J/A+A/588/A128ivo://CDS.VizieR/J/A+A/588/A128doi:10.26093/cds/vizier.35880128CDSFiguera Jaimes R.Bramich D.M.Skottfelt J.Kains N.Jorgensen U.G.,Horne K.Dominik M.Alsubai K.A.Bozza V.Calchi Novati S.Ciceri S.,D'Ago G.Galianni P.Gu S.-H.W Harpsoe K.B.Haugbolle T.Hinse T.C.,Hundertmark M.Juncher D.Korhonen H.Mancini L.Popovas A.Rabus M.,Rahvar S.Scarpetta G.Schmidt R.W.Snodgrass C.Southworth J.,Starkey D.Street R.A.Surdej J.Wang X.-B.Wertz O.(The MiNDSTEp Consortium)2018-06-08T09:51:17Z2016-03-30T08:34:03ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsphotometryTo obtain time-series photometry of the very crowded central regions of Galactic globular clusters. To obtain better angular resolution than has been previously achieved with conventional CCDs on ground-based telescopes. To complete, or improve, the census of the variable star population in those stellar systems. Images were taken using the Danish 1.54-m Telescope at the ESO observatory at La Silla in Chile. The telescope was equipped with an electron-multiplying CCD, and the short-exposure-time images obtained (ten images per second) were stacked using the shift-and-add technique to produce the normal-exposure-time images (minutes). Photometry was performed via difference image analysis. Automatic detection of variable stars in the field was attempted. The light curves of 12541 stars in the cores of ten globular clusters were statistically analysed to automatically extract the variable stars. We obtained light curves for 31 previously known variable stars (3 long-period irregular, 2 semi-regular, 20 RR Lyrae, 1 SX Phoenicis, 3 cataclysmic variables, 1 W Ursae Majoris-type and 1 unclassified) and we discovered 30 new variables (16 long-period irregular, 7 semi-regular, 4 RR Lyrae, 1 SX Phoenicis and 2 unclassified).2016A&A...588A.128Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/588/A128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/588/A128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/588/A128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/588/A128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/588/A128https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/588/A128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/588/A128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/588/A128/stars (Ephemerides and main characteristics of the variable stars in the field of globular clusters (tables 4-12))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/588/A128/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/588/A128/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/588/A128/stars?GETtext/xml+votable180.050000true6.02467083-72.079222220.0055555555555555566/28973 33321 42955 42990 43125 43227 47125 47777 47825 47868https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/588/A128?format=asciidefaultJ/A+A/588/A128/starsEphemerides and main characteristics of the variable stars in the field of globular clusters (tables 4-12)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterGlobular cluster namemeta.id.parentcharStarVariable star IDmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainEpoch? Epoch used (HJD)dtime.epoch;instr.setupdoublenullablePer? Perioddtime.perioddoublenullablee_Per? rms uncertainty on Perdstat.errordoublenullableImed? Median I magnitudemagphot.mag;em.opt.IfloatnullableAmp? Peak-to-peak amplitude in the light curve, A(i'+z')magsrc.var.amplitudefloatnullableNepNumber of epochmeta.numberintTypeClassification of the variablemeta.code.classcharLCShow the I light curvemeta.ref.urlcharJ/A+A/588/A128/table1Time series I photometry for all the variables studied in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterGlobular cluster namemeta.id.parentcharStarVariable star IDmeta.id;meta.maincharFilt[I] Observation filterobs.param;obscharHJDHeliocentric Julian date at mid-exposuredtime.epochdoublemagstStandard magnitudemagphot.mag;em.opt.IfloatmaginstInstrumental magnitudemagphot.mag;em.opt.Ifloate_maginstMagnitude uncertainty (standard or instrumental)magstat.errorfloatFrefReference flux (in ADU/s unit) (1)s**-1meta.ref;phot.fluxdoublee_FrefReference flux uncertainty (in ADU/s unit)s**-1stat.errordoubleDFluxDifference flux (in ADU/s unit) (1)s**-1meta.unit;phot.flux;arith.diffdoublee_DFluxDifference flux uncertainty (in ADU/s unit)s**-1stat.errordoublepPhotometric scale factor (1)arith.factorfloat