J/MNRAS/462/2934ivo://CDS.VizieR/J/MNRAS/462/2934doi:10.26093/cds/vizier.74622934CDSVernstrom T.S.Scott D.Wall J.V.Condon J.J.Cotton W.D.,Kellermann K.I.Perley R.A.2024-08-16T20:18:30Z2016-08-30T08:39:28ZCDS support team

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

cds-question@unistra.frsurveysradio-sourcesastronomical-object-identificationredshiftedThis is the second of two papers describing the observations and source catalogues derived from sensitive $3$-GHz images of the Lockman Hole North using the Karl G. Jansky Very Large Array. We describe the reduction and cataloguing process, which yielded an image with 8-arcsec resolution and instrumental noise of {sigma}_n=1.01uJy/beam rms (before primary beam corrections) and a catalogue of 558 sources detected above 5{sigma}_n. We include details of how we estimate source spectral indices across the 2GHz VLA bandwidth, finding a median index of -0.76+/-0.04. Stacking of source spectra reveals a flattening of spectral index with decreasing flux density. We present a source count derived from the catalogue. We show a traditional count estimate compared with a completely independent estimate made via a P(D) confusion analysis, and find very good agreement. Cross-matches of the catalogue with X-ray, optical, infrared, radio, and redshift catalogues are also presented. The X-ray, optical and infrared data, as well as AGN selection criteria allow us to classify 10 per cent as radio-loud AGN, 28 percent as radio-quiet AGN, and 58 per cent as star-forming galaxies, with only 4 per cent unclassified.2016MNRAS.462.2934Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/2934CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/290 : SWIRE Photometric Redshift Catalogue (Rowan-Robinson+, 2008)II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)V/139 : SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)J/ApJS/185/433 : SWIRE/Chandra survey in Lockman Hole Field (Wilkes+, 2009)J/ApJ/714/1305 : The Deep SWIRE Field (DSF) IV. (Strazzullo+, 2010)J/AJ/136/1889 : 20cm observations of deep Swire Field (Owen+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/2934https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/2934http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/2934https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/462/2934https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/462/2934http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/462/2934GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/462/2934/cat3ghz (3GHz source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/2934/cat3ghz?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/2934/cat3ghz?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/2934/cat3ghz?GETtext/xml+votable180.050000true161.167541758.99197220.005555555555555556Cone search capability for table J/MNRAS/462/2934/catcrx (X-ray, optical, IR, and radio cross matches)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?GETtext/xml+votable180.050000true161.167541758.99197220.0055555555555555566/60772.1534725313611987e-25 6.187473460275397e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/462/2934?format=asciiRadiodefaultJ/MNRAS/462/2934/cat3ghz3GHz source catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIAU catalogue designation (TV16JHHMMSSs+DDMMSS)meta.id;phys.atmol.configuration;meta.tablecharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Uncertainty in Right Ascensionsstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Uncertainty in Declinationarcsecstat.error;pos.eq.decfloatnueffEffective frequency in wideband imageGHzem.freqfloatPBPrimary beam correction factorinstr.paramfloatSpeakPeak flux density (1)uJy/beamphot.flux.densityfloatSNRSignal-to-noise ratiostat.snrfloatStotTotal corrected flux densityuJyphot.flux.densityinte_StotUncertainty in total flux densityuJystat.errorfloatfsize[0/4] Size flag (2)meta.codeintl_maj[<] Axis is less than 2sigma > the beammeta.code.errorcharmajFitted beam-convolved major axis sizearcsecphys.angSizefloate_majUncertainty in major axisarcsecstat.errorfloatmajde? Deconvolved major axis sizearcsecphys.angSizefloatnullablee_majde? Uncertainty in deconvolved major axisarcsecstat.errorfloatnullablel_min[< ] Axis is less than 2sigma > the beammeta.code.errorcharminFitted beam-convolved minor axis sizearcsecphys.angSize;meta.modelledfloate_minUncertainty in minor axisarcsecstat.error;stat.minfloatminde? Deconvolved minor axis sizearcsecphys.angSizefloatnullablee_minde? Uncertainty in deconvolved minor axisarcsecstat.errorfloatnullablePA? Fitted position angledegpos.posAng;meta.modelledintnullableSp+Index? Spectral index from 2 to 4GHz (3)spect.indexfloatnullablee_Sp+Index? Spectral index uncertaintystat.errorfloatnullableJ/MNRAS/462/2934/catcrxX-ray, optical, IR, and radio cross matchesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIAU catalogue designation (TV16JHHMMSSs+DDMMSS)meta.id;phys.atmol.configuration;meta.tablecharS3ghz3GHz total flux densityuJyphot.flux.density;em.radio.1500-3000MHzintRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainXrayBr? Chandra 0.3-8.0keV flux (Wilkes et al., 2009, Cat. J/ApJS/185/433)mW.m**-2phot.flux;em.X-raydoublenullableXrayH? Chandra 2.5-8.0keV flux (Wilkes et al., 2009, Cat. J/ApJS/185/433)mW.m**-2phot.flux;em.X-raydoublenullableumagS? SDSS DR9 u magnitude (AB) (Ahn et al., 2012ApJS..203...21A, Cat. V/139)magphot.mag;em.opt.UfloatnullablegmagS? SDSS DR9 g magnitude (AB) (Ahn et al., 2012ApJS..203...21A, Cat. V/139)magphot.mag;em.opt.BfloatnullablermagS? SDSS DR9 r magnitude (AB) (Ahn et al., 2012ApJS..203...21A, Cat. V/139)magphot.mag;em.opt.RfloatnullableimagS? SDSS DR9 i magnitude (AB) (Ahn et al., 2012ApJS..203...21A, Cat. V/139)magphot.mag;em.opt.IfloatnullablezmagS? SDSS DR9 z magnitude (AB) (Ahn et al., 2012ApJS..203...21A, Cat. V/139)magphot.mag;em.opt.IfloatnullableumagK? KPNO u magnitude (AB) (Gonzalez-Solares et al., 2011MNRAS.416..927G)magphot.mag;em.opt.UfloatnullablegmagK? KPNO g magnitude (AB) (Gonzalez-Solares et al., 2011MNRAS.416..927G)magphot.mag;em.opt.RfloatnullablermagK? KPNO r magnitude (AB) (Gonzalez-Solares et al., 2011MNRAS.416..927G)magphot.mag;em.opt.RfloatnullableimagK? KPNO i magnitude (AB) (Gonzalez-Solares et al., 2011MNRAS.416..927G)magphot.mag;em.opt.IfloatnullableJmag? UKIDSS DR9 J magnitude (Lawrence et al., 2012, Cat. II/314)magphot.mag;em.IR.JfloatnullableKmag? UKIDSS DR9 K magnitude (Lawrence et al., 2012, Cat. II/314)magphot.mag;em.IR.KfloatnullableS3.6umSW? Spitzer/SWIRE 3.6um flux (Lonsdale et al., 2003PASP..115..897L)uJyphot.mag;em.IR.3-4umfloatnullableS4.5umSW? Spitzer/SWIRE 4.5um flux (Lonsdale et al., 2003PASP..115..897L)uJyphot.mag;em.IR.4-8umfloatnullableS5.8umSW? Spitzer/SWIRE 5.8um flux (Lonsdale et al., 2003PASP..115..897L)uJyphot.flux.density;em.IR.4-8umfloatnullableS8.0umSW? Spitzer/SWIRE 8.0um flux (Lonsdale et al., 2003PASP..115..897L)uJyphot.flux.density;em.IR.8-15umfloatnullableS3.6umSE? Spitzer/SERVS 3.6um flux (Mauduit et al., 2012PASP..124..714M)uJyphot.mag;em.IR.3-4umfloatnullableS4.5umSE? Spitzer/SERVS 4.5um flux (Mauduit et al., 2012PASP..124..714M)uJyphot.mag;em.IR.4-8umfloatnullableS24um? Spitzer/MIPS 24um flux (Lonsdale et al., 2003PASP..115..897L)uJyphot.flux.density;em.IR.15-30umfloatnullableS250um? Herschel/Hermes DR3 250um flux (Oliver et al., 2012, Cat. VIII/95)uJyphot.flux.density;em.mm.750-1500GHzfloatnullableS350um? Herschel/Hermes DR3 350um flux (Oliver et al., 2012, Cat. VIII/95)uJyphot.flux.density;em.mm.750-1500GHzfloatnullableS500um? Herschel/Hermes DR3 500um flux (Oliver et al., 2012, Cat. VIII/95)uJyphot.flux.density;em.mm.400-750GHzfloatnullableS20cm? VLA 1.4GHz flux (Owen & Morrison, 2008, Cat. J/AJ/136/1889)uJyphot.flux.density;em.radio.750-1500MHzfloatnullableS90cm? VLA 325MHz flux (Owen et al., Cat. J/AJ/137/4846)uJyphot.flux.density;em.radio.200-400MHzintnullablezsp? Spectroscopic redshift (Rowan-Robinson et al., 2008, Cat. II/290; Strazzullo et al., Cat. J/ApJ/714/1305)src.redshiftfloatnullablezph? Photometric redshift (Rowan-Robinson et al., 2008, Cat. II/290; Strazzullo et al., Cat. J/ApJ/714/1305)src.redshiftfloatnullable