J/MNRAS/525/5311ivo://CDS.VizieR/J/MNRAS/525/5311doi:10.26093/cds/vizier.75255311CDSSinha A.Datta A.2025-05-22T20:16:15Z2023-09-25T16:10:02ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesradio-galaxiesgalaxy-classification-systemsThe dominant source of radio continuum emissions at low frequencies is synchrotron radiation, which originates from star-forming regions in disc galaxies and from powerful jets produced by active galactic nuclei (AGNs). We studied the Bootes field using the upgraded Giant Meterwave Radio Telescope at 400MHz, achieving a central minimum off-source rms noise of 35Jy/beam and a catalogue of 3782 sources in ~6deg^2^ of the sky. The resulting catalogue was compared to other radio frequency catalogues, and the corrected normalized differential source counts were derived. We use standard multiwavelength techniques to classify the sources in star-forming galaxies (SFGs), radio-loud AGNs, and radio-quiet (RQ) AGNs that confirm a boost in the SFG and RQ AGN populations at lower flux levels. For the first time, we investigated the properties of the radio-infrared (IR) relations at 400MHz in this field. The L400MHz-LTIR relations for SFGs were found to show a strong correlation with non-linear slope values of 1.10+/-0.01, and variation of qTIR with z is given as qTIR=(2.19+/-0.07)(1+z)^-0.15+/-0.08^. This indicates that the non-linearity of the radio-IR relations can be attributed to the mild variation of qTIR values with z. The derived relationships exhibit similar behaviour when applied to Low-Frequency Array at 150MHz and also at 1.4GHz. This emphasizes the fact that other parameters like magnetic field evolution with z or the number densities of cosmic ray electrons can play a vital role in the mild evolution of q values.2023MNRAS.525.5311Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/525/5311CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/161/9 : X-ray survey of the NDWFS Bootes field (Kenter+, 2005)J/A+A/535/A38 : Observations of NOAO Bootes field at 153MHz (Intema+, 2011)J/ApJ/793/82 : LOFAR Bootes and 3C295 field sources (van Weeren+, 2014)J/MNRAS/450/1477 : VLA 352MHz image of the Bootes field. I. (Coppejans+, 2015)J/MNRAS/460/2385 : Bootes field LOFAR 150-MHz observations (Williams+, 2016)J/ApJ/817/119 : Spitzer/IRAC variability survey of Bootes fieldJ/A+A/620/A74 : Bootes field deep LOFAR 150MHz imagingJ/A+A/653/A74 : Bootes field X-ray/non-X-ray sources (Mountrichas+, 2021)J/A+A/655/A40 : LoLSS-Deep Bootes 54MHz catalog (Williams+, 2021)J/MNRAS/515/2032 : LoTSS Bootes Deep Field Giant Radio GalaxiesJ/A+A/676/A37 : Bootes field Apertif 1.4 GHz continuum obs. (Kutkin+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/525/5311https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/525/5311http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/525/5311https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/525/5311https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/525/5311http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/525/5311GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/525/5311/catalog (Bootes field source catalogue at 400MHz from uGMRT)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/525/5311/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/525/5311/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/525/5311/catalog?GETtext/xml+votable180.050000true219.493455273813534.74820724757290.0055555555555555565/2287 2628-2629 6/9145-91472.6504278676176564e-25 2.6504278676176564e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/525/5311?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/525/5311/catalogBootes field source catalogue at 400MHz from uGMRTPAPosition angledegpos.posAngdoublermsrms noisemJy/beamstat.stdev;instr.det.noisedoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintId[0/3849] Sequential numbermeta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.maine_RAJ2000Right ascension errordegstat.error;pos.eq.radoubleDEJ2000Declination (J2000)degpos.eq.dec;meta.maine_DEJ2000Declination errordegstat.error;pos.eq.decdoubleFtotTotal flux at 400MHzmJyphot.flux.density;em.radio.200-400MHzdoubleFpeakPeak flux at 400MHzmJy/beamphot.flux.density;em.radio.200-400MHzdoubleMajMajor axisdegphys.angSizedoubleMinMinor axisdegphys.angSizedouble