J/MNRAS/411/263ivo://CDS.VizieR/J/MNRAS/411/263doi:10.26093/cds/vizier.74110263CDSJavadi A.van Loon J.T.Mirtorabi M.T.2024-07-13T20:14:35Z2011-04-07T13:57:33ZCDS support team

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

cds-question@unistra.frvariable-starsgalaxiesinfrared-photometryWe have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M 33 (Triangulum). The main aim was to identify stars in the very final stage of their evolution, and for which the luminosity is more directly related to the birth mass than the more numerous less-evolved giant stars that continue to increase in luminosity. The most extensive dataset was obtained in the K-band with the UIST instrument for the central 4'x4' (1kpc^2^) --- this contains the nuclear star cluster and inner disc. These data, taken during the period 2003-2007, were complemented by J- and H-band images. Photometry was obtained for 18,398 stars in this region; of these, 812 stars were found to be variable, most of which are Asymptotic Giant Branch (AGB) stars. Our data were matched to optical catalogues of variable stars and carbon stars, and to mid-infrared photometry from the Spitzer Space Telescope. In this first of a series of papers, we present the methodology of the variability survey and the photometric catalogue, which is made publicly available at the Centre de Donnees astronomiques de Strasbourg (CDS), and discuss the properties of the variable stars. Most dusty AGB stars had not been previously identified in optical variability surveys, and our survey is also more complete for these types of stars than the Spitzer survey.2011MNRAS.411..263Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/411/263CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/373/438 : X-ray view of M33 after ROSAT (Haberl+, 2001)J/A+A/426/11 : XMM-Newton survey of M33 (Pietsch+, 2004)J/A+A/448/1247 : XMM-Newton survey of M33 (Misanovic+, 2006)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/A+A/472/785 : Radio continuum survey of M33 (Tabatabaei+, 2007)J/A+A/476/1161 : Spitzer photometry of M33 (Verley+, 2007)J/ApJ/664/850 : Spitzer observations of stars in M33 (McQuinn+, 2007)J/ApJS/174/366 : Chandra ACIS survey of M33 (ChaSeM33) (Plucinsky+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/411/263https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/411/263http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/411/263https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/411/263https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/411/263http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/411/263GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/411/263/m33p1 (Photometric catalog. Part I: stellar mean properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/411/263/m33p1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/411/263/m33p1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/411/263/m33p1?GETtext/xml+votable180.050000true23.425137530.658450.0055555555555555566/21558.331560217196075e-20 1.69086262769595e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/411/263?format=asciiInfrareddefaultJ/MNRAS/411/263/m33p1Photometric catalog. Part I: stellar mean propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[3/19600] Star numbermeta.id;meta.mainintprimaryPlotShow the JHK light curvesmeta.ref.urlcharJmag? Mean J-band magnitude (UKIRT J[98])magphot.mag;em.IR.Jfloatnullablee_Jmag? Error in Jmagmagstat.error;phot.mag;em.IR.Jfloatnullableo_JmagNumber of J-band measurementsmeta.numberintHmag? Mean H-band magnitude (UKIRT H[98])magphot.mag;em.IR.Hfloatnullablee_Hmag? Error in Hmagmagstat.error;phot.mag;em.IR.Hfloatnullableo_HmagNumber of H-band measurementsmeta.numberintKmagMean K-band magnitude (UKIRT K[98])magphot.mag;em.IR.Kfloate_KmagError in Kmagmagstat.error;phot.mag;em.IR.Kfloato_KmagNumber of K-band measurementsmeta.numberintchiMean {chi} value from DAOphotstat.fit.chi2floatsharpMean sharpness value from DAOphot (G1)stat.value;stat.meanfloatJvarVariability index J (2)src.var.indexfloatKvar[0/1] Kurtosis index K (2)src.var.indexfloatLvarVariability index L (2)src.var.indexfloatKamp? Estimated K-band amplitudemagphot.mag;em.IR.KfloatnullableRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainJ/MNRAS/411/263/m33p2Photometric catalog. Part II: multi-epoch datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[3/19600] Star numbermeta.id;meta.mainintEpochEpoch (HJD-2450000)dtime.epochdoubleF[JHK] Filter (J, H or K)instr.bandpasscharmagMagnitude observed in filter Fmagphot.magfloate_magError in magnitudemagstat.error;phot.magfloatchi{chi} value from DAOphotstat.fit.chi2floatsharpSharpness value from DAOphot (G1)src.class.starGalaxyfloat