J/MNRAS/512/563ivo://CDS.VizieR/J/MNRAS/512/563doi:10.26093/cds/vizier.75120563CDSRipepi V.Chemin L.Molinaro R.Cioni M.-R.L.Bekki K.Clementini G.,De Grijs R.De Somma G.El Youssoufi D.Girardi L.Groenewegen M.A.T.,Ivanov V.Marconi M.Mcmillan P.J.Van Loon J.T.2025-09-17T20:10:02Z2025-03-27T13:38:12ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsstandard-starsvariable-starsphotometryvisible-astronomyinfrared-astronomyastrometryinterstellar-reddeningWe employed the VISTA near-infrared YJKs survey of the Magellanic System (VMC) to analyse the Y, J, K_s_ light curves of {delta} Cepheid stars (DCEPs) in the Large Magellanic Cloud (LMC). Our sample consists of 4408 objects accounting for 97 per cent of the combined list of OGLE IV and Gaia DR2 DCEPs. We determined a variety of period-luminosity (PL) and period-Wesenheit PW relationships for Fundamental (F) and First Overtone (1O) pulsators. We discovered for the first time a break in these relationships for 1O DCEPs at P= 0.58 d. We derived relative individual distances for DCEPs in the LMC with a precision of ~1 kpc, calculating the position angle of the line of nodes and inclination of the galaxy: {theta} = 145.6 +/- 1.0 deg and i = 25.7 +/- 0.4 deg. The bar and the disc are seen under different viewing angles. We calculated the ages of the pulsators, finding two main episodes of DCEP formation lasting ~40 Myr which happened 93 and 159 Myr ago. Likely as a result of its past interactions with the SMC, the LMC shows a non-planar distribution, with considerable structuring: the bar is divided into two distinct portions, the eastern and the western displaced by more than 1 kpc from each other. Similar behaviour is shown by the spiral arms. The LMC disc appears 'flared' and thick, with a disc scale height of h ~ 0.97 kpc. This feature can be explained by strong tidal interactions with the Milky Way and/or the Small Magellanic Cloud or past merging events with now disrupted LMC satellites.2022MNRAS.512..563Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/512/563CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/832/176 : Classical Cepheids in MCs. I. LMC disk (Inno+, 2016)J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)II/351 : VISTA Magellanic Survey (VMC) catalog (Cioni+, 2011)II/375 : VISTA Magellanic Survey (VMC) catalog (YJKs) DR6J/MNRAS/472/808 : YJKs light curves of SMC Classical Cepheids (Ripepi+, 2017)J/ApJS/224/21 : The VMC survey. XIX. Classical Cepheids in SMCI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/337 : Gaia DR1 (Gaia Collaboration, 2016)J/MNRAS/459/1687 : Ks light curve of 299 SMC new Cepheids (Moretti+, 2016)J/MNRAS/437/2702 : MC Cepheids, RR Lyrae stars and binaries (Moretti+, 2014)J/MNRAS/446/3034 : LMC Type II Cepheids J and Ks light curves (Ripepi+, 2015)J/MNRAS/437/2307 : LMC anomalous Cepheid Ks light curves (Ripepi+, 2014)J/A+A/625/A14 : Reclassification of Cepheids in the Gaia DR2 (Ripepi+, 2019)J/A+A/622/A60 : Gaia DR2 misclassified RR Lyrae list (Clementini+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/512/563https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/512/563http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/512/563https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/512/563https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/512/563http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/512/563GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/512/563/table2 (Photometric parameters for our LMC DCEPs sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/512/563/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/512/563/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/512/563/table2?GETtext/xml+votable180.050000true67.7405-69.060390.0055555555555555564/2065 2068-2069 5/8259 8265 8268-8269 8280-8281 8284 8448 8450 9728 6/33029 33031 33033-33035 33056-33057 33080-33081 33083-33085 33087 33128-33129 33132-33133 33140-33141 33144 33796-33798 33804 33824 37408 37410 37416 37419 37504-37506 37513-37516 37536-37538 37544-375467.952274030004205e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/512/563?format=asciiOpticalInfrareddefaultJ/MNRAS/512/563/table2Photometric parameters for our LMC DCEPs samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentification name (SOURCEID) (1)meta.id;meta.maincharVMC-DR4&DR6Display the VMC catalog DR4 and DR6 of Cioni et al. 2011A&A...527A.116C, Cat. II/375 and Cat. II/351meta.ref.urlcharModePulsation mode (MODE) (2)meta.code;src.varcharRAJ2000Right ascension (J2000) (RAdeg)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DECdeg)degpos.eq.dec;meta.mainVmag? V-band magnitude (V)magphot.mag;em.opt.VfloatnullablePerPulsation period (P)dtime.perioddoubleYmag? Intensity-averaged magnitude <Y> in Y band (Y)magphot.mag;em.IR.J;stat.meanfloatnullablee_YmagMean relative uncertainty {sigma}_<Y>_ of Ymag (errY)magstat.error;phot.magfloatAmpYmag? Peak-to-peak intensity-averaged amplitude A(Y) in Y band (ampY)magsrc.var.amplitude;em.IR.Jfloatnullablee_AmpYmag? Mean relative uncertainty {sigma}_A(Y)_ of AmpYmag (err_ampY)magstat.error;phot.magfloatnullableJmagIntensity-averaged magnitude <J> in J band (J)magphot.mag;em.IR.J;stat.meanfloate_JmagMean relative uncertainty {sigma}_<J>_ of Jmag(errJ)magstat.error;phot.magdoubleAmpJmag? Peak-to-peak intensity-averaged amplitude A(J) in J band (ampJ)magsrc.var.amplitude;em.IR.Jfloatnullablee_AmpJmag? Mean relative uncertainty {sigma}_A(J)_ of AmpJmag (err_ampJ)magstat.error;phot.magfloatnullableKsmagIntensity-averaged magnitude <Ks> in Ks band (K)magphot.mag;em.IR.Kfloate_KsmagMean relative uncertainty {sigma}_<Ks>_ of Ksmag (errK)stat.errordoubleAmpKsmag? Peak-to-peak intensity-averaged amplitude A(Ks) in Ks band (ampK)src.var.amplitude;em.IR.Kfloatnullablee_AmpKsmag? Mean relative uncertainty {sigma}_A(Ks)_ of AmpKsmag (err_ampK)stat.errorfloatnullableE(V-I)Calibrated reddening E (V-I) (evi)phot.color.excess;em.opt.V;em.opt.IfloatLCLight curvesmeta.ref.urlcharFlag1[0/1] Flag indicating whether or not the star was used in the derivation of PL(Y0) relation, 4366 yes and 134 no (fl_PLY)meta.code.errorintFlag2[0/1] Flag indicating whether or not the star was used in the derivation of PL(J0) relation, 4408 yes and 92 no (fl_PLJ)meta.code.errorintFlag3[0/1] Flag indicating whether or not the star was used in the derivation of PL(Ks0) relation, 4385 yes and 115 no (fl_PLK)meta.code.errorintFlag4[0/1] Flag indicating whether or not the star was used in the derivation of PW(Y,Ks) relation, 4307 yes and 193 no (fl_PWYK)meta.code.errorintFlag5[0/1] Flag indicating whether or not the star was used in the derivation of PW(J,Ks) relation, 4360 yes and 140 no (fl_PWJK)meta.code.errorintFlag6[0/1] Flag indicating whether or not the star was used in the derivation of PW(V,Ks) relation, 4134 yes and 366 no (fl_PWVK)meta.code.errorintSimbadNameSimbad column added by the CDSmeta.idcharnullable