J/A+A/472/805ivo://CDS.VizieR/J/A+A/472/805doi:10.26093/cds/vizier.34720805CDSRichards A.M.S.Muxlow T.W.B.Beswick R.Allen M.G.Benson K.,Dickson R.C.Garrett M.A.Garrington S.T.Gonzalez-Solarez E.,Harrison P.A.Holloway A.J.Kettenis M.M.Laing R.A.Richards E.A.,Thrall H.van Langevelde H.J.Walton N.A.Wilkinson P.N.Winstanley N.2007-11-11T15:49:21Z2007-11-11T16:45:32ZCDS support team

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

cds-question@unistra.frradio-sourcesx-ray-sourcesactive-galactic-nucleiThis catalogue lists the properties of 62 radio sources in the Hubble Deep Field (North) and Flanking Fields (HDFN) which were also detected by the Chandra X-ray satellite (see Alexander et al., 2003, Cat. <J/AJ/126/539>, file cdfn). This includes 55/92 sources brighter than 40uJy detected by MERLIN+VLA at 1.4GHz (see Muxlow et al., 2005, Cat. <J/MNRAS/358/1159>, Richards, 2000, Cat. <J/ApJ/533/611>); some were also detected by the VLA at 8.4GHz (Richards et al., 1998AJ....116.1039R) including 7 selected at this frequency. The cross-matching, derivation of properties and analysis are described fully in the paper. The radio data have a positional accuracy of 15 mas with respect to the ICRS (Muxlow et al., 2005, Cat. <J/MNRAS/358/1159>) but data using the GOODS HST ACS (Giavalisco et al., 2004, Cat. <II/261>) positions requires a shift of -342mas in Declination for alignment with the ICRS. We use measurements taken from the radio observations and from the literature to compile the flux densities, sizes and spectral/photon indices of the cross-matched radio+X-ray sources and their redshifts (where available), enabling us to derive the rest-frame luminosities. The 1.4-GHz detections are all resolved at 0.2-2arcsec resolution. The radio emission was classified using the source morphologies and radio spectral indices; optical and IR information was used as supporting evidence only. On this basis, starbursts outnumber radio AGN 3:1. The high-redshift starbursts have typical sizes of 5-10kpc and star formation rates of around 1000 Msun/yr, an order of magnitude more extended and intense than in the local universe. The X-ray sources are unresolved but their luminosity and spectral indices allows X-ray AGN and obscured (Type II) AGN to be identified (2004A&A...424..545P). In this way, we can distinguish between the origins of radio and X-ray emission from the same object. There is no obvious correlation between radio and X-ray luminosities nor spectral indices at z>1.3. About 70% of both the radio-selected AGN and the starburst samples were detected by Chandra. The X-ray luminosity indicates the presence of an AGN in at least half of the 45 cross-matched radio starbursts. Eleven of these are type-II AGN, of which 7 are at z>1.5. This distribution overlaps closely with the X-ray detected radio sources which were also detected by SCUBA. Almost all extended radio starbursts at z>1.3 host X-ray selected obscured AGN. The radio emission from most of these ultra-luminous objects is dominated by star formation although the highest redshift (z=4.424) source has a substantial AGN contribution. Star-formation appears to contribute less than 1/3 of their X-ray luminosity. Our results support the inferences from SCUBA and IR data, that at z>1.5, star formation is observably more extended and more copious, it is closely linked to AGN activity and it is triggered differently, compared with star formation at lower redshifts.2007A&A...472..805Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/472/805CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/126/539 : The Chandra Deep Fields North and South (Alexander+, 2003)J/MNRAS/358/1159 : Radio sources in HDF and HFF (Muxlow+, 2005)J/ApJ/533/611 : 1.4GHz survey in HDF region (Richards+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/472/805https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/472/805http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/472/805https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/472/805https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/472/805http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/472/805GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/472/805/table12 (Properties of radio-X-ray sources in and around the HDF(N) (table 1 and 2 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/472/805/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/472/805/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/472/805/table12?GETtext/xml+votable180.050000true189.02755333362.1642058330.0055555555555555566/11252https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/472/805?format=asciiX-rayRadiodefaultJ/A+A/472/805/table12Properties of radio-X-ray sources in and around the HDF(N) (table 1 and 2 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIAU-like name of radio sourcemeta.id;meta.maincharRAJ2000Right Ascension ICRSpos.eq.ra;meta.mainDEJ2000Declination ICRSpos.eq.dec;meta.mainS1.4GHzRadio Flux Density at 1.4 GHz (VLA)uJyphot.flux.density;em.radio.750-1500MHzfloatLAS? Largest Angular Size (MERLIN+VLA)arcsecphys.angSize;stat.maxfloatnullablel_R.SI[<>e] Flag on radio spectral index if it is a limit (<>) or an estimate (e) (see paper)meta.code.errorcharR.SIRadio spectral index between 1.4-8.4GHz (S varies as frequency^-R.SI^)spect.indexfloate_R.SIError in spectral index in low directionstat.errorfloatE_R.SIError in spectral index in high directionstat.error;stat.maxfloatn_z[sp] Redshift origin is photometric (p) or spectroscopic (s)meta.notecharz? Redshift of associated optical/IR sourcesrc.redshiftfloatnullablee_z? Error in Redshiftstat.error;src.redshiftfloatnullabler_zRedshift reference (Bibcode)meta.ref;pos.framecharR-XsepAngular separation of radio and X-ray peaksarcsecpos.angDistancefloat[ABB2003]X-ray source number in J/AJ/126/539/cdfnphot.count;em.X-rayintFXXray flux density 0.5-8.0 keV (Chandra)aW.m**-2phot.flux;em.X-rayfloatf_X.SI[<>e] Flag if X-ray photon index if it is a limit (<>) or an estimate (e) (see paper)meta.codecharX.SIX-ray photon index between 0.5-2, 2-8keV (F varies as Energy^-X.SI^)spect.indexfloate_X.SIError in photon index in low directionstat.errorfloatE_X.SIError in photon index in low directionstat.error;stat.maxfloatISO[I] Detection by ISO at 7 and/or 15um (1)meta.codecharSpitzer[S] Detection by Spitzer at 16um (1)meta.codecharSMMDetection by SCUBA at 850um (SMM) (1)meta.codecharL1.4GHz? Rest frame 1.4-GHz radio luminosityW/Hzphys.luminosity;em.radio.750-1500MHzdoublenullableL1.4lo? Lower bound to 1.4-GHz radio luminosityW/Hzphys.luminosity;em.radio.750-1500MHz;stat.mindoublenullableL1.4up? Upper bound to 1.4-GHz radio luminosityW/Hzphys.luminosity;em.radio.750-1500MHz;stat.maxdoublenullableRclassRadio source class: AGN, SB (Starburst), or U (Unknown)meta.code.classcharLX? Rest frame full-band X-ray luminosityWphys.luminosity;em.X-raydoublenullableLXlo? Rest frame full-band X-ray luminosity lower boundWphys.luminosity;em.X-raydoublenullableLXup? Rest frame full-band X-ray luminosity upper boundWphys.luminosity;em.X-raydoublenullableXclassX-ray characteristics of AGN (AGN-X) or obscured AGN (AGN-II)meta.code.classchar