J/MNRAS/435/650ivo://CDS.VizieR/J/MNRAS/435/650doi:10.26093/cds/vizier.74350650CDSMauch T.Klockner H.-R.Rawlings S.Jarvis M.Hardcastle M.J.,Obreschkow D.Saikia D.J.Thompson M.A.2024-08-06T20:17:23Z2014-10-09T16:15:01ZCDS support team

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

cds-question@unistra.frsurveysradio-galaxiesgalaxy-classification-systemsWe describe a 325MHz survey, undertaken with the Giant Metrewave Radio Telescope (GMRT), which covers a large part of the three equatorial fields at 9, 12 and 14.5h of right ascension from the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) in the area also covered by the Galaxy And Mass Assembly (GAMA) survey. The full data set, after some observed pointings were removed during the data reduction process, comprises 212 GMRT pointings covering ~90deg^2^ of sky. We have imaged and catalogued the data using a pipeline that automates the process of flagging, calibration, self-calibration and source detection for each of the survey pointings. The resulting images have resolutions of between 14 and 24-arcsec and minimum rms noise (away from bright sources) of ~1mJy/beam, and the catalogue contains 5263 sources brighter than 5{sigma}. We investigate the spectral indices of GMRT sources which are also detected at 1.4GHz and find them to agree broadly with previously published results; there is no evidence for any flattening of the radio spectral index below S_1.4_=10mJy. This work adds to the large amount of available optical and infrared data in the H-ATLAS equatorial fields and will facilitate further study of the low-frequency radio properties of star formation and AGN activity in galaxies out to z~1.2013MNRAS.435..650Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/435/650CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/415/2336 : Herschel-ATLAS Science Demonstration Catalog (Rigby+, 2011)J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/435/650https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/435/650http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/435/650https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/435/650https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/435/650http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/435/650GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/435/650/catalog (Catalog of 325MHz sources in the 9h, 12h and 14.5h fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/435/650/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/435/650/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/435/650/catalog?GETtext/xml+votable180.050000true128.6185-1.55319440.0055555555555555564/1622 1685 1706 5/1024-1026 5459 5461-5463 5468-5469 6397 6399 6479 6486 6492-6494 6501 6512-6514 6568 6570-6571 6737 6819 6828 6830 6912 10239 6/4108 4112 4128 21831 21841-21843 21861 21881 21884 25587 25593-25595 25911 25915 25931 25933-25935 25938-25939 25942-25943 25948 25950-25951 25980 26001 26003 26012-26013 26060 26064 26243 26249-26254 26276 26278-26279 26956-26957 26959 26992-26993 26996 27275 27290 27318 27324 27652 27656 40951 409552.1534725313611987e-25 2.1534725313611987e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/435/650?format=asciiOpticalRadiodefaultJ/MNRAS/435/650/catalogCatalog of 325MHz sources in the 9h, 12h and 14.5h fieldse_PA? rms uncertainty on PA (5)degstat.errorintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RA (1)arcsecstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DE (1)arcsecstat.error;pos.eq.decfloatA325MHz fitted peak brightness (mJy/beam) (2)mJyphot.flux.density;em.radio.200-400MHzfloate_Arms uncertainty on A (mJy/beam) (2)mJystat.errorfloatS325MHz total flux density (3)mJyphot.flux.density;em.radio.200-400MHzfloate_Srms uncertainty on S (3)mJystat.errorfloatMaj? Major axis FWHM of the fitted elliptical Gaussianarcsecphys.angSize.smajAxisfloatnullablee_Maj? rms uncertainty on Maj (5)arcsecstat.errorfloatnullableMin? Minor axis FWHM of the fitted elliptical Gaussianarcsecphys.angSize.sminAxisfloatnullablee_Min? rms uncertainty on Min (5)arcsecstat.error;stat.minfloatnullablePA[0/180]? Position angle (east of north) of the fitted elliptical Gaussian (4)degpos.posAng;meta.modelledfloatnullablermsLocal rms noise (mJy/beam) (6)mJystat.stdev;instr.det.noisefloatPointingName of the GMRT mosaicked image containing the source (7)meta.id;obschar