J/AcA/68/89ivo://CDS.VizieR/J/AcA/68/89doi:10.26093/cds/vizier.120680089CDSSoszynski I.Udalski A.Szymanski M.K.Wyrzykowski L.Ulaczyk K.,Poleski R.Pietrukowicz P.Kozlowski S.Skowron D.Skowron J.Mroz P.,Rybicki K.Iwanek P.2025-09-25T20:16:31Z2019-09-30T14:58:17ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsapparent-magnitudeWe present a nearly complete collection of type II Cepheids in the Magellanic System. The sample consists of 338 objects: 285 and 53 variables in the Large and Small Magellanic Clouds, respectively. Based on the pulsation periods and light-curve morphology, we classified 118 of our type II Cepheids as BL Her, 120 as W Vir, 34 as peculiar W Vir, and 66 as RV Tau stars. For all objects, we publish time-series VI photometry obtained during the OGLE-IV survey, from 2010 to the end of 2017. We present the most interesting individual objects in our collection: 16 type II Cepheids showing additional eclipsing or ellipsoidal variability, two RV Tau variables more than 2.5mag fainter than other stars of this type in the LMC, an RVb star that drastically decreased the amplitude of the long-period modulation, type II Cepheids exhibiting significant amplitude and period changes, and an RV Tau star which undergoes interchanges of deep and shallow minima. We show that peculiar W Vir stars have markedly different spatial distribution than other subclasses of type II Cepheids, which indicates different evolutionary histories of these objects.2018AcA....68...89Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/68/89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999)J/AcA/58/163 : VI light curves of LMC classical Cepheids (Soszynski+, 2008)J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008)J/AcA/58/313 : LMC Cepheids in OGLE and MACHO data (Poleski+, 2008)J/AcA/60/17 : VI light curves of SMC classical Cepheids (Soszynski+, 2010)J/AcA/60/91 : VI light curves of SMC type II Cepheids (Soszynski+, 2010)J/AcA/65/233 : OGLE Magellanic Clouds anomalous Cepheids (Soszynski+, 2015)J/AcA/65/297 : OGLE4 LMC and SMC Cepheids (Soszynski+, 2015)J/ApJ/824/74 : OGLE LC classification of MC Cepheids (Garcia-Varela+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/68/89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/68/89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/68/89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/68/89https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/68/89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/68/89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/68/89/smc_t2cep (Type II Cepheids in the SMC (tables ident and t2cep of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/68/89/smc_t2cep?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/68/89/smc_t2cep?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/68/89/smc_t2cep?GETtext/xml+votable180.050000true7.5098333-73.81861110.005555555555555556Cone search capability for table J/AcA/68/89/lmc_t2cep (Type II Cepheids in the SMC (tables ident and t2cep of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/68/89/lmc_t2cep?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/68/89/lmc_t2cep?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/68/89/lmc_t2cep?GETtext/xml+votable180.050000true69.563875-68.25888890.0055555555555555565/8262-8263 8269 8273-8275 8277-8278 8280 8329 6/32842 32860 32954 33026-33027 33031 33033-33036 33039 33041-33043 33045-33047 33059 33061 33063 33067 33073-33075 33081 33084-33085 33088 33090-33091 33105-33106 33116-33118 33124 33126 33128 33137 33141 33144-33145 33169 33224 33285-33287 33293-33296 33304-33306 33312-33313 33324-33325 33328 33330-33331 33796 33800-33801 33803 33810 33825 37382 37408 37410-37411 37417 37419 37504 37506 37513 37518 37530 37538-37539 37543 37545 38914https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/68/89?format=asciidefaultJ/AcA/68/89/smc_t2cepType II Cepheids in the SMC (tables ident and t2cep of the paper)LCPlot the light curvemeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNote[R] R indicates a remarkmeta.notecharStarStar name, OGLE-SMC-T2CEP-NN (No 1-54) or OGLE-LMC-T2CEP-NNN (No 1-294)meta.id;meta.mainchar<Imag>Intensity mean I-band magnitudemagphot.mag;em.opt.Ifloat<Vmag>? Intensity mean V-band magnitudemagphot.mag;em.opt.VfloatnullablePerPerioddtime.perioddoublee_PerUncertainty of perioddstat.errordoubleT0Time of maximum brightness (HJD-2450000)dtime.epochdoubleIAmpI-band amplitude (maximum-minimum)magsrc.var.amplitudefloatR21Fourier coefficient R_21phot.mag;arith.ratiofloatphi21? Fourier coefficient phi_21stat.FourierfloatnullableR31Fourier coefficient R_31phot.mag;arith.ratiofloatphi31? Fourier coefficient phi_31stat.FourierfloatnullableTypeSubtype of type II Cepheids (BLHer, RVTau, WVir or pWVir) (1)meta.code;src.varcharRAJ2000Right ascension, equinox J2000.0pos.eq.ra;meta.mainDEJ2000Declination, equinox J2000.0pos.eq.dec;meta.mainOGLE4OGLE-IV ID (SMCNNN.NN.NNNNN)meta.idcharOGLE3OGLE-III ID (SMCNNN.NN.NNNNN)meta.idcharOGLE2OGLE-II ID (SMC_SCN_NNNNNN)meta.idcharONameOther designation (from GCVS)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AcA/68/89/smcremIndividual remarks on SMC starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar name, OGLE-SMC-T2CEP-NN (No 1-54) or OGLE-LMC-T2CEP-NNN (No 1-294)meta.id;meta.maincharRemRemarkmeta.notecharJ/AcA/68/89/lmc_t2cepType II Cepheids in the SMC (tables ident and t2cep of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNote[R] R indicates a remarkmeta.notecharStarStar name, OGLE-SMC-T2CEP-NN (No 1-54) or OGLE-LMC-T2CEP-NNN (No 1-294)meta.id;meta.mainchar<Imag>Intensity mean I-band magnitudemagphot.mag;em.opt.Ifloat<Vmag>? Intensity mean V-band magnitudemagphot.mag;em.opt.VfloatnullablePerPerioddtime.perioddoublee_PerUncertainty of perioddstat.errordoubleT0Time of maximum brightness (HJD-2450000)dtime.epochdoubleIAmpI-band amplitude (maximum-minimum)magsrc.var.amplitudefloatR21Fourier coefficient R_21phot.mag;arith.ratiofloatphi21? Fourier coefficient phi_21stat.FourierfloatnullableR31Fourier coefficient R_31phot.mag;arith.ratiofloatphi31? Fourier coefficient phi_31stat.FourierfloatnullableLCPlot the light curvemeta.ref.urlcharTypeSubtype of type II Cepheids (BLHer, RVTau, WVir or pWVir) (1)meta.code;src.varcharRAJ2000Right ascension, equinox J2000.0pos.eq.ra;meta.mainDEJ2000Declination, equinox J2000.0pos.eq.dec;meta.mainOGLE4OGLE-IV ID (SMCNNN.NN.NNNNN)meta.idcharOGLE3OGLE-III ID (SMCNNN.NN.NNNNN)meta.idcharOGLE2OGLE-II ID (SMC_SCN_NNNNNN)meta.idcharONameOther designation (from GCVS)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AcA/68/89/lmcremIndividual remarks on LMC starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar name, OGLE-SMC-T2CEP-NN (No 1-54) or OGLE-LMC-T2CEP-NNN (No 1-294)meta.id;meta.maincharRemRemarkmeta.notechar