Infrared-faint radio sources redshifts J/MNRAS/484/1021 ivo://CDS.VizieR/J/MNRAS/484/1021 doi:10.26093/cds/vizier.74841021 CDS Orenstein B.J. Collier J.D. Norris R.P. 2024-08-19T20:16:26Z 2022-10-18T12:48:30Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxies redshifted radio-continuum-emission infrared-sources Infrared-faint radio sources (IFRSs) are an important class of high-redshift active galaxy, and potentially important as a means of discovering more high-redshift radio sources, but only 25 IFRSs had redshifts prior to this paper. Here we increase the number of IFRSs with known spectroscopic redshifts, by a factor of about 5, to 131, with redshifts up to z=4.387, and a median redshift of z=2.68. The IFRS redshift distribution overlaps with the high-z radio galaxy (HzRG) redshift distribution but is significantly narrower, suggesting that the IFRSs are a subset of the larger class of HzRGs. We also confirm and measure the proposed correlation between redshift and 3.6{mu}m flux density, making it possible to use this correlation to find even higher redshift radio sources. Many more high-redshift sources are probably present in existing radio survey catalogues. 2019MNRAS.484.1021O https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/484/1021 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) II/328 : AllWISE Data Release (Cutri+ 2013) V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/484/1021 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/484/1021 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/484/1021 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/484/1021 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/484/1021 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/484/1021 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/484/1021/table4 (The large radio sources) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/484/1021/table4? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/484/1021/table4? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/484/1021/table4? 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28391-28392 28396 28404 28423-28424 28429 28444 28446 28449 28454 28458 28460 28468 28471 28474 28481 28483 28493 28501 28505 28528-28529 28536 28538 28540 28544 28553 28556 28559 28575 28577 28581 28583 28589-28590 28595-28596 28602 28606 28610-28611 28620 28622-28623 28628 28640 28645 28647 28652 28660-28661 28663-28664 28666 28671 30043 31294 31355 31380 31387 31391 31405 31424 31427 31433-31434 31439 31442 31444 31451 31454 31456 31464 31468 31471 31478 31486 31535 31551 31617 31628 31631 31645 31657 31661 31664 31673-31674 31686 31704-31705 31718 31721 31723 31725-31726 31729 31735 32391 32394 32397 32417 32422 32425 32443-32445 32459 32462 32484 32486 32687 36724 36765 36778 36785-36786 36793 36796 36800 36810 36843 36847 36857 40959 45039 49128 9.932213363424795e-25 5.842484042127199e-20 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/484/1021?format=ascii Infrared Radio default J/MNRAS/484/1021/table4 The large radio sources SimbadName Simbad column added by the CDS meta.id char nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int ID [1/2519] Unique object ID from 1-2519 meta.id;meta.main int RAJ2000 Right ascension (J2000) (1) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) (1) deg pos.eq.dec;meta.main S20cm NVSS 20cm radio flux density (Condon et al. 1998AJ....115.1693C, Cat. VIII/65) mJy phot.flux.density;em.radio.750-1500MHz float S3.4um AllWISE 3.4um infrared flux density (Cutri et al. 2014yCat.2328....0C, Cat. II/328) uJy phot.flux.density;em.IR.3-4um float z SDSS DR12 spectroscopic redshift (Alam et al. 2015ApJS..219...12A, Cat. V/147) src.redshift double e_z Error on z stat.error;src.redshift double