J/A+A/644/A95ivo://CDS.VizieR/J/A+A/644/A95doi:10.26093/cds/vizier.36440095CDSBraga V.F.Bono G.Fiorentino G.Stetson P.B.Dall'Ora M.,Salaris M.da Silva R.Fabrizio M.Marinoni S.Marrese M.P.,Mateo M.Matsunaga N.Monelli M.Wallerstein G.2021-09-09T09:46:46Z2020-12-04T08:50:13ZCDS support team

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

cds-question@unistra.frThe separation between RR Lyrae (RRLs) and type II Cepheid (T2Cs) variables based on their period is debated. Both types of variable stars are distance indicators, and we aim to promote the use of T2Cs as distance indicators in synergy with RRLs. We adopted new and existing optical and Near-Infrared (NIR) photometry of omega Cen to investigate several diagnostics (colour-magnitude diagram, Bailey diagram, Fourier decomposition of the light curve, amplitude ratios) for the empirical separation between Type II Cepheids (T2Cs) and RR Lyrae (RRLs). We also derived NIR period-luminosity relations and found a distance modulus of 13.65+/-0.07 (err.)+/-0.01 (sigma) mag, in agreement with the recent literature. We also found that RRLs and T2Cs obey the same PL relations in the NIR.2020A&A...644A..95Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/644/A95CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/68/315 : OGLE Galactic Cepheids (Udalski+, 2018)J/A+A/625/A14 : Reclassification of Cepheids in the Gaia DR2 (Ripepi+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/644/A95https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/644/A95http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/644/A95https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/644/A95https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/644/A95http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/644/A95GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/644/A95/table1 (List of candidate RRab in the Bulge)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/table1?GETtext/xml+votable180.050000true264.0407908-26.91644440.005555555555555556Cone search capability for table J/A+A/644/A95/table2 (Updated classification of Halo T2Cs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/table2?GETtext/xml+votable180.050000true214.2024728-6.28751780.005555555555555556Cone search capability for table J/A+A/644/A95/table3 (V-band amplitudes of Bulge T2Cs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/table3?GETtext/xml+votable180.050000true256.3347831-32.47156690.005555555555555556Cone search capability for table J/A+A/644/A95/tablea1 (Astrometric properties and classification of T2Cs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/tablea1?GETtext/xml+votable180.050000true201.694625-47.483306110.005555555555555556Cone search capability for table J/A+A/644/A95/tableb (Optical properties and periods (table B1) and NIR properties and periods (table B2) of the T2Cs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/tableb?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/tableb?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/tableb?GETtext/xml+votable180.050000true201.5215531-47.39514780.005555555555555556Cone search capability for table J/A+A/644/A95/tableggc (Properties of T2Cs in Globular Clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/644/A95/tableggc?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/644/A95/tableggc?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/644/A95/tableggc?GETtext/xml+votable180.050000true137.986875-64.889750.0055555555555555564/1803 5/7176-7177 7179-7180 7182-7183 7192 7194-7195 7198 7200-7201 7204-7205 7207 7209 7211 7216-7217 7219 7221-7223 7226-7227 7230 7300 7312 6/10336 12405 13955 14462 14489 19091 22114 25869 28687 28689 28698-28699 28703 28712-28714 28724-28725 28727 28738 28744 28747 28773 28784 28787 28791 28797-28799 28811 28814-28815 28826 28832-28833 28835 28841-28843 28872-28873 28880 28882 28896 28898-28899 28902-28903 28914 28916-28917 28926 28941 28970 28972-28973 29056 29059 29064 29184-29185 29204 29206 29216 29222 29233 29252-29253 29255 29257 29260-29261 29264-29265 29267 29273 29569 29881 30329 31019 31043 31115 31416-31417 31778 31866 32170 37294 37336 41607 42308 42333 42349 42351 42359-42360 42365-42367 42449 42452-42453 42455 42466 42490 42492 42700 42837 42841 42990 43227 44350 44786 47203 47791 47863 48035 480407.952274030004205e-20 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/644/A95?format=asciidefaultJ/A+A/644/A95/table1List of candidate RRab in the BulgerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDOGLE-IV ID, OGLE-BLG-T2CEP-NNNN (1)meta.id;meta.maincharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/644/A95/table2Updated classification of Halo T2CsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVariable name (GCVS)meta.id;meta.maincharGaiaDR2ID from Gaia DR2meta.idClassR19Classification in Ripepi et al. (2019A&A...625A..14R, Cat. J/A+A/625/A14)src.classcharClassNewOur classificationsrc.classcharr_ClassNewReference for new classification (1)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/644/A95/table3V-band amplitudes of Bulge T2CsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDOGLE-IV ID, OGLE-BLG-T2CEP-NNNN (1)meta.id;meta.maincharAmpV? V-band amplitudemagphot.magdoublenullablee_AmpV? uncertainty on V-band amplitudemagstat.errordoublenullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/644/A95/table7Distance modulus of omega Cen from PLsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandPL relation adopted to derive the distance modulusinstr.bandpasscharDMDistance modulusmagphot.mag.distModfloate_DMUncertainty on the distance modulusmagstat.errorfloats_DMsigma on the distance modulusmagstat.stdev;phot.magfloatJ/A+A/644/A95/tablea1Astrometric properties and classification of T2CsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the objectmeta.id;meta.maincharGaiaDR2? ID from Gaia DR2meta.idnullableType? Variable typemeta.code;src.varcharAHBtype? AHB classificationsrc.classcharRA_ICRSRight Ascension (ICRS) at Ep=2015.5 from Braga et al. (2016AJ....152..170B, Cat. J/AJ/152/170)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5 from Braga et al. (2016AJ....152..170B, Cat. J/AJ/152/170)degpos.eq.dec;meta.mainRAGdegRight Ascension from Gaia DR2 (ICRS) at Ep=2015.5degpos.eq.raDEGdegDeclination from Gaia DR2 (ICRS) at Ep=2015.5degpos.eq.decpmRA? Gaia DR2 Proper motion along RA direction, pmRA*cosDEuarcsec/yrpos.pm;pos.eq.radoublenullablee_pmRA? Uncertainty on Gaia DR2 Proper motion along RA directionuarcsec/yrstat.error;pos.pm;pos.eq.radoublenullablepmDE? Gaia DR2 Proper motion along DEC directionuarcsec/yrpos.pm;pos.eq.decdoublenullablee_pmDE? Uncertainty on Gaia DR2 Proper motion along DEC directionuarcsec/yrstat.error;pos.pm;pos.eq.decdoublenullable_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedJ/A+A/644/A95/tablebOptical properties and periods (table B1) and NIR properties and periods (table B2) of the T2CsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the object (VNN), Cl* NGC 5139 SAW VNN in Simbadmeta.id;meta.maincharPerPulsation perioddtime.perioddoubleUmagU-band mean magnitudemagphot.mag;em.opt.Ufloate_UmagUncertainty on U-band mean magnitudemagstat.error;phot.magfloatBmagB-band mean magnitudemagphot.mag;em.opt.Bfloate_BmagUncertainty on B-band mean magnitudemagstat.error;phot.magfloatVmagV-band mean magnitudemagphot.mag;em.opt.Vfloate_VmagUncertainty on V-band mean magnitudemagstat.error;phot.magfloatRmagR-band mean magnitudemagphot.mag;em.opt.Rfloate_RmagUncertainty on R-band mean magnitudemagstat.error;phot.magfloatImagI-band mean magnitudemagphot.mag;em.opt.Ifloate_ImagUncertainty on I-band mean magnitudemagstat.error;phot.magfloatAmpU? U-band amplitudemagphot.magfloatnullablee_AmpU? Uncertainty on U-band amplitudemagstat.errorfloatnullableAmpBB-band amplitudemagphot.magfloate_AmpBUncertainty on B-band amplitudemagstat.errorfloatAmpVV-band amplitudemagphot.magfloate_AmpVUncertainty on V-band amplitudemagstat.errorfloatAmpR? R-band amplitudemagsrc.var.amplitudefloatnullablee_AmpR? Uncertainty on R-band amplitudemagstat.errorfloatnullableAmpII-band amplitudemagsrc.var.amplitudefloate_AmpIUncertainty on I-band amplitudemagstat.errorfloatJmagJ-band mean magnitudemagphot.mag;em.IR.Jfloate_JmagUncertainty on J-band mean magnitudemagstat.error;phot.magfloatHmagH-band mean magnitudemagphot.mag;em.IR.Hfloate_HmagUncertainty on H-band mean magnitudemagstat.error;phot.magfloatKsmagKs-band mean magnitudemagphot.mag;em.IR.Kfloate_KsmagUncertainty on Ks-band mean magnitudemagstat.error;phot.magfloatAmpJJ-band amplitudemagsrc.var.amplitudefloate_AmpJUncertainty on J-band amplitudemagstat.errorfloatAmpH? H-band amplitudemagsrc.var.amplitudefloatnullablee_AmpH? Uncertainty on H-band amplitudemagstat.errorfloatnullableAmpKsKs-band amplitudemagsrc.var.amplitudefloate_AmpKsUncertainty on Ks-band amplitudemagstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/644/A95/tableggcProperties of T2Cs in Globular ClustersSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGCnameName of the Clustermeta.id.parentcharIDVariable star ID (VNNN)meta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPerPulsation perioddtime.periodfloatmeanmagMean magnitude (in the sixth column passband)magphot.mag;stat.meanfloatAmplAmplitude (in the sixth column passband)magphot.magfloatBandPassband for meanmag and Amplinstr.bandpasscharJmag? J-band mean magnitudemagphot.mag;em.IR.JfloatnullableHmag? H-band mean magnitudemagphot.mag;em.IR.HfloatnullableKsmag? Ks-band mean magnitudemagphot.mag;em.IR.Kfloatnullablee_Jmag? Uncertainty on J-band mean magnitudemagstat.error;phot.magfloatnullablee_Hmag? Uncertainty on H-band mean magnitudemagstat.error;phot.magfloatnullablee_Ksmag? Uncertainty on Ks-band mean magnitudemagstat.error;phot.magfloatnullableDMDistance modulus of the clustermagphot.mag.distModfloatE(B-V)Reddening of the clustermagphot.color.excessfloatr_DMReference paper for DM and E(B-V) (1)meta.ref;pos.framechar