J/AJ/124/2039ivo://CDS.VizieR/J/AJ/124/2039doi:10.26093/cds/vizier.51242039CDSKeller S.C.Bessell M.S.Cook K.H.Geha M.Syphers D.2023-04-06T16:50:51Z2003-06-28T20:38:52ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsinfrared-photometryvisible-astronomyphotometryWe present the photometric properties of 1280 blue variable stars within the Large Megallanic Cloud. Photometry is derived from the MACHO database. The light curves of the sample exhibit a variety of quasi-periodic and aperiodic outburst behavior. A characteristic feature of the photometric variation is that the objects are reddest when at maximum outburst. A subset of 102 objects were examined spectroscopically. Within this subset, 91% exhibited Balmer emission in at least one epoch, in some cases with spectacular spectral variability. The variability observed in the sample is consistent with the establishment and maintenance of the Be phenomenon.2002AJ....124.2039Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/124/2039CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/247 : MACHO Variable Stars in the Magellanic Clouds (MACHO, 2001)J/A+A/313/841 : MACHO LMC No.1 microlensing event (Dominik+, 1996)J/AJ/114/326 : MACHO Variables V. (Alcock+ 1997)J/ApJ/542/257 : MACHO LMC first-overtone RR Lyrae (Alcock+, 2000)J/ApJ/562/337 : High proper-motion stars from MACHO astrometry (Alcock+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/124/2039https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/124/2039http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/124/2039https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/124/2039https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/124/2039http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/124/2039GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/124/2039/table1 (Positions and mean photometry for the sample of 1280 blue variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/2039/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/2039/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/2039/table1?GETtext/xml+votable180.050000true75.30708333-69.334511110.0055555555555555565/8263 8269 8274 8280-8281 6/33047 33051 33073 33089-33092 33094 33100 33102 33136https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/124/2039?format=asciiOpticalInfrareddefaultJ/AJ/124/2039/table1Positions and mean photometry for the sample of 1280 blue variablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMACHOThe MACHO identification number (1)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmag? The V band magnitude (2)magphot.mag;em.opt.VfloatnullableV-R? The (V-R) color (2)magphot.color;em.opt.V;em.opt.RfloatnullableModeThe dominant mode of variability (3)meta.code;src.varintLCDisplay images, spectra from MACHO Data-basemeta.refchar