J/A+A/296/665ivo://CDS.VizieR/J/A+A/296/665doi:10.26093/cds/vizier.32960665CDSVERON P.HAWKINS M.R.S.2013-02-27T06:29:48Z1997-12-09T17:27:48ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomyWide-band photometryredshiftedWe describe a survey for variable QSOs carried out for 15 years with the UK Schmidt telescope, using IIIaJ plates exposed behind a Schott GG395 filter. Objects brighter than B=21.0 on a reference plate and displaying a peak to peak amplitude of variability larger than B=0.35mag are selected. Plates in U, V, R and I were also obtained.1995A&A...296..665Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/296/665CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/296/665https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/296/665http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/296/665https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/296/665https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/296/665http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/296/665GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/296/665/table3 (Medium redshift QSOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/296/665/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/296/665/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/296/665/table3?GETtext/xml+votable180.050000true320.1748122-46.85057640.0055555555555555565/11662 11681 11683-11684 6/46635 46637-46639 46654 46721-46723 46728-46729 46740 46744 467464.0234554602041486e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/296/665?format=asciiOpticaldefaultJ/A+A/296/665/table3Medium redshift QSOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameAn '*' indicates that the QSO either is weaker than B=21.0, has a redshift z > 3.0, or does not belong to the restricted 18 sq. deg. areameta.notecharNameNamemeta.id;meta.maincharm_NameMultiplicity index on Namemeta.code.multipcharRA1950Right ascension 1950.0pos.eq.ra;meta.mainDE1950Declination 1950.0pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatBmagB magnitudemagphot.mag;em.opt.BfloatB-V[]? B-V colourmagphot.color;em.opt.B;em.opt.VfloatnullableU-B[]? U-B colourmagphot.color;em.opt.U;em.opt.BfloatnullableB-RB-R colourmagphot.color;em.opt.B;em.opt.RfloatdBAmplitude of variabilitymagsrc.varfloatM(B)Absolute B magnitude computed for Ho=50Km/s/Mpc and qo=0 in the way described by Veron-Cetty and Veron(1993)magphys.magAbs;em.opt.B;meta.modelledfloatNotesNotes (1)meta.noteint_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed