J/A+A/471/1105ivo://CDS.VizieR/J/A+A/471/1105doi:10.26093/cds/vizier.34711105CDSTasse C.Roettgering H.J.A.Best P.N.Cohen A.S.Pierre M.Wilman R.2007-11-04T19:07:41Z2007-11-04T20:03:33ZCDS support team

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

cds-question@unistra.frsurveysactive-galactic-nucleiradio-sourcesThe low-frequency radio survey of the XMM-Large Scale Structure (XMM-LSS) field aims to study the connection between the extragalactic radio source populations and their environment as traced by X-ray and optical emission. In this paper we present new radio observations of the XMM-LSS field carried out using the Giant Meterwave Radio Telescope at 240 and 610MHz. These observations complement the observations presented by Cohen at al. (2003, Cat. <J/ApJ/591/640>) and Tasse et al. (2006, Cat. <J/A+A/456/791>) at 74 and 325MHz with the Very Large Array. At 240 and 610MHz, we reach noise levels of ~2.5 and ~0.3mJy/beam, leading to the detection of 466 and 769 sources over 18.0 and 12.7 degree^2^ with resolutions of 14.7arcsec and 6.5arcsec respectively. Combining these data with the available source lists at 74, 325 (Tasse et al., 2006, Cat. <J/A+A/456/791>) and 1400MHz (NVSS), we build a multifrequency catalogue containing 1611 radio sources. We check for consistency of the astrometry and flux density estimates. We fit a simple synchrotron radiation model to the flux density measurements of the 318 radio sources being detected in at least 4 bands. While ~26% of them show signature of spectral ageing, ~6% show self absorption.2007A&A...471.1105Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/471/1105CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/591/640 : XMM-LSS low-frequency radio counterparts (Cohen+, 2003)J/A+A/439/413 : XMDS/VVDS 4{sigma} catalogue (Chiappetti+, 2005)J/A+A/456/791 : XMM-LSS field at 74 and 325MHz (Tasse+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/471/1105https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/471/1105http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/471/1105https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/471/1105https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/471/1105http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/471/1105GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/471/1105/table3 (The 240MHz source list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/471/1105/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/471/1105/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/471/1105/table3?GETtext/xml+votable180.050000true33.445875-2.94726390.005555555555555556Cone search capability for table J/A+A/471/1105/table4 (The 610MHz source list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/471/1105/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/471/1105/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/471/1105/table4?GETtext/xml+votable180.050000true34.069625-5.21518330.005555555555555556Cone search capability for table J/A+A/471/1105/table5 (Fitting parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/471/1105/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/471/1105/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/471/1105/table5?GETtext/xml+votable180.050000true34.08825-2.75548610.0055555555555555565/4420 4422-4423 4428-4429 6/17671 17677 17679 17684 17686-17687 17736 17738 17760 17762https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/471/1105?format=asciiRadiodefaultJ/A+A/471/1105/table3The 240MHz source listl_amajLimit flag on amajmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource Name (JHHMM.m+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RAarcsecstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DEarcsecstat.error;pos.eq.decfloatType[SMC] Source type: (S)ingle, (M)ultiple or (C)omponent of multiple sourcemeta.codecharSintTotal integrated flux density at 240MHzmJyphot.flux.density;em.radio.200-400MHzfloatnullablee_Sint? rms uncertainty on SintmJystat.errorfloatnullablen_Sint[*] *: flux calculated with pixel based methodmeta.notecharScompIntegrated flux density of individual Gaussian fitting component at 240MHz (table3) or 610MHz (table4)mJyphot.flux.density;em.radio.200-400MHzfloate_Scomprms uncertainty on ScompmJystat.errorfloatamajDeconvolved size of major axis, or the 2{sigma} upper limit if the source is unresolvedarcsecphys.angSizefloate_amaj? rms uncertainty on amajarcsecstat.errorfloatnullablel_aminLimit flag on aminmeta.code.errorcharamin? Deconvolved size of minor axis, or 2{sigma} upper limit if the source is unresolvedarcsecphys.angSizefloatnullablee_amin? rms uncertainty on aminarcsecstat.errorfloatnullablePA? Position angle of major axisdegpos.posAngfloatnullablee_PA? rms uncertainty on PAdegstat.errorfloatnullablel_SILimit flag on SImeta.code.errorcharSI? Spectral index, with respect to NVSS flux density (1.4GHz) (1)phot.flux.densityfloatnullableJ/A+A/471/1105/table4The 610MHz source listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource Name (JHHMM.m+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RAarcsecstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DEarcsecstat.error;pos.eq.decfloatType[SMC] Source type: (S)ingle, (M)ultiple or (C)omponent of multiple sourcemeta.codecharSintTotal integrated flux density at 610MHzmJyphot.flux.density;em.radio.400-750MHzfloatnullablee_Sint? rms uncertainty on SintmJystat.errorfloatnullablen_Sint[*] *: flux calculated with pixel based methodmeta.notecharScompIntegrated flux density of individual Gaussian fitting component at 240MHz (table3) or 610MHz (table4)mJyphot.flux.density;em.radio.400-750MHzfloate_Scomprms uncertainty on ScompmJystat.errorfloatl_amajLimit flag on amajmeta.code.errorcharamajDeconvolved size of major axis, or the 2{sigma} upper limit if the source is unresolvedarcsecphys.angSizefloate_amaj? rms uncertainty on amajarcsecstat.errorfloatnullablel_aminLimit flag on aminmeta.code.errorcharamin? Deconvolved size of minor axis, or 2{sigma} upper limit if the source is unresolvedarcsecphys.angSizefloatnullablee_amin? rms uncertainty on aminarcsecstat.errorfloatnullablePA? Position angle of major axisdegpos.posAngfloatnullablee_PA? rms uncertainty on PAdegstat.errorfloatnullablel_SILimit flag on SImeta.code.errorcharSI? Spectral index, with respect to NVSS flux density (1.4GHz) (1)phot.flux.densityfloatnullableJ/A+A/471/1105/table5Fitting parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource Name (JHHMM.m+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RAarcsecstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DEarcsecstat.error;pos.eq.decfloatS0Best fit S_0_ parameter valuemJystat.param;meta.modelledfloatE_S0Upper limit of S0 68% confidence intervalmJystat.error;stat.maxfloate_S0Lower limit of S0 68% confidence intervalmJystat.errorfloatalphaBest fit spectral index {alpha} valuespect.index;meta.modelledfloatE_alphaUpper limit of alpha 68% confidence intervalstat.error;stat.maxfloate_alphaLower limit of alpha 68% confidence intervalstat.error;pos.eq.rafloatnu1? Best fit {nu}_1_ parameter valueMHzstat.fit.paramfloatnullableE_nu1? Upper limit of nu1 68% confidence interval. See note (1)MHzstat.error;stat.maxfloatnullablee_nu1? Lower limit of nu1 68% confidence interval. See note (1)MHzstat.errorfloatnullablen_e_nu1[i] i for infinitymeta.notecharnuc? Best fit {nu}_c_ parameter valueMHzstat.fit.paramfloatnullableE_nuc? Upper limit of nuc 68% confidence interval. See note (2)MHzstat.error;stat.maxfloatnullablen_e_nuc[i] i for infinitymeta.notechare_nuc? Lower limit of nuc 68% confidence interval. See note (2)MHzstat.errorfloatnullablelog(chi2r)Least {chi}^2^_reduced_ logarithmic valuestat.fit.chi2floatClass[0-3] Class indicator (3)src.classchar