J/ApJS/126/133ivo://CDS.VizieR/J/ApJS/126/133doi:10.26093/cds/vizier.21260133CDSWhite R.L.Becker R.H.Gregg M.D.Laurent-Muehleisen S.A.,Brotherton M.S.Impey C.D.Petry C.E.Foltz C.B.Chaffee F.H.,Richards G.T.Oegerle W.R.Helfand D.J.McMahon R.G.Cabanela J.E.2017-07-03T14:27:05Z2008-01-08T23:01:04ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsradio-galaxiesquasarsradio-sourcesWe have used the Very Large Array (VLA) FIRST survey and the Automated Plate Measuring Facility (APM) catalog of the Palomar Observatory Sky Survey I (POSS-I) plates as the basis for constructing a new radio-selected sample of optically bright quasars. This is the first radio-selected sample that is competitive in size with current optically selected quasar surveys. Using only two basic criteria, radio-optical positional coincidence and optical morphology, quasars and BL Lac objects can be identified with 60% selection efficiency; the efficiency increases to 70% for objects fainter than 17 mag. We show that a more sophisticated selection scheme can predict with better than 85% reliability which candidates will turn out to be quasars. This paper presents the second installment of the FIRST Bright Quasar Survey (FBQS), with a catalog of 636 quasars distributed over 2682 deg^2^. The quasar sample is characterized and all spectra are displayed.2000ApJS..126..133Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/126/133CatalogResearchIsServedByTAP 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/AJ/112/407 : The FIRST bright QSO survey. I. (Gregg+, 1996)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/ApJS/126/133https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/126/133http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/126/133https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/126/133https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/126/133http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/126/133GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/126/133/stars (FBQS candidate list: stars and unknown objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/126/133/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/126/133/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/126/133/stars?GETtext/xml+votable180.050000true102.7755583331.317222220.005555555555555556Cone search capability for table J/ApJS/126/133/fbqs (FIRST Bright Quasar Catalog, part II)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/126/133/fbqs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/126/133/fbqs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/126/133/fbqs?GETtext/xml+votable180.050000true106.8872958338.37040.005555555555555556Cone search capability for table J/ApJS/126/133/egal (FBQS candidate list: AGNs and galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/126/133/egal?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/126/133/egal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/126/133/egal?GETtext/xml+votable180.050000true106.604787539.030994440.0055555555555555565/1360 1592 1614 1619 2317 2374 2449 2468 7154 6/4471 4473 4540 4542 4549 4551 4556 4557 4559 4563 4565 4566 4568 4572 4576 4577 4584 4588 4591 4596 4603 4604 4606 4607 4730 4731 4733 4795 4798 4812 4813 4814 4816 4819 4820 4821 4826 4830 4836 4843 4844 4846 4848 4850 4852 4859 4860 4861 4863 4871 4875 4886 4888 4892 4895 4914 4919 4923 4930 4942 4946 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32687https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/126/133?format=asciiRadiodefaultJ/ApJS/126/133/starsFBQS candidate list: stars and unknown objectsrecnoRecord 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.mains/gOptical morphology in the APM catalog (G1)src.class.starGalaxycharRmagAPM E plate magnitude (red)magphot.mag;em.opt.RfloatBmagAPM O plate magnitude (blue)magphot.mag;em.opt.Bfloat(B-R)The O-E colormagphot.color;em.opt.B;em.opt.RfloatARExtinction correction applied to Emagphys.absorptionfloatSepSeparation between radio and opticalarcsecpos.angDistancefloatSpeakThe 20cm (1.4GHz) peak flux density from FIRSTmJyphot.flux.density;em.radio.750-1500MHzfloatSintIntegrated flux density from FIRSTmJyphot.flux.density;em.radio.750-1500MHzfloatP(Q)? Probability that the candidate is a quasar (in table8.dat only) (2)stat.probabilityfloatnullableNotesNotes on the object (see ref.dat file)meta.notecharFIRSTLink to the FIRST Data (Cat. VIII/71)meta.ref.urlcharJ/ApJS/126/133/refCode references for data in table*.datrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefCodeReference code from table*.datmeta.ref;pos.framecharTextText of notesmeta.notecharJ/ApJS/126/133/fbqsFIRST Bright Quasar Catalog, part II(B-R)The O-E colormagphot.color;em.opt.B;em.opt.Rfloatz? Redshiftsrc.redshiftfloatnullablerecnoRecord 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.mains/gOptical morphology in the APM catalog (G1)src.class.starGalaxycharRmagAPM E plate magnitude (red)magphot.mag;em.opt.RfloatBmagAPM O plate magnitude (blue)magphot.mag;em.opt.BfloatARExtinction correction applied to Emagphys.absorptionfloatSepSeparation between radio and optical sourcesarcsecpos.angDistancefloatSpeakFIRST 20cm (1.4GHz) peak flux densitymJyphot.flux.density;em.radio.750-1500MHzdoubleSintIntegrated flux density from FIRSTmJyphot.flux.density;em.radio.750-1500MHzdoubleBMag? B band absolute magnitudemagphys.magAbs;em.opt.BfloatnullablelogL? Log radio luminosity in ergs/cm^2^/s/Hz (G2)log(mW.m**-2.Hz**-1)phys.luminosity;em.radiofloatnullableLumRat? K-corrected 5 GHz to 2500{AA} optical luminosity ratio (3)phot.flux;arith.ratiofloatnullablespFileFITS File with spectrum, in fits subdirectorymeta.notecharNotesNotes on the object (see ref.dat file)meta.notecharFIRSTLink to the FIRST Data (Cat. VIII/71)meta.ref.urlcharJ/ApJS/126/133/egalFBQS candidate list: AGNs and galaxiesrecnoRecord 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.mains/gOptical morphology in the APM catalog (G1)src.class.starGalaxycharRmagAPM E plate magnitudemagphot.mag;em.opt.RfloatBmagAPM O plate magnitudemagphot.mag;em.opt.Bfloat(B-R)The O-E colormagphot.color;em.opt.B;em.opt.RfloatARExtinction correction applied to Emagphys.absorptionfloatSepSeparation between radio and opticalarcsecpos.angDistancefloatSpeakFIRST 20cm (1.4GHz) peak flux densitymJyphot.flux.density;em.radio.750-1500MHzdoubleSintIntegrated flux density from FIRSTmJyphot.flux.density;em.radio.750-1500MHzdoubleBMag? B band absolute magnitudemagphys.magAbs;em.opt.BfloatnullablelogL? Log radio luminosity in ergs/cm^2^/s/Hz (G2)log(mW.m**-2.Hz**-1)phys.luminosity;em.radiofloatnullableLumRat? K-corrected 5 GHz to 2500{AA} optical luminosity ratio (3)phot.flux;arith.ratiofloatnullablez? Redshiftsrc.redshiftfloatnullableNotesNotes on the object (see ref.dat file)meta.notecharFIRSTLink to the FIRST Data (Cat. VIII/71)meta.ref.urlchar