISE magnitudes in the infrared flux method confirms that the absolute calibration of the two systems agrees within the errors, possibly suggesting a 1% offset between the two, thus validating extant near- and mid-infrared absolute calibrations. While 2MASS magnitudes are usually well suited to derive T_eff_, we find that a number of bright, solar-like stars exhibit anomalous WISE colors. In most cases, this effect is spurious and can be attributed to lower-quality measurements, although for a couple of objects (3%+/-2% of the total sample) it might be real, and may hint at the presence of warm/hot debris disks.2012ApJ...761...16Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/761/16CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/757/112 : Stellar diameters. II. K and M-stars (Boyajian+, 2012)J/ApJ/746/101 : Diameters and temperatures of AFG stars (Boyajian+, 2012)J/MNRAS/426/91 : Kepler stars with infrared excess (Kennedy+, 2012)J/MNRAS/417/2230 : BVRI+SDSS+2MASS & WISE phot. of 289 stars (Bilir+, 2011)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/AN/328/938 : Teff/line-depth ratio for ELODIE spectra (Biazzo+, 2007)J/MNRAS/373/13 : Lower MS stars fundamental param. (Casagrande+, 2006)J/A+A/411/559 : Effective temperature for 181 F-K dwarfs (Kovtyukh+, 2003)J/A+A/333/231 : O-M stars model atmospheres (Bessell+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/761/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/761/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/761/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/761/16https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/761/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/761/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/ApJ/761/16/table1*(V-Ks)_sun_ color inferred from line-depth ratio (LDR) measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlam1[5490/6747] Wavelength {lambda}_1_ of first line in pair ({AA})0.1nmem.wldoubleS1First line species identifierphys.atmol.ionStagecharlam2[5517/6758] Wavelength {lambda}_1_ of second line in pair ({AA})0.1nmem.wlfloatS2Second line species identifierphys.atmol.ionStagecharN*[29/85] Number of stars used for fitmagmeta.numberintsigFitStandard deviation of fit ({sigma}_fit_)magstat.stdev;phot.magfloatV-Ks[1.542/1.592] The solar (V-Ks) color indexmagphot.color;em.opt.V;em.IR.Kfloate_V-Ks[0.003/0.08] Standard deviation of color (1)magstat.error;phot.color;em.opt.Vfloat