II/247ivo://CDS.VizieR/II/247CDSAlcock C.Allsman R.Alves D.Axelrod T.Bennett D.Cook K.,Freeman K.Lehner M.Griest K.Marshall S.Minniti D.Peterson B.,Pratt M.Quinn P.Rodgers A.Stubbs C.Sutherland W.Welch D.2018-02-01T11:50:43Z2003-07-07T12:01:14ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometrymagellanic-cloudsThe MACHO Project is a collaboration between scientists at the Mt. Stromlo & Siding Spring Observatories, the Center for Particle Astrophysics at the Santa Barbara, San Diego, & Berkeley campuses of the University of California, and the Lawrence Livermore National Laboratory. The primary aim of the project is a search for dark matter in the halo of the Milky Way in the form of objects like brown dwarfs or planets also named MACHOs, for MAssive Compact Halo Objects. The signature of these MACHOs is the occasional amplification of the light from extragalactic stars by the gravitational lens effect. The amplification can be large, but events are extremely rare: it is necessary to monitor photometrically several million stars for a period of years in order to obtain a useful detection rate. The MACHO project is described by Alcock et al. (1992, in "Robotic Telescopes in the 1990s", A.V. Fillippenko Ed., ASP Conf. Series 34, p.193). A dedicated 1.27-m telescope at Mount Stromlo, Australia is used to obtain observations of the LMC year-round, using a camera imaging a field of view of 0.5 square degrees at prime focus. Photometric observations of the LMC fields are obtained in two bandpasses simultaneously, using a dichroic beamsplitter to direct the blue (440-590nm) and red (590-780nm) light onto 2x2 mosaics of 2048x2048 Loral CCDs; the 15um pixels map to 0.63arcsec on the sky. The photometric reduction methods are detailed in Alcock et al. (1996ApJ...461...84A).MACHO Project (2001)https://cdsarc.cds.unistra.fr/viz-bin/cat/II/247CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://wwwmacho.anu.edu.au/ : the MACHO Project Home Pagehttp://wwwmacho.mcmaster.ca/ : MACHO Project Home PageJ/A+A/313/841 : MACHO LMC No.1 microlensing event (Dominik+, 1996)J/ApJ/562/337 : High proper-motion stars from MACHO astrometry (Alcock+, 2001)J/AJ/124/2039 : LMC Blue variable stars from MACHO (Keller+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/247https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/247http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/247https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/247https://vizier.iucaa.in/viz-bin/votable?-source=II/247http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/247GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/247/machovar (Variable Stars in the Magellanic Clouds)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/247/machovar?https://vizier.iucaa.in/viz-bin/conesearch/II/247/machovar?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/247/machovar?GETtext/xml+votable180.050000true75.3136-69.43320.0055555555555555565/8263 8269 8272 8274 8280 8281 6/33047 33051 33073 33092 33094 33095 33100 33101 33102 33136 331382.762881831355591e-19 3.9105737390043815e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/II/247?format=asciidefaultII/247/machovarVariable Stars in the Magellanic CloudsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldMacho Identification (Field) (1)meta.id.part;meta.mainintTileMacho Identification (Tile) (1)meta.id.part;meta.mainintSeqnMacho Identification (Sequence) (1)meta.id.part;meta.mainintRAJ2000Right Ascension J2000pos.eq.ra;meta.mainindexedDEJ2000Declination J2000pos.eq.dec;meta.mainrPerPeriod for "red" light (590-780nm)dtime.perioddoublebPerPeriod for "blue" light (440-590nm)dtime.perioddoubleVmagAveraged Kron-Cousins V magnitudemagphot.mag;em.opt.VfloatRmagAveraged Kron-Cousins R magnitudemagphot.mag;em.opt.RfloatrAmpAmplitude in "red" light (590-780nm)magsrc.var.amplitudefloatbAmpAmplitude in "blue" light (440-590nm)magsrc.var.amplitudefloatcAmpAmplitude in b-r indexmagsrc.var.amplitudefloatrSupRSADeviation from fitted light curve in red (2)stat.stdevfloatbSupRSADeviation from fitted light curve in blue (2)stat.stdevfloatrchi2Chi-2 fit of light curve in redstat.fit.chi2floatbchi2Chi-2 fit of light curve in bluestat.fit.chi2floatrsigStandard deviation of focal plane's red mag.magstat.error;phot.magfloatbsigStandard deviation of focal plane's blue mag.magstat.error;phot.magfloatVarPierce's Variability index (Pierce et al., 1994Natur.371..385P)src.var.indexfloatClassVariable star classification (3)meta.code;src.varintPointsNumber of observationsmeta.numberintcPointsNumber of concurrent points (4)meta.numberintrPointsNumber of points for red light curvemeta.numberintbPointsNumber of points for blue light curve.meta.numberintDataDownload the light curve as a VOTablemeta.ref.urlcharLCExtract the data and plotmeta.ref.urlchar