J/MNRAS/384/1178ivo://CDS.VizieR/J/MNRAS/384/1178doi:10.26093/cds/vizier.73841178CDSBilir S.Ak S.Karaali S.Cabrera-Lavers A.Chonis T.S.Gaskell C.M.2024-07-06T20:15:26Z2008-11-20T22:08:29ZCDS support team

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

cds-question@unistra.frsurveysinfrared-photometryWe present colour transformations for the conversion of the 2MASS photometric system to the Johnson-Cousins UBVRI system and further into the SDSS ugriz system. We have taken SDSS gri magnitudes of stars measured with the 2.5-m telescope from SDSS Data Release 5 (DR5), and BVRI and JHKs magnitudes from Stetson's catalogue (available at http://www2.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/STETSON/archive/ ) and Cutri et al. (2MASS, 2003, Cat. II/246), respectively. We matched thousands of stars in the three photometric systems by their coordinates and obtained a homogeneous sample of 825 stars by the following constraints, which are not used in previous transformations: 1) the data are de-reddened, 2) giants are omitted, and 3) the sample stars selected are of the highest quality. We give metallicity, population type, and transformations dependent on two colours. The transformations provide absolute magnitude and distance determinations which can be used in space density evaluations at short distances where some or all of the SDSS ugriz magnitudes are saturated. The combination of these densities with those evaluated at larger distances using SDSS ugriz photometry will supply accurate Galactic model parameters, particularly the local space densities for each population.2008MNRAS.384.1178Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/384/1178CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)http://sdss.org : SDSS Home Pagehttp://www2.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/STETSON/archive/ :https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/384/1178https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/384/1178http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/384/1178https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/384/1178https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/384/1178http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/384/1178GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/384/1178/table1 (Johnson-Cousins, SDSS and 2MASS magnitudes of the sample stars (825 total stars))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/384/1178/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/384/1178/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/384/1178/table1?GETtext/xml+votable180.050000true228.99804-0.149610.0055555555555555566/5067 6149 6389 7606 9666 10183 10336 10856 11026-11027 12405 12407 18028 19033 19091 19095 19138 25944 25946 26174-26175 26260-26261 27045 27235 27238 27324 27574 27580 27728 28067 31380-31381 31396 31398 315951.398457827073138e-19 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/384/1178?format=asciiInfrareddefaultJ/MNRAS/384/1178/table1Johnson-Cousins, SDSS and 2MASS magnitudes of the sample stars (825 total stars)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latVmag? Johnson V-apparent magnitudemagphot.mag;em.opt.VfloatnullableB-V? Johnson B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableR-I? Johnson R-I colour indexmagphot.color;em.opt.R;em.opt.IfloatnullablegmagSDSS g-apparent magnitudemagphot.mag;em.opt.Bfloatu-gSDSS u-g colour indexmagphot.color;em.opt.U;em.opt.Bfloatg-rSDSS g-r colour indexmagphot.color;em.opt.B;em.opt.Rfloatr-iSDSS r-i colour indexmagphot.color;em.opt.R;em.opt.IfloatJmag2MASS J-apparent magnitudemagphot.mag;em.IR.JfloatJ-H2MASS J-H colour indexmagphot.color;em.IR.J;em.IR.HfloatH-Ks2MASS H-Ks colour indexmagphot.color;em.IR.H;em.IR.KfloatE(B-V)Reduced Ed(B-V) colour excessmagphot.color.excessfloat2MASSDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSDSSDisplay the SDSS data (Adelman-McCarthy et al. 2007, Cat. II/282)meta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed