J/ApJS/95/1ivo://CDS.VizieR/J/ApJS/95/1doi:10.26093/cds/vizier.20950001CDSElvis M.Wilkes B.J.McDowell J.C.Green R.F.Bechtold J.,Willner S.P.Oey M.S.Polomski E.Cutri R.1999-02-27T12:07:46Z1999-02-27T13:07:20ZCDS support team

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

cds-question@unistra.frquasarsradio-sourcesx-ray-sourcesultraviolet-astronomyinfrared-sourcesWe present an atlas of the spectral energy distributions (SEDs) of normal, non-blazar, quasars over the whole available range (radio to 10 keV X-rays) of the electromagnetic spectrum. The primary (UVSX) sample includes 47 quasars for which the spectral energy distributions include X-ray spectral indices and UV data. Of these, 29 are radio quiet, and 18 are radio loud. The SEDs are presented both in figures and in tabular form, with additional tabular material published on CD-ROM. Previously unpublished observational data for a second set of quasars excluded from the primary sample are also tabulated. The effects of host galaxy starlight contamination and foreground extinction on the UVSX sample are considered and the sample is used to investigate the range of SED properties. Of course, the properties we derive are influenced strongly by the selection effects induced by quasar discovery techniques. We derive the mean energy distribution (MED) for radio-loud and radio-quiet objects and present the bolometric corrections derived from it. We note, however, that the dispersion about this mean is large (~one decade for both the infrared and ultraviolet components when the MED is normalized at the near-infrared inflection). At least part of the dispersion in the ultraviolet may be due to time variability, but this is unlikely to be important in the infrared. The existence of such a large dispersion indicates that the MED reflects only some of the properties of quasars and so should be used only with caution.1994ApJS...95....1Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/95/1CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/95/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/95/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/95/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/95/1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/95/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/95/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-rayUVInfraredRadiodefaultJ/ApJS/95/1/table3aAdopted X-ray power-law fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharl_F0.2Limit flag for F2 fluxmeta.code.errorcharF0.2? Flux at 0.2 KeVuJyphot.flux;em.X-rayfloatnullableE_F0.2? Error in F2 flux (upper limit)uJystat.errorfloatnullablee_F0.2? Error in F2 flux (lower limit)uJystat.errorfloatnullablealpha10Energy index at 1 keVstat.fit.paramfloatE_alpha10? Error in energy index alpha10 (upper limit)stat.errorfloatnullablee_alpha10? Error in energy index alpha10 (lower limit)stat.errorfloatnullableF10Flux at 1 keV or lower limit of the flux if intervaluJyphot.flux;em.X-rayfloatn_F10Separation when interval of flux at 1 keVmeta.notecharF10u? Upper limit of the flux when intervaluJyphot.flux;em.X-rayfloatnullableE_F10? Error in F10 flux (upper limit)uJystat.errorfloatnullablee_F10? Error in F10 flux (lower limit)uJystat.errorfloatnullableRefReference (1)meta.refintalpha40? Energy index at 40 keVstat.fit.paramfloatnullableE_alpha40? Error in energy index alpha40 (upper limit)stat.errorfloatnullablee_alpha40? Error in energy index alpha40 (lower limit)stat.errorfloatnullablel_F40Limit flag on F40 fluxmeta.code.errorcharF40? Flux at 4 keV or lower limit of the flux if intervaluJyphot.flux;em.X-rayfloatnullablen_F40Separation when interval of flux at 4 keVmeta.notecharF40u? Upper limit of the flux F40 when intervaluJyphot.flux;em.X-rayfloatnullablee_F40? rms uncertainty on F40 fluxuJystat.errorfloatnullableref2? Reference for F40 fluxmeta.refintnullableJ/ApJS/95/1/table3bObservational details for new X-ray power-law fitsGainGaininstr.paramfloatPHA? PHA channelsmeta.codecharCounts? Fit countsstat.fit.chi2intnullableDateObservation datetime.epochcharExpExposure timestime.duration;obs.exposureintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharSeqSequence numbermeta.idintRate? Count ratect/sphot.count;em.X-rayfloatnullablealpha? Spectral indexspect.indexfloatnullableNH? Hydrogen column density1e+20cm**-2phys.columnDensityfloatnullableki2? Ki2 (1)stat.fit.chi2floatnullableJ/ApJS/95/1/tablea1Adopted continuum bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaNominal Wavelengthnmem.wlfloatRange1Wavelength range (lower value)nmem.wl.effectivefloatRange2Wavelength range (upper value)nmem.wl.effectivefloatJ/ApJS/95/1/tablea2IUE continuum bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQSO namemeta.id;meta.maincharObsObservation date, written "MM/YY"time.epochcharExp1First exposuremeta.id;obs.exposurecharExp2Second exposuremeta.id;obs.exposurecharLambdaLambda (rest)nmem.wl;phys.atmol.transitionfloatlog(nu)Observed frequencylog(Hz)em.freqfloatlog(nuFnu)? Flux in the observed framelog(Jy.Hz)phot.flux.density;em.radiofloatnullablee_log(nuFnu)? rms uncertainty on log(nuFnu)log(Jy.Hz)stat.errorfloatnullableJ/ApJS/95/1/tablea3Optical continuum measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQSO namemeta.id;meta.maincharDateObservation datetime.epochcharExpExposuremeta.id;obs.exposurecharLambdaLambda (rest)nmem.wl;phys.atmol.transitionintlog(nu)Observed frequencylog(Hz)em.freqfloatlog(nuFnu)? Flux in the observed framelog(Jy.Hz)phot.flux.density;em.radiofloatnullablee_log(nuFnu)? rms uncertainty on log(nuFnu)log(Jy.Hz)stat.errorfloatnullableJ/ApJS/95/1/tablea4Adopted extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefExtinction law reference (1)meta.refcharlog(nu)Frequencylog(Hz)em.freqfloatR(nu)Extinction relative to extinction at V (A(nu)/A(V))phys.absorptionfloatJ/ApJS/95/1/tablea5Starlight TemplaterecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlog(nu)Frequencylog(Hz)em.freqfloatlog(nuLnu)Energy distribution of starlight template used for host galaxy subtraction, normalized at Vlog(Hz.solLum)stat.paramfloatJ/ApJS/95/1/tableb1Observed energy distributionNameQuasar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlog(nu0)Frequency nu0log(Hz)em.freqfloatlog(nu1)Frequency nu1log(Hz)em.freqfloatlog(nu2)Frequency nu2log(Hz)em.freqfloatl_log(nuFnu)Limit flag on log(nuFnu)meta.code.errorcharlog(nuFnu)Fluxlog(Jy.Hz)phot.flux.density;em.radiofloatE_log(nuFnu)? Error on lognuFnu (upper limit)log(Jy.Hz)stat.errorfloatnullablee_log(nuFnu)? Error on lognuFnu (lower limit)log(Jy.Hz)stat.errorfloatnullableDateObservation date "DD/MM/YY" partially filledtime.epochcharAper? Aperturearcsecinstr.fovfloatnullableFiltFilter or detectormeta.code;instr.filtercharInstIntrument or telescopemeta.id;instrcharRefReferencesmeta.refcharJ/ApJS/95/1/table6Near-infrared photometryTelTelescopemeta.id;instr.telcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharJmag? J (1.24um) magnitudemagphot.mag;em.IR.Jfloatnullableu_JmagUncertainty flag on J magnitudemeta.code.errorchare_Jmag? rms uncertainty on J magnitudemagstat.errorfloatnullableHmag? H (1.63um) magnitudemagphot.mag;em.IR.Hfloatnullableu_HmagUncertainty flag on H magnitudemeta.code.errorchare_Hmag? rms uncertainty on H magnitudemagstat.errorfloatnullableKmag? K (2.19um) magnitudemagphot.mag;em.IR.Kfloatnullableu_KmagUncertainty flag on K magnitudemeta.code.errorchare_Kmag? rms uncertainty on K magnitudemagstat.errorfloatnullablel_3.4maglimit flag on 3.4um magnitudemeta.code.errorchar3.4mag? 3.4um magnitude (Delta{lambda}=0.2um)magphot.mag;em.IR.3-4umfloatnullableu_3.4magUncertainty flag on 3.4um magnitudemeta.code.errorchare_3.4mag? rms uncertainty on 3.4mag or error upper limit if e(3.4mag)l not blankmagstat.errorfloatnullablee(3.4mag)l? Error in 3.4mag (lower limit)magstat.errorfloatnullableL'mag? L' (3.79um) magnitudemagphot.mag;em.IR.3-4umfloatnullablee_L'mag? rms uncertainty on L' magnitudemagstat.errorfloatnullableDateObservation datetime.epochcharBeamBeam sizearcsecphys.angSize;instr.beamintNote[ac ] When a, a 5" aperture was used for the 3.4um band measurement. When c: possible clouds, uncertainties believed adequatemeta.notecharJ/ApJS/95/1/table9Radio fluxesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharl_NuLimit flag on numeta.code.errorcharNu? FrequencyGHzem.freqdoublenullablel_ScoreLimit flag on Scoremeta.code.errorcharScore? Core flux (1)mJyphot.flux.density;em.radiodoublenullablee_Score? rms uncertainty on ScoremJystat.errorfloatnullablel_SextLimit flag on Sextmeta.code.errorcharSext? Extended flux (1)mJyphot.flux.density;em.radiodoublenullablee_Sext? rms uncertainty on SextmJystat.errorfloatnullableDateObservation date "MM/YY" (2)time.epochcharu_Date[?] Uncertainty flag on year of observationmeta.code.errorcharTelTelescope (3)meta.id;instr.telcharl_ResLimite flag on resolutionmeta.code.errorcharRes? Resolutionarcsecpos.angResolutionfloatnullableu_Res[?] Uncertainty flag on resolutionmeta.code.errorcharRefReferences (4)meta.refintJ/ApJS/95/1/table10Millimeter fluxesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharlambdaLinemmem.wlfloatl_SLimit flag on fluxmeta.code.errorcharSFlux at lambdamJyphot.flux.density;em.radiodoublee_S? rms uncertainty on fluxmJystat.errorfloatnullableDateObsercation dateyrtime.epochintTelTelescopemeta.id;instr.telcharRefReferences (1)meta.refintJ/ApJS/95/1/table11Magnitude scale zero pointsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandBandinstr.bandpasscharLambdaReference lambdaumem.wlfloatZeropt1Zero point (Vega) (1)Jyphot.mag;arith.zpfloatZeropt2Zero point (alpha = 1) (1)Jyphot.mag;arith.zpintJ/ApJS/95/1/table12Adopted host galaxy parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharlogLH band luminosity (1)log(solLum)phys.luminosityfloatE_logLError in logL (upper limit)log(solLum)stat.errorfloate_logLError in logL (lower limit)log(solLum)stat.errorfloatRadHalf-light radius (1)kpcphys.size.radiusfloatRefReferences (2)meta.refint