J/MNRAS/473/3131ivo://CDS.VizieR/J/MNRAS/473/3131doi:10.26093/cds/vizier.74733131CDSMuraveva T.Subramanian S.Clementini G.Cioni M.-R.L.Palmer M.,Van Loon J.T.Moretti M.I.De Grijs R.Molinaro R.Ripepi V.,Marconi M.Emerson J.Ivanov V.D.2024-08-17T20:21:35Z2021-02-10T15:04:04ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsphotometryWe present results from the analysis of 2997 fundamental mode RR Lyrae variables located in the Small Magellanic Cloud (SMC). For these objects, near-infrared time series photometry from the VISTA survey of the Magellanic Clouds system (VMC) and visual light curves from the OGLE IV (Optical Gravitational Lensing Experiment IV) survey are available. In this study, the multi-epoch Ks-band VMC photometry was used for the first time to derive intensity-averaged magnitudes of the SMC RR Lyrae stars. We determined individual distances to the RR Lyrae stars from the near-infrared period-absolute magnitude-metallicity (PM_Ks_Z) relation, which has some advantages in comparison with the visual absolute magnitude-metallicity (M_V_-[Fe/H]) relation, such as a smaller dependence of the luminosity on interstellar extinction, evolutionary effects and metallicity. The distances we have obtained were used to study the three-dimensional structure of the SMC. The distribution of the SMC RR Lyrae stars is found to be ellipsoidal. The actual line-of-sight depth of the SMC is in the range 1-10kpc, with an average depth of 4.3+/-1.0kpc. We found that RR Lyrae stars in the eastern part of the SMC are affected by interactions of the Magellanic Clouds. However, we do not see a clear bimodality observed for red clump stars, in the distribution of RR Lyrae stars.2018MNRAS.473.3131Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/473/3131CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/351 : VISTA Magellanic Survey (VMC) catalog (Cioni+, 2011)J/A+A/531/A157 : LMC planetary nebulae (VMC Survey II) (Miszalski+, 2011)J/MNRAS/424/1807 : VISTA Magellanic Cloud Survey. V. Cepheids (Ripepi+, 2012)J/A+A/549/29 : VMC Survey. VI. QSOs behind Magellanic system (Cioni+ 2013)J/A+A/554/A33 : VMC Survey. VII. 30 Doradus reddening map (Tatton+, 2013)J/MNRAS/437/2307 : VMC survey. VIII. LMC anomalous Cepheid (Ripepi+, 2014)J/MNRAS/437/2702 : VMC survey. X. MC Cepheids, RR Lyr & binariesJ/MNRAS/446/3034 : VMC survey. XIII. LMC Type II Cepheids (Ripepi+, 2015)J/MNRAS/449/639 : VMC survey. XIV. SFR in SMC (Rubele+, 2015)J/MNRAS/454/839 : VMC survey. XVI. LMC clusters (Piatti+, 2015)J/ApJS/224/21 : VMC survey. XIX. Classical Cepheids in SMC (Ripepi+, 2016)J/MNRAS/459/1687 : VMC survey. XX. SMC new Cepheids light curvesJ/ApJ/849/149 : VMC survey, XXVII. Young stellar structures in LMCJ/ApJ/858/31 : VMC survey. XXIX. Star formation in SMC (Sun+, 2018)J/A+A/636/A48 : VMC Survey. XXXVII. MC AGB stars (Groenewegen+, 2020)J/AcA/66/131 : VI light curves of SMC and LMC RR Lyrae (Soszynski+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/473/3131https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/473/3131http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/473/3131https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/473/3131https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/473/3131http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/473/3131GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/473/3131/table1 (Properties of the 2997 RRab stars in the SMC analysed in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/473/3131/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/473/3131/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/473/3131/table1?GETtext/xml+votable180.050000true15.8602083-71.35766670.0055555555555555564/2082 5/8321-8326 8332 6/32943 32953-32955 32957-32958 33308-33310 33336-33338 33409 33412-33413 453282.367228618189496e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/473/3131?format=asciidefaultJ/MNRAS/473/3131/table1Properties of the 2997 RRab stars in the SMC analysed in this paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVMCVMC identification, JHHMMSS.ss+DDMMSS.smeta.id;meta.maincharOGLEOGLE identification, OGLE-SMC-RRLYR-NNNNmeta.idcharTileVMC tile identification numberobs.fieldcharVmag? V magnitude from OGLE IV cataloguemagphot.mag;em.opt.VfloatnullableImagI magnitude from OGLE IV cataloguemagphot.mag;em.opt.IfloatPeriodPulsation period from OGLE IVdtime.perioddoubleKs0magDereddened Ks magnitudemagphot.mag;em.IR.Kfloate_Ks0magrms uncertainty in Ks0magmagstat.error;phot.magfloatAKsAmplitude of variation in Ksmagarith.rate;phot.magfloatE(V-I)Reddeningmagphot.color.excessfloate_E(V-I)rms uncertainty on E(V-I)magstat.errorfloat[Fe/H]Metallicity (1)phys.abund.Zfloate_[Fe/H]rms uncertainty on [Fe/H]stat.error;phys.abund.Fefloat(m-M)0Dstance modulusmagphot.mag.distModfloate_(m-M)0rms uncertainty on (m-M)0magstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from VMC name (right ascension part)degpos.eq.ra;meta.main_DEPositions from VMC name (declination part)degpos.eq.dec;meta.main