J/MNRAS/487/3505ivo://CDS.VizieR/J/MNRAS/487/3505doi:10.26093/cds/vizier.74873505CDSMichalska G.2024-08-19T20:19:01Z2019-07-08T07:36:29ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starspre-main-sequence-starsinfrared-photometryvisible-astronomybroad-band-photometryWe present results of the UBVIc variability search for variable stars in the young open cluster NGC 2244. In total, we found 245 variable stars. Most of them, are pre-main sequence variables with irregular variations typical for classical T Tauri stars (CTTSs). We found also 23 periodic variables, probably weak-lined T Tauri stars (WTTSs). We detected also four candidates for {delta} Scuti stars and 7 eclipsing binaries. Based on the mid-infrared Spitzer and WISE photometry and near infrared JHKS 2MASS photometry, we classified 104 young stellar sources among our variables: 1 Class I object, 1 Class I/flat spectrum object, 4 flat spectrum objects, 91 Class II objects, and 7 transition disc objects. This classification, together with r'i'H{alpha} IPHAS photometry and JHK UKIDSS photometry, were used for identification of pre-main sequence stars among irregular and periodic variables. In this way, 97 CTTS candidates (96 irregular and one periodic variable), 68 WTTS candidates (54 irregular and 14 periodic variables), and 6 Herbig Ae/Be stars were found. For 223 variable stars we calculated membership probability based on proper motions from Gaia DR2 catalogue. Majority of them, 143 stars, are cluster members with probability greater than 70 per cent. For only 36 variable stars the membership probability is smaller than 20 per cent.2019MNRAS.487.3505Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/487/3505CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)II/328 : AllWISE Data Release (Cutri+ 2013)II/321 : IPHAS DR2 Source Catalogue (Barentsen+, 2014)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJ/660/1532 : Spitzer/IRAC-MIPS survey of NGC 2244 (Balog+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/487/3505https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/487/3505http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/487/3505https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/487/3505https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/487/3505http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/487/3505GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/487/3505/table1 (The variable stars in NGC 2244, coordinates, UBVIc photometry and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/487/3505/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/487/3505/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/487/3505/table1?GETtext/xml+votable180.050000true98.00254174.87802780.0055555555555555566/22249 222526.772611666688002e-21 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/487/3505?format=asciiOpticalInfrareddefaultJ/MNRAS/487/3505/table1The variable stars in NGC 2244, coordinates, UBVIc photometry and propertiesSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName[1/245] Star designationmeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagJohnson V magnitudemagphot.mag;em.opt.VfloatV-IcJohnson-Cousins V-Ic colour indexmagphot.color;em.opt.V;em.opt.IfloatB-V? Johnson B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableU-B? Johnson U-B colour indexmagphot.color;em.opt.U;em.opt.BfloatnullableXVar[abc-] X-ray variability characterization (1)meta.code;src.varcharHaVarH{alpha} excess (2)meta.codecharMIRVarClassification based on MIR photometry (3)meta.note;photcharalpha? SED slope (4)spect.index;em.line.Halphafloatnullablen_alpha[)] Note on alpha (4)meta.notecharVarVariability type (5)meta.notecharReg[FTP] The area in (J-H)-(H-K) diagram (6)meta.codecharProb? Memberdhip probability (7)%statfloatnullableCNameThe catalogue name (8)meta.idcharNotesAdditional notes (9)meta.notecharJ/MNRAS/487/3505/table2The 2MASS, UKIDSS, Spitzer IRAC/MIPS, and IPHAS photometry of variable stars in NGC 2244recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName[1/245] Star designationmeta.id;meta.mainintUGPSName of source in survey (1)meta.idcharJmag? 2MASS J magnitude (2)magphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitude (2)magphot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks magnitude (2)magphot.mag;em.IR.KfloatnullableJmagU? UKIDSS J magnitude (1)magphot.mag;em.IR.JfloatnullableHmagUUKIDSS H magnitude (1)magphot.mag;em.IR.HfloatKmagUUKIDSS K magnitude (1)magphot.mag;em.IR.Kfloat3.6mag? Spitzer/IRAC 3.6 micron band magnitude (3)magphot.mag;em.IR.3-4umfloatnullable4.5mag? Spitzer/IRAC 4.5 micron band magnitude (3)magphot.mag;em.IR.4-8umfloatnullable5.8mag? Spitzer/IRAC 5.8 micron band magnitude (3)magphot.flux.density;em.IR.4-8umfloatnullable8.0mag? Spitzer/IRAC 8.0 micron band magnitude (3)magphot.flux.density;em.IR.8-15umfloatnullable24mag? Spitzer/MIPS 24 micron band magnitude (3)magphot.flux.density;em.IR.15-30umfloatnullabler'mag? IPHAS r' magnitude (4)magphot.mag;em.opt.Rfloatnullablei'mag? IPHAS i' magnitude (4)magphot.mag;em.opt.IfloatnullableHamag? IPHAS H{alpha} magnitude (4)magphot.flux;em.line.Halphafloatnullable