J/ApJS/172/383ivo://CDS.VizieR/J/ApJS/172/383doi:10.26093/cds/vizier.21720383CDSTrump J.R.Impey C.D.McCarthy P.J.Elvis M.Huchra J.P.Brusa M.,Hasinger G.Schinnerer E.Capak P.Lilly S.J.Scoville N.Z.2008-09-11T08:26:35Z2008-09-11T08:23:27ZCDS support team

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

cds-question@unistra.frsurveysactive-galactic-nucleiquasarsredshiftedWe present spectroscopic redshifts for the first 466 X-ray and radio-selected AGN targets in the 2deg^2^ COSMOS field. Spectra were obtained with the IMACS instrument on the Magellan (Baade) telescope, using the nod-and-shuffle technique. We identify a variety of type 1 and type 2 AGNs, as well as red galaxies with no emission lines. Our redshift yield is 72% down to i_AB_=24, although the yield is >90% for i_AB_<22. We expect the completeness to increase as the survey continues. When our survey is complete and additional redshifts from the zCOSMOS project are included, we anticipate ~1100 AGNs with redshifts over the entire COSMOS field. Our redshift survey is consistent with an obscured AGN population that peaks at z~0.7, although further work is necessary to disentangle the selection effects.2007ApJS..172..383Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/172/383CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/ApJS/172/368 : AGN in XMM-Newton survey in COSMOS field (Mainieri+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/172/383https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/172/383http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/172/383https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/172/383https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/172/383http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/172/383GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/172/383/table2 (COSMOS IMACS AGN catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/172/383/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/172/383/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/172/383/table2?GETtext/xml+votable180.050000true149.74722292.34575510.0055555555555555565/6814https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/172/383?format=asciiOpticaldefaultJ/ApJS/172/383/table2COSMOS IMACS AGN catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[TIM2007]Object name (JHHMMSS.ss+DDMMSS.s), [TIM2007] JHHMMSS.ss+DDMMSS.s in Simbadmeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainimagHST/ACS i band AB magnitudephot.mag;em.opt.IfloatS/NSignal-to-noisestat.snrfloatTexpExposure timetime.duration;obs.exposureintTypeSource classification (1)src.classcharz? Redshiftsrc.redshiftdoublenullablen_z[c] Manually assigned z (2)meta.notechare_z? The 1{sigma} error in zstat.error;src.redshiftdoublenullablen_e_z[b] Manually assigned e_z (3)meta.notecharzconfConfidence note on z (4)meta.code.qual;src.redshiftchar