J/AJ/135/1350ivo://CDS.VizieR/J/AJ/135/1350doi:10.26093/cds/vizier.51351350CDSSchmidtke P.C.Chobanian J.B.Cowley A.P.2018-01-02T13:43:12Z2010-09-13T15:59:55ZCDS support team

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

cds-question@unistra.frinfrared-photometryvisible-astronomybroad-band-photometryvariable-starsbe-starsastronomical-object-identificationmagellanic-cloudsIn a sample of 150 hot stars in NGC 330, a SMC cluster containing a high fraction of Be stars, we searched for photometric variables using OGLE II data. At least one third of all stars are variable, with 38 being periodic. We found 27 pulsators ({lambda} Eri variables), six eclipsing systems, two bursting sources, and several stars with unusual photometric behavior. Pulsations are present in ~30% of known Be stars, and they are long lived, lasting more than a decade. The strongest pulsators are associated with stars evolved from the main sequence.2008AJ....135.1350Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/135/1350CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/102/451 : Emission-line stars and PNe in the SMC (Meyssonnier+ 1993)J/AJ/108/932 : Variable stars in the SMC cluster NGC 330 (Sebo+, 1994)J/AcA/48/147 : OGLE SMC BVI photometry (Udalski+ 1998)J/A+AS/134/489 : Be stars in MC young clusters (Keller+ 1999)J/A+A/472/577 : NGC 330 Be stars and binaries (Martayan+, 2007)http://ogledb.astrouw.edu.pl/~ogle/photdb/ : OGLE II photometric databaseshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/135/1350https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/135/1350http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/135/1350https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/135/1350https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/135/1350http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/135/1350GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/135/1350/table1 (Sample of stars in NGC 330)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/135/1350/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/135/1350/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/135/1350/table1?GETtext/xml+votable180.050000true13.9899167-72.46333330.0055555555555555566/33317https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/135/1350?format=asciiOpticalInfrareddefaultJ/AJ/135/1350/table1Sample of stars in NGC 330recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameSimbad column added by the CDSmeta.ref.urlcharNameName except for 2 stars (G1)meta.id;meta.maincharprimaryXIDOther identification(s) (G1)meta.idcharVmagV-band magnitudemagphot.mag;em.opt.Vfloatr_Vmag[d] Origin of Vmag (2)meta.ref;pos.framecharB-V? B-V color indexmagphot.color;em.opt.B;em.opt.Vfloatnullabler_B-V[ed] Origin of B-V (2)meta.ref;phot.color;em.opt.BcharOGLEOGLE II Number SMC-SC7 (<OGLE SMC-SC7 NNNNNN> in Simbad)meta.idintf_OGLE[fg] Flag on OGLE (3)meta.codecharImagI-band mean magnitudemagphot.mag;em.opt.IfloatIsigStandard deviation of the normalized light curvemagstat.stdev;phot.magfloatNotesNote(s) on individual sources (4)meta.notecharSimbadNameSimbad column added by the CDSmeta.idchar_RAPosition from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/135/1350/table2Photometric periods for stars in NGC 330CommCommentsmeta.notecharf_Var[de] Flag on Vartype (3)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName from Balona, 1992MNRAS.256..425B, except for 2 stars (G1)meta.id;meta.maincharXIDOther identification(s) (G1)meta.idcharImagI-band mean magnitude (1)magphot.mag;em.opt.IfloatIampI-band amplitude (1)magphot.mag;em.opt.Ifloatf_Per1Flag on Per1meta.codecharPer1Photometric perioddtime.periodfloatu_Per1Uncertainty flag on Per1meta.code.errorcharPer2? 2d photometric perioddtime.periodfloatnullableu_Per2Uncertainty flag on Per2meta.code.errorcharPer3? 3d photometric perioddtime.periodfloatnullableVarVariable type (NRP, ecl, bur) (2)meta.code;src.varchar