J/AJ/140/1475ivo://CDS.VizieR/J/AJ/140/1475doi:10.26093/cds/vizier.51401475CDSPietrzynski G.Gieren W.Hamuy M.Pignata G.Soszynski I.Udalski A.,Walker A.Fouque P.Bresolin F.Kudritzki R.-P.Garcia-Varela A.,Szewczyk O.Szymanski M.Kubiak M.Wyrzykowski L.2018-01-04T08:23:04Z2012-08-06T20:06:25ZCDS support team

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

cds-question@unistra.frgalaxiesvariable-starsinfrared-photometryvisible-astronomyphotometryFor the first time, we have detected Cepheid variables in the Sculptor Group spiral galaxy NGC 7793. From wide-field images obtained in the optical V and I bands on 56 nights in 2003-2005, we have discovered 17 long-period (24-62 days) Cepheids whose periods and mean magnitudes define tight period-luminosity relations. We use the (V-I) Wesenheit index to determine a reddening-free true distance modulus to NGC 7793 of 27.68+/-0.05mag (internal error) +/-0.08mag (systematic error).2010AJ....140.1475Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/140/1475CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/440/783 : OB associations in NGC 7793 (Pietrzynski+, 2005)J/AJ/135/1993 : JHK magnitudes of Sculptor dSph RR Lyrae (Pietrzynski+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/140/1475https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/140/1475http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/140/1475https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/140/1475https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/140/1475http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/140/1475GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/140/1475/table2 (Cepheids in NGC 7793)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/140/1475/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/140/1475/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/140/1475/table2?GETtext/xml+votable180.050000true359.4870417-32.57113890.0055555555555555566/16441https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/140/1475?format=asciiOpticalInfrareddefaultJ/AJ/140/1475/table2Cepheids in NGC 7793recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name, cepNNN ([PGH2010] cepNNN in Simbad)meta.id;meta.maincharprimaryLCLight curvesmeta.ref.urlcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainPerPerioddtime.periodfloatT0Epoch of minimum (T0-2450000)dtime.epochdouble<Vmag>Mean V magnitudemagphot.mag;em.opt.Vfloat<Imag>? Mean I magnitudemagphot.mag;em.opt.Ifloatnullable<WImag>? Mean Wesenheit WI magnitude, defined as WI=I-1.55(V-I)magphot.color.reddFreefloatnullableSimbadSimbad column added by the CDSmeta.refcharJ/AJ/140/1475/table1Individual V and I ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name, cepNNNmeta.id;meta.maincharFilter[VI] Filter used in observationinstr.setup;obscharHJDHeliocentric Julian Datedtime.epochdoublemagObserved magnitude in Filtermagphot.magfloate_magUncertainty in magmagstat.error;phot.magfloat