J/AJ/112/407ivo://CDS.VizieR/J/AJ/112/407doi:10.26093/cds/vizier.51120407CDSGregg M.D.Becker R.H.White R.L.Helfand D.J.McMahon R.G.Hook I.M.2023-04-06T16:50:23Z2008-01-08T22:47:51ZCDS support team

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

cds-question@unistra.frquasarsradio-sourcesphotometryredshiftedThe FIRST radio survey provides a new resource for constructing a large quasar sample. With source positions accurate to better than 1" and a point source sensitivity limit of 1mJy, it reaches 50 times deeper than previous radio catalogs. We report here on the results of the pilot phase for a FIRST Bright Quasar Survey (FBQS). Based on matching the radio catalog from the initial 300{deg}^2^ of FIRST coverage with the optical catalog from the Automated Plate Machine (APM) digitization of Palomar Sky Survey plates, we have defined a sample of 219 quasar candidates brighter than E=17.50. We have obtained optical spectroscopy for 151 of these and classified 25 others from the literature, yielding 69 quasars or Seyfert 1 galaxies, of which 51 are new identifications. The brightest new quasar has an E magnitude of 14.6 and z=0.91; four others are brighter than E=16. The redshifts range from z=0.12 to 3.42. Half of the detected objects are radio quiet with L_21-cm_<10^32.5^ergs/s. We use the results of this pilot survey to establish criteria for the FBQS that will produce a quasar search program which will be 70% efficient and 95% complete to a 21-cm flux density limit of 1.0mJy.1996AJ....112..407Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/112/407CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/59 : The FIRST Survey, version 1999Jul (White+ 1999)J/AJ/118/1435 : VLA FIRST survey quasar radio emission (Wadadekar+, 1999)J/ApJS/126/133 : The FIRST bright quasar survey. II. (White+, 2000)J/ApJS/135/227 : The FIRST bright quasar survey. III. (Becker+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/112/407https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/112/407http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/112/407https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/112/407https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/112/407http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/112/407GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/112/407/fbqs (FIRST Bright Quasar Catalog, part I)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/112/407/fbqs?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/112/407/fbqs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/112/407/fbqs?GETtext/xml+votable180.050000true109.39362529.27038890.005555555555555556Cone search capability for table J/AJ/112/407/egal (FBQS candidate list: galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/112/407/egal?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/112/407/egal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/112/407/egal?GETtext/xml+votable180.050000true126.415529.19272220.005555555555555556Cone search capability for table J/AJ/112/407/stars (FBQS candidate list: stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/112/407/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/112/407/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/112/407/stars?GETtext/xml+votable180.050000true109.523416728.73038890.0055555555555555565/2339 6/4607 4942 4947 4949-4951 4953 4961-4962 4966-4967 4978 5006 5011 5014 5027-5028 5040 5056 5183 5202 5207 5212-5213 5220 5223 5225 5263 5268 5270-5271 5274 5287 6223 6227-6228 6230-6231 6233-6234 6236 6242-6244 6246 6250 6290-6292 6294 6336 8701 8703 8951 8957 9023 9038 9043-9045 9048 9060 9064 9100 9109 9114-9115 9123-9126 9275 9362 9365-9366 9370 9372 9379 9381 9383 9385-9387 9728 10303 10318 10321 10323 10325 10327-10330 10337 10341-10343 10380 10383 10385 10392-10393 10401-10402 10407-10408 10432 28415 28477-28479 28495 28497-28499 28501 28503 28508 28515 28517 28519-28520 28562 28564 28566-28567 28577-28578 28581 28585-28588https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/112/407?format=asciiOpticalRadiodefaultJ/AJ/112/407/fbqsFIRST Bright Quasar Catalog, part Iz? Emission line redshiftsrc.redshiftfloatnullableu_zUncertainty flag on zmeta.code.error;src.redshiftcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFBQSSimbad column added by the CDSmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainBmagO apparent magnitude (blue)magphot.mag;em.opt.BfloatRmagE apparent magnitude (red)magphot.mag;em.opt.RfloatS20nuc20cm nuclear flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatS20tot? Total 20cm flux density including radio lobesmJyphot.flux.density;em.radio.750-1500MHzintnullablen_S20tot[b-l] Individual notes (1)meta.notecharn_z[a] a: Previously known QSOmeta.notecharlog(L20)? Inferred radio luminosity for the nuclear radio source1e-07W.Hz**-1phys.luminosity;em.radiofloatnullableRMAG? Absolute E magnitudemagphys.magAbsfloatnullableNote[mn] Note about FIRST source (2)meta.notecharFIRSTDisplay the FIRST datameta.ref.urlcharJ/AJ/112/407/egalFBQS candidate list: galaxiesz? Emission line redshiftsrc.redshiftfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClSimbad column added by the CDSsrc.classcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainBmagO apparent magnitude (blue)magphot.mag;em.opt.BfloatRmagE apparent magnitude (red)magphot.mag;em.opt.RfloatS20nuc20cm nuclear flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatS20tot? Total 20cm flux density including radio lobesmJyphot.flux.density;em.radio.750-1500MHzintnullablen_S20tot[b-l] Individual notes (1)meta.notecharu_zUncertainty flag on zmeta.code.error;src.redshiftcharn_z[a] a: Previously known QSOmeta.notecharlog(L20)? Inferred radio luminosity for the nuclear radio source1e-07W.Hz**-1phys.luminosity;em.radiofloatnullableRMAG? Absolute E magnitudemagphys.magAbsfloatnullableNote[mn] Note about FIRST source (2)meta.notecharFIRSTDisplay the FIRST datameta.ref.urlcharJ/AJ/112/407/starsFBQS candidate list: starsu_zUncertainty flag on zmeta.code.error;src.redshiftcharNote[mn] Note about FIRST source (2)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainBmagO apparent magnitude (blue)magphot.mag;em.opt.BfloatRmagE apparent magnitude (red)magphot.mag;em.opt.RfloatS20nuc20cm nuclear flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatS20tot? Total 20cm flux density including radio lobesmJyphot.flux.density;em.radio.750-1500MHzintnullablen_S20tot[b-l] Individual notes (1)meta.notecharz? Emission line redshiftsrc.redshiftfloatnullablen_z[a] a: Previously known QSOmeta.notecharlog(L20)? Inferred radio luminosity for the nuclear radio source1e-07W.Hz**-1phys.luminosity;em.radiofloatnullableRMAG? Absolute E magnitudemagphys.magAbsfloatnullableFIRSTDisplay the FIRST datameta.ref.urlchar