J/MNRAS/515/2032ivo://CDS.VizieR/J/MNRAS/515/2032doi:10.26093/cds/vizier.75152032CDSSimonte M.Andernach H.Brueggen M.Schwarz D.J.Prandoni I.,Willis A.G.2024-08-22T20:16:01Z2022-08-10T06:30:30ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiquasarsradio-sourcesradio-galaxiesGiant radio galaxies (GRGs) are radio galaxies that have projected linear extents of more than 700 kpc or 1 Mpc, depending on definition. We have carried out a careful visual inspection in search of GRGs of the Bootes LOFAR Deep Field (BLDF) image at 150 MHz. We identified 74 GRGs with a projected size larger than 0.7 Mpc of which 38 are larger than 1 Mpc. The resulting GRG sky density is about 2.8 (1.43) GRGs per square degree for GRGs with linear size larger than 0.7 (1) Mpc. We studied their radio properties and the accretion state of the host galaxies using deep optical and infrared survey data and determined flux densities for these GRGs from available survey images at both 54 MHz and 1.4 GHz to obtain integrated radio spectral indices. We show the location of the GRGs in the P-D diagram. The accretion mode onto the central black holes of the GRG hosts is radiatively inefficient suggesting that the central engines are not undergoing massive accretion at the time of the emission. Interestingly, 14 out of 35 GRGs for which optical spectra are available show a moderate star formation rate (10-100 M_{sun}_/yr). Based on the number density of optical galaxies taken from the DESI DR9 photometric redshift catalogue, we found no significant differences between the environments of GRGs and other radio galaxies, at least for redshift up to z=0.7.2022MNRAS.515.2032Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/515/2032CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/328 : AllWISE Data Release (Cutri+ 2013)II/365 : The CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021)II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)J/A+A/648/A2 : LoTSS Deep Fields DR1 ELAIS-N1 deep field (Sabater+, 2021)J/A+A/648/A3 : LoTSS Deep Fields DR1 ELAIS-N1 & Lockman Hole (Kondapally+ 2021)J/A+A/648/A4 : LoTSS Deep Fields DR1 photometric redshifts (Duncan+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/515/2032https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/515/2032http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/515/2032https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/515/2032https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/515/2032http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/515/2032GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/515/2032/tablea1 (Radio and Optical data for 74 Giant Radio Galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/515/2032/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/515/2032/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/515/2032/tablea1?GETtext/xml+votable180.050000true214.802733.63280.0055555555555555565/2286-2287 2628-2629 6/9135 9139 9142-9143 9192 9194-9195 10501 10503 10521 10524-10525 10560 10562https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/515/2032?format=asciiRadiodefaultJ/MNRAS/515/2032/tablea1Radio and Optical data for 74 Giant Radio GalaxieszRedshift of the hostsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJNameGRS object designation, JHHMM+DDMMA (1)meta.id;meta.maincharoriginSurvey in which the GRS was seen first (2)meta.bibcharRAJ2000Right ascension (J2000) of GRS hostdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) of GRS hostdegpos.eq.dec;meta.mainLASLargest projected angular size of GRSarcminphys.angSize;stat.maxfloatFRtypeFanaroff-Riley radio morphological typesrc.morph.typechare_z? rms uncertainty of the redshiftstat.error;src.redshiftfloatnullableztype[spe] type of redshift: s = spectroscopic, p = photometric, e = estimated by usmeta.codecharr_zReferences used for redshifts (3)meta.ref;pos.framecharHostName of the GRS host objectmeta.id.parentcharClassType of host of the GRS (4)src.classcharLLSLargest projected linear size (5)Mpcphys.size;stat.maxfloatmagappApparent magnitude of hostmagphot.magfloatFilter[r W1 W2] Filter, r = rmag from DES; W1/2 from AllWISE (Cat. II/328) or CatWISE2020 (2021ApJS..253....8M, Cat. II/365/)meta.id;instr.filtercharS150Integrated 150-MHz flux density (6)mJyphot.flux.density;em.radio.100-200MHzfloatf_S150[*] * if integration area includes emission below 3 sigma rmsmeta.codechare_S150rms uncertainty of integrated 150-MHz fluxmJystat.errorfloatlogP150Decimal log of 150-MHz spectral power (5)W/Hzspect.resolutionfloatl_alpha[>] Lower-limit flag on spectral indexmeta.code.error;pos.eq.racharalpha? Radio spectral index (7)spect.indexfloatnullablee_alpha? rms uncertainty of radio spectral indexstat.error;pos.eq.rafloatnullable