J/A+A/445/423ivo://CDS.VizieR/J/A+A/445/423doi:10.26093/cds/vizier.34450423CDSFliri J.Riffeser A.Seitz S.Bender R.2017-06-19T07:57:52Z2008-09-12T13:38:44ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryvariable-starsThe observations in the WeCAPP microlensing survey towards the Andromeda galaxy (M31) for a period of three years (2000-2003) resulted in a database with unprecedented time coverage for an extragalactic variable star study. We have monitored a 16.1' x 16.6' field centered on the nucleus of M31 in two optical bands (R and I) using the 0.8-m telescope at Wendelstein, Germany and the 1.2-m telescope at Calar Alto, Spain. Using the difference imaging method we detected 23781 variable sources for which we calculated the periods and variation amplitudes. We classified the variables according to their position in the R-band period-amplitude plane. Three groups can be distinguished; while the first two groups can be mainly associated with Cepheid-like variables (population I Cepheids in group I; type II Cepheids and RV Tauri stars in group II), the third one consists of Long Period Variables (LPVs). We detected 37 RV Tauri stars and 11 RV Tauri candidates, which makes this catalogue one of the largest collections of this class of stars to date. The classification scheme is supported by Fourier decomposition of the light curves. The catalogue of variable stars contains the positions, the periods in R and I, the significance of the assigned periods, and the variation amplitudes in the R and I bands.2006A&A...445..423Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/445/423CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/445/423https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/445/423http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/445/423https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/445/423https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/445/423http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/445/423GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/445/423/table2 (Variables in Group 1-3)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/445/423/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/445/423/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/445/423/table2?GETtext/xml+votable180.050000true10.78437541.13508330.005555555555555556Cone search capability for table J/A+A/445/423/cep (Cepheids })https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/445/423/cep?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/445/423/cep?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/445/423/cep?GETtext/xml+votable180.050000true10.83762541.13719440.0055555555555555566/2623 2709https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/445/423?format=asciiOpticaldefaultJ/A+A/445/423/table2Variables in Group 1-3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqV Catalogue identifier, [FRS2006] WeCAPP VNNNNN in Simbadmeta.id;meta.mainintClClassification (3)meta.code;src.varcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainRPer? Period derived from R band datadtime.perioddoublenullableRSig? -log10 of significance of RP (1)stat.fit.goodnessfloatnullableIPer? Period derived from I band datadtime.perioddoublenullableISig? -log10 of significance of IP (1)stat.fit.goodnessfloatnullableRampAmplitude in broad-band R filter (2)1e-05Jyarith.rate;src.var.amplitude;em.opt.RfloatIampAmplitude in broad-band I filter (2)1e-05Jyarith.rate;src.var.amplitude;em.opt.IfloatJ/A+A/445/423/cepCepheids }recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_SeqSimbad column added by the CDSsrc.classcharSeqV Catalogue identifier, [FRS2006] WeCAPP VNNNNN in Simbadmeta.id;meta.mainintClClassification (3)meta.code;src.varcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainRPer? Period derived from R band datadtime.perioddoublenullableRSig? -log10 of significance of RP (1)stat.fit.goodnessfloatnullableIPer? Period derived from I band datadtime.perioddoublenullableISig? -log10 of significance of IP (1)stat.fit.goodnessfloatnullableRampAmplitude in broad-band R filter (2)1e-05Jyarith.rate;src.var.amplitude;em.opt.RfloatIampAmplitude in broad-band I filter (2)1e-05Jyarith.rate;src.var.amplitude;em.opt.Ifloat