II/202ivo://CDS.VizieR/II/202CDSSterken C.Manfroid J.Beele D.de Koff S.Eggenkamp I.M.M.G.,Goecking K.Jorissen A.Kaufer A.Kuss C.Schoenmakers A.P.,Still J.M.van Loon J.Vink J.Vrielmann S.Waelde E.1997-12-09T15:14:01Z1997-12-09T16:13:51ZCDS support team

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

cds-question@unistra.frvisible-astronomymedium-band-photometryvariable-starsThis is the fourth catalogue of photometric data in the Stroemgren system obtained during the period June 18, 1992 - August 23, 1994 in the framework of the Long-Term Photometry of Variables (LTPV) program at the European Southern Observatory. Since our goal is not absolute (all-sky) photometry, the observations should be used for differential photometry only. The mean values of the r.m.s. deviations of the differential measurements of comparison stars are around (from Table 3 of paper) ------------------------------ y b-y m1 c1 ------------------------------ 0.005 0.002 0.004 0.007 ------------------------------ Important Notice: The file "ltpv4" which was accessible at CDS before 20 October 1996 was incorrect.1995A&AS..113...31Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/II/202CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/170 : Long-Term Photometry of Variables at ESO I (1991)II/188 : Long-Term Photometry of Variables at ESO II (1993)II/200 : Long-Term Photometry of Variables at ESO III (1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/202https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/202http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/202https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/202https://vizier.iucaa.in/viz-bin/votable?-source=II/202http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/202GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/202/stars4 (The list of stars observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/202/stars4?https://vizier.iucaa.in/viz-bin/conesearch/II/202/stars4?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/202/stars4?GETtext/xml+votable180.050000true6.425-50.838060.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/II/202?format=asciiOpticaldefaultII/202/ltpv4*The observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar Identification (1)meta.id;meta.maincharprimaryHJD[2448791/2449596] Heliocentric Julian Datedtime.epochdoubleAirmassAirmass quantity (sec.z)obs.airMassfloatymagStroemgren's y magnitudemagphot.mag;em.opt.Vfloatb-yStroemgren's b-y colourmagphot.color;em.opt.B;em.opt.Vfloatm1Stroemgren's m1 ((v-b)-(b-y)) colourmagphot.colorfloatc1Stroemgren's c1 ((u-v)-(v-b)) colourmagphot.colorfloatT/S[N] Telescope/system code ("N" is the "natural" system")meta.notecharII/202/stars4The list of stars observedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar Identification, as in file "ltpv4".meta.id;meta.maincharprimaryHDHD designationmeta.idcharHRHR (Bright Star) designationmeta.idcharDMDurchmusterung (BD, CoD, CPD) designationsmeta.idcharName2Other designationmeta.idcharRAJ2000Right Ascension J2000 (hours)pos.eq.ra;meta.mainDEJ2000Declination J2000 (sign)pos.eq.dec;meta.mainnullableSpSpectral classificationsrc.spTypechar