J/ApJS/93/145ivo://CDS.VizieR/J/ApJS/93/145doi:10.26093/cds/vizier.20930145CDSKOLLGAARD R.I.BRINKMANN W.MCMATH CHESTER M.FEIGELSON E.D.,HERTZ P.REICH P.WIELEBINSKI R.1997-12-09T20:21:00Z1997-12-09T21:20:51ZCDS support team

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

cds-question@unistra.frradio-sourcesA 29.3deg^2 region surrounding the north ecliptic pole (NEP; R.A.=18h00m, Dec.=+66d30m) was mapped with the Very Large Array at 1.5GHz to support the deepest portion of the ROSAT all-sky soft X-ray survey. The resulting VLA-NEP survey catalog contains 2435 radio sources with flux densities in the range of 0.3-1000mJy, including over 200 fainter than 1mJy. The 28 fields of the inner 1.5deg have noise levels sigma ~=60uJy, and the 85 fields centered between 1.5deg and 3.0deg from the NEP have sigma ~=120uJy. The typical spatial resolution is 20" HPBW, and most positions are accurate to <2". Approximately 6% of the sources are found to be extended with size >30". We have compared the VLA-NEP catalog with four other radio catalogs made at lower resolution, as well as with the NASA Extragalactic Database and find counterparts for ~18% of the VLA-NEP objects. The normalized, differential radio source count is in agreement with the previous studies. Between 1 and 150mJy the slope of the logN-logS relation is 0.68+/-0.03. Addresses: Kollgaard R.I. <rik@astro.psu.edu> McMath Chester M. <chester@astro.psu.edu> Feigelson E.D. <edf@Feigelson> Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 Brinkmann W. <wpb@ibma.ipp-garching.mpg.de> Max-Planck-Institut fur Extraterrstrische Physik, Giessenbach strasse, 85740 Garching, Germany Hertz P. <hertz@xip.nrl.navy.mil> E.O. Hulburt Center for Space Research, Naval Research Laboratory, Code 7621.5, Washinton, DC 20375-5352 Reich P. <p395pat@mpifr-bonn.mpg.de> Wielebinski R. <rwielebinski@mpifrbonn.mpg.de> Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany1994ApJS...93..145Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/93/145CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/93/145https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/93/145http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/93/145https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/93/145https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/93/145http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/93/145GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/93/145/table2 (VLA-NEP source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/93/145/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/93/145/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/93/145/table2?GETtext/xml+votable180.050000true261.584541766.70408330.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/93/145?format=asciiRadiodefaultJ/ApJS/93/145/table2VLA-NEP source catalogNoteAdditional notes (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVLA-NEP source name (J2000)meta.id;meta.maincharFieldVLA-NEP field designationobs.fieldintRAJ2000Right Ascension, J2000 (corrected)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullablee(Pos)Net positional uncertaintyarcsecstat.errorfloatDisDistance of the source from the field centerarcminpos.angDistancefloatStotCorrected integrated flux densitymJyphot.flux.density;em.radio.1500-3000MHzfloate_Stotrms uncertainty on StotmJystat.errorfloatSpeakCorrected peak flux densitymJyphot.flux.density;em.radio.1500-3000MHzfloate_Speakrms uncertainty on SpeakmJystat.errorfloatSNRSignal-to-noise ratio of the detectionstat.snrintID'ID'= identification listed in table 3meta.id.crosscharJ/ApJS/93/145/table3VLA-NEP sources with possible identificationsLRW88LRW88 name (2)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVLA-NEP source, see table 2, field IDmeta.idcharFlux[]? VLA-NEP total flux densitymJyphot.flux.density;em.radio.1500-3000MHzfloatBWE91BWE91 name (1)meta.idcharSBWE91[]? BWE91 catalogued flux densitymJyphot.flux.density;em.radio.3-6GHzintSLRW88[]? LRW88 catalogued flux densitymJyphot.flux.density;em.radio.1500-3000MHzintWB92WB92 name (3)meta.idcharSWB92[]? WB92 catalogued flux densitymJyphot.flux.density;em.radio.750-1500MHzintLRW92LRW92 name (4)meta.idcharNEDNASA Extragalactic Database name (5)meta.idcharVned[]? NED visual magnitudemagphot.mag;em.opt.VfloatSI1[]? Spectral index between 1.5GHz and 5GHzspect.indexfloatSI2[]? Spectral index between 1.5GHz and 2.7GHzspect.indexfloatRef[]? Reference number (6)meta.refint