J/AJ/114/2269ivo://CDS.VizieR/J/AJ/114/2269doi:10.26093/cds/vizier.51142269CDSKennefick J.D.Osmer P.S.Hall P.B.Green R.F.2023-04-06T16:50:26Z2000-02-19T21:00:21ZCDS support team

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

cds-question@unistra.frquasarsgalaxiesphotometrysurveysWe have made spectroscopic identifications of 39 additional quasar candidates from the Deep Multicolor Survey (DMS) of Hall et al. (1996, Cat. <J/ApJ/462/614>). We have identified 9 new quasars with 0.3<z<2.8 and 16.8<B<21.6, all from the group of candidates with ultraviolet excess (UVX). No new quasars with z>3 were found among the observed candidates selected due to their red (B-R) and (V-R) colors. As a result, there are now 55 confirmed quasars in the survey: 42 with 0.3<z<2, nine with 2<z<3, three with 3<z<4, and 1 at z=4.3. One new quasar, DMS 0059-0055, is very bright with B=16.8 and z=0.3, making its detection by our survey very unexpected. Including this new spectroscopy, the results of the DMS are converging with the predicted space densities of other surveys. In particular, we no longer find an excess of quasars with z<2.3 and B<21 in the survey over predictions based on models by Koo & Kron (1988ApJ...325...92K). Also, the excess in the number of quasars seen at z>3 over predictions based on models by Warren et al. (1994ApJ...421..412W) is less than previously suggested. We also demonstrate the success of our quasar color modeling which is important in assessing the completeness of our survey.1997AJ....114.2269Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/114/2269CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/104/185 : A deep multicolor survey. I. (Hall+ 1996)J/ApJ/462/614 : A deep multicolor survey. II. (Hall+ 1996)J/ApJS/119/189 : A deep multicolor Survey. IV. (Osmer+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/114/2269https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/114/2269http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/114/2269https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/114/2269https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/114/2269http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/114/2269GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/114/2269/table1 (Quasars: Identifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/114/2269/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/114/2269/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/114/2269/table1?GETtext/xml+votable180.050000true15.5493794-0.80352980.005555555555555556Cone search capability for table J/AJ/114/2269/table2 (Compact narrow emission-lines galaxies: Identifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/114/2269/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/114/2269/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/114/2269/table2?GETtext/xml+votable180.050000true15.7733041-0.75172880.0055555555555555566/10051 18020 18827 26002 27042 27048https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/114/2269?format=asciiOpticaldefaultJ/AJ/114/2269/table1Quasars: IdentificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential numbermeta.recordintNameDMS or N designation (1)meta.idcharRA1950Right ascension (1950.0)pos.eq.ra;meta.mainDE1950Declination (1950.0)pos.eq.dec;meta.mainBmagB magnitudemagphot.mag;em.opt.Bfloatz? Redshiftsrc.redshiftfloatnullableu_z[?] Uncertainty flag on zmeta.code.error;src.redshiftcharNotesNotesmeta.notechar_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.decnullableindexedJ/AJ/114/2269/table2Compact narrow emission-lines galaxies: IdentificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential numbermeta.recordintNameDMS or N designation (1)meta.idcharRA1950Right ascension (1950.0)pos.eq.ra;meta.mainDE1950Declination (1950.0)pos.eq.dec;meta.mainBmagB magnitudemagphot.mag;em.opt.Bfloatz? Redshiftsrc.redshiftfloatnullableu_z[?] Uncertainty flag on zmeta.code.error;src.redshiftcharNotesNotesmeta.notechar_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