J/MNRAS/438/1149ivo://CDS.VizieR/J/MNRAS/438/1149doi:10.26093/cds/vizier.74381149CDSGurkan G.Hardcastle M.J.Jarvis M.J.2024-08-07T20:12:52Z2015-02-04T14:15:56ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiinfrared-photometryWe present an analysis of four complete samples of radio-loud active galactic nucleus (AGN; 3CRR, 2Jy, 6CE and 7CE) using near- and mid-IR data taken by the Wide-field Infrared Survey Explorer (WISE). The combined sample consists of 79 quasars and 273 radio galaxies, and covers a redshift range 0.003<z<3.395. The dichotomy in the mid-IR properties of low- and high-excitation radio galaxies (LERGs and HERGs) is analysed for the first time using large complete samples. Our results demonstrate that a division in the accretion modes of LERGs and HERGs clearly stands out in the mid-IR-radio plane (L_22{mu}m_=5x10^43^erg/s). This means that WISE data can be effectively used to diagnose accretion modes in radio-loud AGN. The mid-IR properties of all objects were analysed to test the unification between quasars and radio galaxies, consistent with earlier work, and we argue that smooth torus models best reproduce the observation. Quasars are found to have higher mid-IR luminosities than radio galaxies. We also studied all the sources in the near-IR to gain insights into evolution of AGN host galaxies. A relation found between the near-IR luminosity and redshift, well known in the near-IR, is apparent in the two near-IR WISE bands, supporting the idea that radio sources are hosted by massive elliptical galaxies that formed their stars at high redshifts and evolved passively thereafter. Evaluation of the positions of the sample objects in WISE colour-colour diagrams shows that widely used WISE colour cuts are not completely reliable in selecting AGN.2014MNRAS.438.1149Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/438/1149CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/18 : 6C Survey of radio sources I. (Baldwin+ 1985)J/MNRAS/216/173 : Bright extragalactic radio sources at 2.7 GHz (Wall+, 1985)J/A+AS/110/419 : 7C: survey of radio sources (Visser+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/438/1149https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/438/1149http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/438/1149https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/438/1149https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/438/1149http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/438/1149GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/438/1149/samples (WISE magnitudes of the samples 2Jy, 3CR, 6CE, and 7CE)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/438/1149/samples?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/438/1149/samples?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/438/1149/samples?GETtext/xml+votable180.050000true6.4548181-26.03683810.0055555555555555565/1215 6/244-245 767 928 936-937 939 942-943 946 1129 1521 1701 2052 2063 2111 2136 2225 2227 2245 2249 2292 2304 2306 2308 2311-2313 2315 2317-2318 2321-2324 2340 2402 2414 2569 2704 2866 2949 2951 3803 4014 4088 4285 4303 4324 4341 4352 4366 4376 4629 4649 4822 4825-4827 4829-4831 4835 4837 4848-4850 4852 4854-4857 5027 5032 5034 5063 5082 5086-5087 5103 5116 5118 5130 5243 5284 5311 5319 5332-5333 5335 5355-5357 5369 5371 5391-5392 5396 5399 5405 5411 5413 5435 5439-5440 5514 5553 5617 5671 5675 5692 5706 5758 5763 5765 5771 5794 5806 5817 6075 6417-6419 6422 6430-6431 6536 6618 6889 7061 7349 7508 7682 7763 7888 7925 7959 8003 8017 8043 8116 8152 8528 8555 8626 8644 8675 8705 8809 8989 9009 9230 9252 9273 9443 9468 9633 9655 9992 10004 10052 10217 10288 10355 10374 10432 10485 10529 10601 10743 10774 10780-10781 10787 10824 10839 10877 10880-10881 10888 10896 10925 11073 11259 11365 11377 11408 11512 11551 11652 11667 11874 12010 12045 12047 12241 12593 12684 12796 13120 13455 13564 13663 13707 13855 14858 15045 15064 15067 15909 16189 16221 16301 16509 16764 17443 17979 18065 18365 18387 18683 18895 19321 19325 19432 19543 19664 19745 19842 19857 19935 20030 20099 20111 20355 21588 22364 22452 22501 22505 23167 23281 23469 23476 23529 24023 24116 24247 24615 25472 25743 26292 27382 27514 27765 27773 27872 27934 27955 28063 28249 28279 28540 28574 28621 28628 28632 28638 28648 28656 28661 28666 29715 30140 31346 31352 31509 31940 31951 32059 32322 32394 32892 33010 34264 34669 35383 35434 36100 36431 36595 39079 39087 39658 40141 40777 41057 42060 43417 45763 45823 46101 46512 47107 47325 47636 48501 48529 486148.157980699529898e-21 6.513807192489934e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/438/1149?format=asciiInfrareddefaultJ/MNRAS/438/1149/samplesWISE magnitudes of the samples 2Jy, 3CR, 6CE, and 7CESimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetSet: 2Jy, 3CR, 6CE, or 7CEmeta.id;meta.datasetcharNameSource namemeta.id;meta.maincharzRedshiftsrc.redshiftfloat[3.4]3.4um magnitude (Vega)magphot.mag;em.IR.3-4umfloate_[3.4]rms uncertainty on [3.4]magstat.errorfloat[4.6]4.6um magnitude (Vega)magphot.mag;em.IR.4-8umfloate_[4.6]? rms uncertainty on [4.6]magstat.errorfloatnullable[12]? 12um magnitude (Vega)magphot.flux.density;em.IR.8-15umfloatnullablee_[12]? rms uncertainty on [12]magstat.errorfloatnullable[22]? 22um magnitude (Vega)magphot.flux.density;em.IR.15-30umfloatnullablee_[22]? rms uncertainty on [22]magstat.errorfloatnullableF3.4[0.00002/0.191]? WISE/W1 flux at 3.4umJyphot.mag;em.IR.3-4umfloatnullablee_F3.4? rms uncertainty on F3.4Jystat.errorfloatnullableF4.6[0.00002/0.186]? WISE/W2 flux at 4.6umJyphot.mag;em.IR.4-8umfloatnullablee_F4.6? rms uncertainty on F4.6Jystat.errorfloatnullableF12[0.0001/0.690]? WISE/W3 flux at 12umJyphot.flux.density;em.IR.8-15umfloatnullablee_F12? rms uncertainty on F12Jystat.errorfloatnullableF22[0.0009/2.873]? WISE/W4 flux at 22umJyphot.flux.density;em.IR.15-30umfloatnullablee_F22? rms uncertainty on F22Jystat.errorfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main