J/MNRAS/462/1910ivo://CDS.VizieR/J/MNRAS/462/1910doi:10.26093/cds/vizier.74621910CDSHardcastle M.J.Gurkan G.van Weeren R.J.Williams W.L.Best P.N.,de Gasperin F.Rafferty D.A.Read S.C.Sabater J.Shimwell T.W.,Smith D.J.B.Tasse C.Bourne N.Brienza M.Bruggen M.Brunetti G.,Chyzy K.T.Conway J.Dunne L.Eales S.A.Maddox S.J.Jarvis M.J.,Mahony E.K.Morganti R.Prandoni I.Rottgering H.J.A.Valiante E.,White G.J.2024-08-16T20:18:14Z2018-03-22T15:24:19ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsradio-sourcesgalaxy-classification-systemsWe present Low-Frequency Array (LOFAR) High-Band Array observations of the Herschel-ATLAS North Galactic Pole survey area. The survey we have carried out, consisting of four pointings covering around 142deg^2^ of sky in the frequency range 126-173MHz, does not provide uniform noise coverage but otherwise is representative of the quality of data to be expected in the planned LOFAR wide-area surveys, and has been reduced using recently developed 'facet calibration' methods at a resolution approaching the full resolution of the data sets (~10x6 arcsec) and an rms off-source noise that ranges from 100{mu}Jy beam^-1^ in the centre of the best fields to around 2mJy/beam at the furthest extent of our imaging. We describe the imaging, cataloguing and source identification processes, and present some initial science results based on a 5{sigma} source catalogue. These include (i) an initial look at the radio/far-infrared correlation at 150 MHz, showing that many Herschel sources are not yet detected by LOFAR; (ii) number counts at 150MHz, including, for the first time, observational constraints on the numbers of star-forming galaxies; (iii) the 150-MHz luminosity functions for active and star-forming galaxies, which agree well with determinations at higher frequencies at low redshift, and show strong redshift evolution of the star-forming population; and (iv) some discussion of the implications of our observations for studies of radio galaxy life cycles.2016MNRAS.462.1910Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/1910CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/204 : Galaxy properties at NGP (Odewahn+ 1995)VII/214 : APS Galaxies in the North Galactic Pole (Cabanela, 1999)J/A+A/372/276 : Polarization catalogue for NGP area (Berdyugin+, 2001)J/ApJS/99/391 : The CfA redshift survey: NGP +36 zone. (Huchra+ 1995)J/ApJS/175/86 : NGP+30{deg} zone galaxies I. (Petrosian+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/1910https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/1910http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/1910https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/462/1910https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/462/1910http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/462/1910GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/462/1910/tablea1 (Radio catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/1910/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/1910/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/1910/tablea1?GETtext/xml+votable180.050000true190.69761532.976531110.0055555555555555563/162 4/643 652 1757 5/2566 2569-2571 2584 2586-2587 2590 2612 2614 2616 2688-2689 2692 7007 7037 6/10254-10255 10270-10271 10273-10275 10340 10342-10343 10354 10366 10452 10454 10460 10468-10470 10472 10480 10761 10764-10765 10772 10776 28023 28025-28027 28145 28157 281598.613890125444795e-26 1.118149259736703e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/462/1910?format=asciiOpticalRadiodefaultJ/MNRAS/462/1910/tablea1Radio cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIAU name of the radio source (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Source right ascension (J2000) (1)degpos.eq.ra;meta.mainindexede_RAJ2000Nominal (statistic) error on RAdegdegstat.error;pos.eq.radoubleDEJ2000Source declination (J2000) (1)degpos.eq.dec;meta.mainindexede_DEJ2000Nominal (statistic) error on DEdegdegstat.error;pos.eq.decdoubleFtotTotal flux density at 150MHz (2)Jyphot.flux.density;em.radio.100-200MHzdoublee_FtotError on FtotJystat.errordoubleSep? Component separation (3)pos.distance;src.orbitalfloatnullableF130Total flux density in the 130MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F130[]? Error on F130Jystat.errordoublenullableF138Total flux density in the 138MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F138[]? Error on F138Jystat.errordoublenullableF146Total flux density in the 146MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F146[]? Error on F146Jystat.errordoublenullableF154Total flux density in the 154MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F154[]? Error on F154Jystat.errordoublenullableF161Total flux density in the 161MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F161[]? Error on F161Jystat.errordoublenullableF169Total flux density in the 169MHz spectral windowJyphot.flux.density;em.radio.100-200MHzdoublee_F169[]? Error on F169Jystat.errordoublenullableClassClassificiation, Single for a single PYBDSM source, Multiple for a composite sourcesrc.classcharNcomp? Number of components (4)meta.numberintnullableMaj? Major axis of the best-fitting elliptical Gaussian fitted by PYBDSMdegphys.angSize;meta.modelleddoublenullablee_Maj? Error on Majdegstat.errordoublenullableMin? Minor axis of the best-fitting elliptical Gaussian fitted by PYBDSMdegphys.angSize;meta.modelleddoublenullablee_Min? Error on Mindegstat.error;stat.mindoublenullablePA? Position angle axis of the best-fitting elliptical Gaussian fitted by PYBDSMdegpos.posAng;meta.modelleddoublenullablee_PA? Error on PAdegstat.errordoublenullableDCMaj? Major axis after deconvolution of the LOFAR beamdegphys.angSize;instr.beamdoublenullablee_DCMaj? Error on DC Majdegstat.errordoublenullableDCMin? Minor axis after deconvolution of the LOFAR beamdegphys.angSize;instr.beamdoublenullablee_DCMin? Error on DCMindegstat.errordoublenullableDCPA? Position angle after deconvolution of the LOFAR beamdegpos.posAng;instr.beamfloatnullablee_DCPA? Error on DCPAdegstat.errorfloatnullable