J/MNRAS/371/1405ivo://CDS.VizieR/J/MNRAS/371/1405doi:10.26093/cds/vizier.73711405CDSHartman J.D.Bersier D.Stanek K.Z.Beaulieu J.-P.Kaluzny J.,Marquette J.-B.Stetson P.B.Schwarzenberg-Czerny A.2024-07-03T20:13:56Z2007-07-28T17:08:54ZCDS support team

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

cds-question@unistra.frsurveysgalaxiesvariable-starsvisible-astronomysloan-photometryWe have conducted a variability survey of the Local Group galaxy M33, using g', r', and i' observations from 27 nights spanning 17 months, made with the MegaPrime/MegaCam instrument on the 3.6m CFHT telescope (Canada-France-Hawaii Telescope). We identify more than 36000 variable sources with g', r', i'<~24, out of approximately two million point sources in a 1-deg^2^ field of view. This increases the number of known variables in this galaxy by more than a factor of 20. In this paper, we provide a brief description of the data and a general overview of the variable star population which includes more than 1300 candidate variable blue and red supergiant stars, more than 2000 Cepheids, and more than 19000 long-period variable asymptotic giant branch and red giant branch stars.2006MNRAS.371.1405Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/371/1405CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.astro.livjm.ac.uk/~dfb/M33/ : M33 CFHT variability survey web pageJ/AJ/121/2032 : DIRECT variables in M33A field (Mochejska+, 2001)J/AJ/122/2477 : DIRECT variables in M33B field (Mochejska+, 2001)J/AJ/121/861 : DIRECT BVI photometry of central part of M33 (Macri+, 2001)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/371/1405https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/371/1405http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/371/1405https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/371/1405https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/371/1405http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/371/1405GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/371/1405/table24 (Catalogue of variable point sources in M33)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/371/1405/table24?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/371/1405/table24?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/371/1405/table24?GETtext/xml+votable180.050000true23.914083331.01422220.005555555555555556Cone search capability for table J/MNRAS/371/1405/table56 (Catalogue of variables in M33 that do not match to point sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/371/1405/table56?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/371/1405/table56?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/371/1405/table56?GETtext/xml+votable180.050000true23.908208331.14613890.0055555555555555566/2154-2155 2240-2241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/371/1405?format=asciiOpticaldefaultJ/MNRAS/371/1405/table24Catalogue of variable point sources in M33recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[HBS2006]Sequential number, [HBS2006] point source NNNNNN in Simbadmeta.recordintChipChip numbermeta.id;instrintNChipObject number in the Chipmeta.idintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)pos.eq.dec;meta.mainindexedg'mag?=99.999 g' magnitudemagphot.mag;em.opt.Bfloatnullablee_g'mag? rms uncertainty on g'magmagstat.error;phot.mag;em.opt.Bfloatnullabler'mag?=99.999 r' magnitudemagphot.mag;em.opt.Rfloatnullablee_r'mag? rms uncertainty on r'magmagstat.error;phot.mag;em.opt.Rfloatnullablei'mag?=99.999 i' magnitudemagphot.mag;em.opt.Ifloatnullablee_i'mag? rms uncertainty on i'magmagstat.error;phot.mag;em.opt.IfloatnullableVg'[0/1] Variability flag in g' band (G1)meta.code;src.varintVr'[0/1] Variability flag in r' band (G1)meta.code;src.varintVi'[0/1] Variability flag in i' band (G1)meta.code;src.varintPerPeriod founddtime.perioddoublenullableg'max?=99.999 Maximum g' magnitude valuemagphot.mag;em.opt.Bfloatnullableg'min?=99.999 Minimum g' magnitude valuemagphot.mag;em.opt.Bfloatnullableg'avg?=99.999 Flux-averaged g' magnitude valuemagphot.mag;em.opt.Bfloatnullablee_g'avg? rms uncertainty on g'avgmagstat.errorfloatnullabler'max?=99.999 Maximum r' magnitude valuemagphot.mag;em.opt.Rfloatnullabler'min?=99.999 Minimum r' magnitude valuemagphot.mag;em.opt.Rfloatnullabler'avg?=99.999 Flux-averaged r' magnitude valuemagphot.mag;em.opt.Rfloatnullablee_r'avg? rms uncertainty on r'avgmagstat.errorfloatnullablei'max?=99.999 Maximum i' magnitude valuemagphot.mag;em.opt.Ifloatnullablei'min?=99.999 Minimum i' magnitude valuemagphot.mag;em.opt.Ifloatnullablei'avg?=99.999 Flux-averaged i' magnitude valuemagphot.mag;em.opt.Ifloatnullablee_i'avg? rms uncertainty on i'avgmagstat.errorfloatnullableLGGSMassey et al., 2006, Cat. <J/AJ/131/2478> designation, JHHMMSS.ss+DDMMSS.smeta.idcharVmag? V magnitude, from LGGSmagphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableB-V? B-V colour index, from LGGSmagphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? rms uncertainty on B-Vmagstat.error;phot.color;em.opt.BfloatnullableV-R? V-R colour index, from LGGSmagphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R? rms uncertainty on V-Rmagstat.error;phot.color;em.opt.VfloatnullableD33-1Direct name, D33Jhhmmss.s+ddmmss.s, Mochejska et al. (2001, cat. J/AJ/121/2032)meta.idcharD33-2Direct name, D33Jhhmmss.s+ddmmss.s, Mochejska et al. (2001, Cat. J/AJ/122/2477)meta.idcharD33-3Direct name, D33Jhhmmss.s+ddmmss.s, Macri et al. (2001, Cat. J/AJ/121/861)meta.idcharLCPlot the Light Curvesmeta.ref.urlcharJ/MNRAS/371/1405/table56Catalogue of variables in M33 that do not match to point sourcesg'chi2? Chi^2^ per degree of freedom about the mean of the differential flux light curve in g' filterstat.meandoublenullabler'avg? Flux-averaged of the r' differential flux light curve (1)phot.mag;em.opt.Rdoublenullabler'sig? standard deviation of the differential flux light curve in r' filterstat.errordoublenullabler'chi2? Chi^2^ per degree of freedom about the mean of the differential flux light curve in r' filterstat.meandoublenullablei'avg? Flux-averaged of the i' differential flux light curve (1)phot.mag;em.opt.Idoublenullablei'sig? standard deviation of the differential flux light curve in i' filterstat.errordoublenullablei'chi2? Chi^2^ per degree of freedom about the mean of the differential flux light curve in i' filterstat.meandoublenullableLCPlot the Light Curvesmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[HBS2006]Sequential number, [HBS2006] not point source NNNNNNmeta.recordintChipChip numbermeta.id;instrintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)pos.eq.dec;meta.mainindexedVg'[0/1] Variability flag in g' band (G1)meta.code;src.varintVr'[0/1] Variability flag in r' band (G1)meta.code;src.varintVi'[0/1] Variability flag in i' band (G1)meta.code;src.varintg'avg? Flux-averaged of the g' differential flux light curve (1)phot.mag;em.opt.Bdoublenullableg'sig? standard deviation of the differential flux light curve in g' filterstat.errordoublenullable