J/A+A/549/A55ivo://CDS.VizieR/J/A+A/549/A55doi:10.26093/cds/vizier.35490055CDSWilliams W.L.Intema H.T.Rottgering H.J.A.2023-01-06T15:15:05Z2012-12-19T20:28:09ZCDS support team

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

cds-question@unistra.frsurveysactive-galactic-nucleiradio-galaxiesWe present wide area, deep, high-resolution 153MHz GMRT observations of the NOAO Bootes field, adding to the extensive, multi-wavelength data of this region. The observations, data reduction, and catalogue construction and description are described here. The seven pointings produced a final mosaic covering 30 square degrees with a resolution of 25". The rms noise is 2mJy/beam in the centre of the image, rising to 4-5mJy/beam on the edges, with an average of 3mJy/beam. Seventy-five per cent of the area has an rms <4mJy/beam. The extracted source catalogue contains 1289 sources detected at 5{sigma}, of which 453 are resolved. We estimate the catalogue to be 92 per cent reliable and 95 per cent complete at an integrated flux density limit of 14mJy. The flux densities and astrometry have been corrected for systematic errors. We calculate the differential source counts which are in good agreement with those in the literature and provide an important step forward in quantifying the source counts at these low frequencies and low flux densities. The GMRT 153MHz sources have been matched to the 1.4GHz NVSS and 327MHz WENSS catalogues and spectral indices were derived.2013A&A...549A..55Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/549/A55CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/1784 : 1.4GHz imaging of the Bootes field (de Vries+, 2002)J/AJ/127/213 : LALA Bootes field X-ray source catalog (Wang+, 2004)J/AJ/130/923 : Faint radio sources in the NOAO Bootes field (Wrobel+, 2005)J/ApJ/634/L1 : 16 micron sources in the NOAO Bootes field (Kasliwal+, 2005)J/ApJS/161/9 : X-ray survey of the NDWFS Bootes field (Kenter+, 2005)J/ApJ/641/140 : Optical counterparts in the NDWFS Bootes field (Brand+, 2006)J/A+A/535/A38 : Observations of NOAO Bootes field at 153Mhz (Intema+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/549/A55https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/549/A55http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/549/A55https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/549/A55https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/549/A55http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/549/A55GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/549/A55/table2 (List of sources in the T-RaMiSu)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/549/A55/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/549/A55/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/549/A55/table2?GETtext/xml+votable180.050000true221.8879635.131260.005555555555555556Cone search capability for table J/A+A/549/A55/table3 (List of Gaussian components)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/549/A55/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/549/A55/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/549/A55/table3?GETtext/xml+votable180.050000true221.8879635.131260.0055555555555555565/2285-2287 2298 2625 2628-2630 6/9127 9133-9135 9137-9139 9184 9186-9187 10509 10511 10524-10526 10560-10562 105681.0137886252997884e-25 1.0137886252997884e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/549/A55?format=asciiRadiodefaultJ/A+A/549/A55/table2List of sources in the T-RaMiSurecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_DEJ2000rms uncertainty on DEdeg (1{sigma})arcsecstat.error;pos.eq.decfloatSi153MHz integrated flux densitymJyphot.flux.density;em.radio.100-200MHzintNameSource identifier (JHHMMSS+DDMM)meta.id;meta.maincharprimaryRAJ2000Centroid right ascension (J2000)degpos.eq.ra;meta.maine_RAJ2000rms uncertainty on RAdeg (1{sigma})arcsecstat.error;pos.eq.rafloatDEJ2000Centroid declination (J2000)degpos.eq.dec;meta.maine_Sirms uncertainty on S153 (1{sigma})mJystat.errorintSp153MHz peak flux density in mJy/beammJyphot.flux.density;em.radio.100-200MHzinte_Sprms uncertainty on S153 (1{sigma}) in mJy/beammJystat.error;src.spTypeintNoiseLocal RMS image noise near source in mJy/beammJyphys.angSize;pos.lsr;pos.lgfloatNg? Number of gaussians fitted to source (1)meta.numberintnullableSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlcharJ/A+A/549/A55/table3List of Gaussian componentsDEJ2000Centroid declination (J2000)degpos.eq.dec;meta.maine_DEJ2000rms uncertainty on DEdeg (1{sigma})arcsecstat.error;pos.eq.decfloatSi153MHz integrated flux densitymJyphot.flux.density;em.radio.100-200MHzinte_Sirms uncertainty on S153 (1{sigma})mJystat.errorintSp153MHz peak flux density in mJy/beammJyphot.flux.density;em.radio.100-200MHzinte_Sprms uncertainty on S153 (1{sigma}) in mJy/beammJystat.error;src.spTypeinta? Gaussian semi-major axis (1)arcsecphys.angSize;srcfloatnullablee_a? Uncertainty on gaussian semi-major axis (1)arcsecstat.errorfloatnullableb? Gaussian semi-minor axis (1)arcsecphys.angSize.sminAxisfloatnullablee_b? Uncertainty on gaussian semi-minor axis (1)arcsecstat.errorfloatnullablephi? Gaussian position angle {phi} (1)degpos.posAngintnullablee_phi? Uncertainty on gaussian position angle (1)degstat.errorintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource identifier (JHHMMSS+DDMM)meta.id;meta.maincharm_Name[abc] Component identifiermeta.code.multipcharRAJ2000Centroid right ascension (J2000)degpos.eq.ra;meta.maine_RAJ2000rms uncertainty on RAdeg (1{sigma})arcsecstat.error;pos.eq.rafloat