J/ApJ/660/167ivo://CDS.VizieR/J/ApJ/660/167doi:10.26093/cds/vizier.16600167CDSDonley J.L.Rieke G.H.Perez-Gonzalez P.G.Rigby J.R.Alonso-Herrero A.2017-06-22T14:28:54Z2009-04-28T17:57:25ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesradio-sourcesmillimeter-astronomysubmillimeter-astronomyWe define a sample of 62 galaxies in the Chandra Deep Field-North whose Spitzer IRAC SEDs exhibit the characteristic power-law emission expected of luminous AGNs. We study the multi-wavelength properties of this sample and compare the AGNs selected in this way to those selected via other Spitzer color-color criteria. Only 55% of the power-law galaxies are detected in the X-ray catalog at exposures of >0.5Ms, although a search for faint emission results in the detection of 85% of the power-law galaxies at the >=2.5sigma detection level. Most of the remaining galaxies are likely to host AGNs that are heavily obscured in the X-ray. Because the power-law selection requires the AGNs to be energetically dominant in the near- and mid-infrared, the power-law galaxies comprise a significant fraction of the Spitzer-detected AGN population at high luminosities and redshifts. The high 24um detection fraction also points to a luminous population. The power-law galaxies comprise a subset of color-selected AGN candidates.2007ApJ...660..167Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/660/167CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/122/2810 : Chandra Deep Field North Survey. V. (Brandt+, 2001)J/AJ/124/2351 : Chandra Deep Field North survey. XII (Bauer+, 2002)J/AJ/126/539 : The Chandra Deep Fields North and South (Alexander+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/660/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/660/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/660/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/660/167https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/660/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/660/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/660/167/table1 (Power-law galaxy sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/660/167/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/660/167/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/660/167/table1?GETtext/xml+votable180.050000true188.856583362.26928060.0055555555555555566/11230 11252https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/660/167?format=asciiX-rayRadiodefaultJ/ApJ/660/167/table1Power-law galaxy samplel_qLimit flag on qmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCDFNCDFN number, [DRP2007] NNNNN in Simbadmeta.id;meta.mainintPchi{chi}^2^ probability for power-law fit (see section 3 of paper)stat.fit.chi2floatalphaIRAC spectral index (f({nu}){prop.to}{nu}^alpha^)spect.indexfloatz? Redshiftsrc.redshiftfloatnullablee_z? rms uncertainty on zstat.error;src.redshiftfloatnullablel_F24umLimit flag on F24ummeta.code.errorcharF24um? 24um flux densityuJyphot.flux.density;em.IR.15-30umfloatnullablel_F1.4GLimit flag on F1.4Gmeta.code.errorcharF1.4G1.4GHz flux densityuJyphot.flux.density;em.radio.750-1500MHzfloatl_FXLimit flag on FXmeta.code.errorcharFX0.5-8keV X-ray fluxmW.m**-2phot.flux;em.X-raydoublel_logLXLimit flag on logLXmeta.code.errorcharlogLX? X-ray luminosity in 0.5-8keVlog(1e-07W)phys.luminosity;em.X-rayfloatnullableExpX-ray exposure timestime.duration;obs.exposure;em.X-raydoublethetaX-ray off-axis anglearcmininstr.offsetfloatq? Flux ratio, log(F24um/F1.4G)phot.flux;arith.ratiofloatnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainJ/ApJ/660/167/table5TemplatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintArp.wThe Arp 220 template wavelengthumem.wldoubleArp.FThe Arp 220 template flux densityJyphot.fluxdoubleIRAS.w? The IRAS 17208-0014 template wavelengthumem.wldoublenullableIRAS.F? The IRAS 17208-0014 template flux densityJyphot.fluxdoublenullableMrk.w? The Mrk 273 template wavelengthumem.wldoublenullableMrk.F? The Mrk 273 template flux densityJyphot.fluxdoublenullable