J/A+A/487/539ivo://CDS.VizieR/J/A+A/487/539doi:10.26093/cds/vizier.34870539CDSWorseck G.Wisotzki L.Selman F.2017-10-16T14:57:46Z2009-01-05T13:53:41ZCDS support team

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

cds-question@unistra.frWe present the results of our slitless spectroscopic survey for quasars near 18 known high-redshift quasars (QNQ). The three tables list the survey fields (26.2'x33.5'), the newly confirmed quasars and the remaining unconfirmed quasar candidates, respectively. For each confirmed quasar we give the equatorial coordinates, the redshift measured from the follow-up slit spectra, the redshift uncertainty and the Johnson B magnitude with uncertainty. The redshift uncertainty has been determined from the redshift dispersions of several emission lines. For the remaining candidates we list the equatorial coordinates, the approximate V magnitude, the redshift based on the slitless spectrum and our assessment of the redshift confidence.2008A&A...487..539Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/487/539CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/487/539https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/487/539http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/487/539https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/487/539https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/487/539http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/487/539GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/487/539/fields (QNQ survey fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/487/539/fields?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/487/539/fields?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/487/539/fields?GETtext/xml+votable180.050000true0.8454583-26.05466670.005555555555555556Cone search capability for table J/A+A/487/539/qnqqsos (Confirmed quasars from the QNQ survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/487/539/qnqqsos?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/487/539/qnqqsos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/487/539/qnqqsos?GETtext/xml+votable180.050000true0.645125-25.97888890.005555555555555556Cone search capability for table J/A+A/487/539/qnqcand (Unconfirmed QSO candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/487/539/qnqcand?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/487/539/qnqcand?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/487/539/qnqcand?GETtext/xml+votable180.050000true0.664167-26.1941670.0055555555555555566/8393 8395 16589 16656 21012 21014 23208 23210 25307 25329 25540 27747 34377 34379 34382 34502-34503 34570 35496 35498 35770 38878 40444 40446 45525 46122 46208 46407 46418 46649 46651 48610 48616https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/487/539?format=asciiOpticaldefaultJ/A+A/487/539/fieldsQNQ survey fieldszRedshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldName of the central known quasar (1)meta.id;meta.maincharprimaryRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainSimbadSimbad column added by the CDScharNEDSimbad column added by the CDScharJ/A+A/487/539/qnqqsosConfirmed quasars from the QNQ surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldName of the central known quasarobs.fieldcharNameQNQ designation, QNQJHHMMm-DDMMmeta.id;meta.maincharRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloate_zredshift error (estimated)stat.error;src.redshiftfloatBmagVega Johnson B magnitudemagphot.mag;em.opt.Bfloate_Bmag? magnitude error (1 sigma)magstat.error;phot.mag;em.opt.BfloatnullableJ/A+A/487/539/qnqcandUnconfirmed QSO candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldName of the central known quasarobs.fieldcharRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainVmagapproximate V magnitudemagphot.mag;em.opt.Vfloatzredshift from slitless spectrasrc.redshiftfloatq_zredshift confidence (1)meta.code.qual;src.redshiftint