J/MNRAS/504/101ivo://CDS.VizieR/J/MNRAS/504/101doi:10.26093/cds/vizier.75040101CDSLata S.Pandey A.K.Pandey J.C.Panwar N.Paul P.2024-11-06T20:33:34Z2024-04-26T10:18:24ZCDS support team

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

cds-question@unistra.fropen-star-clustersyoung-stellar-objectsvariable-starspre-main-sequence-starsinfrared-photometryvisible-astronomyphotometryproper-motionsWe identify 228 periodic variables in the region of young open cluster NGC 281 using time series photometry carried out from 1 m class ARIES telescopes, Nainital. The cluster membership of these identified variables is determined on the basis of colour-magnitude, two colour diagrams, and kinematic data. A total of 81 variable stars are found to be members of the cluster NGC 281. Of 81 variables, 30 and 51 are probable main-sequence and pre-main-sequence members, respectively. This study classifies main-sequence variable stars into different variability types according to their periods of variability, shape of light curves, and location in the Hertzsprung-Russell diagram. These identified main-sequence variables could be {beta} Cep, {delta} Scuti, slowly pulsating B type, and new class variables. Among 51 pre-main-sequence variables, majority of them are weak line T Tauri stars. The remaining 147 variables could belong to the field population. The variability characteristics of the field population indicate that these variables could be RR Lyrae, {delta} Scuti, and binaries-type variables.2021MNRAS.504..101Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/504/101CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/PASJ/64/107 : Multiwavelength study of NGC 281 complex (Sharma+, 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/504/101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/504/101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/504/101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/504/101https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/504/101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/504/101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/504/101/table2 (Observational and physical properties of identified variable stars in the open cluster NGC 281)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/504/101/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/504/101/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/504/101/table2?GETtext/xml+votable180.050000true13.3943756.588220.0055555555555555566/30112.367228618189496e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/504/101?format=asciiOpticalInfrareddefaultJ/MNRAS/504/101/table2Observational and physical properties of identified variable stars in the open cluster NGC 281Class[MS PMS Field ] Classification name of the variable star (Class)meta.code.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDVariable star ID name (ID)meta.id;meta.maincharRAJ2000Right ascension of the variable star (J2000) (RA2000)degpos.eq.ra;meta.mainDEJ2000Declination of the variable star (J2000) (Dec2000)degpos.eq.dec;meta.mainVmagMagnitude apparent in V filter (V)magphot.mag;em.opt.Vfloate_VmagMean error on Vmag (Verror)magstat.error;phot.magfloatImag? Magnitude apparent in I filter (I)magphot.mag;em.opt.Ifloatnullablee_Imag? Mean error on Imag (Ierror)magstat.error;phot.magfloatnullablepmRA? Proper motion in Right Ascension taken from Gaia DR2 (Cat. I/345) (muRA)mas/yrpos.pm;pos.eq.rafloatnullablepmDE? Proper motion in Declination taken from Gaia DR2 (Cat. I/345) (muDec)mas/yrpos.pm;pos.eq.decfloatnullableProb? The membership probabilities of variable stars calculated using proper motion data (Prob)pos.pm;stat.probability;meta.modelledfloatnullableAmpMagnitude amplitude (Amplitude)magsrc.var.amplitudefloatPer1First variation time of magnitude amplitude (Period1)dtime.periodfloatPer2? Second variation time of magnitude amplitude (Period2)dtime.periodfloatnullablePer3? Third variation time of magnitude amplitude (Period3)dtime.periodfloatnullablePer4? Fourth variation time of magnitude amplitud (Period4)dtime.periodfloatnullablePer5? Fifth variation time of magnitude amplitude (Period5)dtime.periodfloatnullablePer6? Sixth variation time of magnitude amplitude (Period6)dtime.periodfloatnullable