J/MNRAS/383/479ivo://CDS.VizieR/J/MNRAS/383/479doi:10.26093/cds/vizier.73830479CDSMagliocchetti M.Andreani P.Zwaan M.A.2024-07-05T20:16:08Z2009-03-08T13:19:32ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesradio-sourcesThis paper analyses the radio properties of a subsample of optically obscured (R>=25.5) galaxies observed at 24um by the Spitzer Space Telescope within the First Look Survey. Ninety-six F24um>=0.35mJy objects out of 510 are found to have a radio counterpart at 1.4GHz, 610MHz or at both frequencies, respectively, down to ~40 and ~200uJy. IRAC photometry sets the majority of them in the redshift interval z~=[1-3] and allows for a broad distinction between active galactic nucleus (AGN) dominated galaxies (~47 per cent of the radio-identified sample) and systems powered by intense star formation (~13 per cent), the remaining objects being impossible to classify. The percentage of radio identifications is a strong function of 24-um flux: almost all sources brighter than F_24um_~2mJy are endowed with a radio flux at both 1.4GHz and 610MHz, while this fraction drastically decreases by lowering the 24-um flux level.2008MNRAS.383..479Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/383/479CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/125/2411 : SIRTF First-Look Survey (Condon+, 2003)J/A+A/424/371 : 1.4GHz First Look Survey (FLS) (Morganti+, 2004)J/AJ/131/2859 : Extragalactic First Look Survey: 24um data (Fadda+, 2006)J/MNRAS/376/1251 : 610MHz observations of Spitzer XFLS (Garn+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/383/479https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/383/479http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/383/479https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/383/479https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/383/479http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/383/479GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/383/479/table1 (Radio counterparts to R>25.5 Spitzer sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/383/479/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/383/479/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/383/479/table1?GETtext/xml+votable180.050000true258.7512559.9363890.0055555555555555565/2547 6/10183 10212-102146.772611666688002e-21 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/383/479?format=asciiInfraredRadiodefaultJ/MNRAS/383/479/table1Radio counterparts to R>25.5 Spitzer sourcesn_F1.4G[*] Note on radio flux (3)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharF24MIPS flux at 24um from Fadda et al. (2006, Cat. J/AJ/131/2859)mJyphot.flux.density;em.IR.15-30umfloatl_F3.6Limit flag on F3.6meta.code.errorcharF3.6IRAC flux at 3.6um (1)uJyphot.flux.density;em.IR.3-4umfloatl_F4.5Limit flag on F4.5meta.code.errorcharF4.5IRAC flux at 4.5um (1)uJyphot.mag;em.IR.4-8umfloatl_F5.8Limit flag on F5.8meta.code.errorcharF5.8IRAC flux at 5.8um (1)uJyphot.flux.density;em.IR.4-8umfloatl_F8Limit flag on F8meta.code.errorcharF8IRAC flux at 8um (1)uJyphot.flux.density;em.IR.8-15umfloatl_F1.4GLimit flag on F1.4Gmeta.code.errorcharF1.4GFlux at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatr_F1.4G[M] Reference for F1.4G (2)meta.ref;pos.framecharF610M? Flux at 610MHz from Garn et al. (2007, Cat. J/MNRAS/376/1251)mJyphot.flux.density;em.radio.400-750MHzfloatnullableClassClass (4)src.classcharzt[1/5] Likely redshift range (5)meta.codeintl_alphaLimit flag on alphameta.code.error;pos.eq.racharalpha? Radio spectral index (S({nu}){prop.to}{nu}^-{alpha}^)spect.index;em.radiofloatnullable_RARight ascension (derived from Name) for Eq=J2000degpos.eq.ra;meta.main_DEDeclination (derived from Name) for Eq=J2000degpos.eq.dec;meta.main