J/A+A/642/A153ivo://CDS.VizieR/J/A+A/642/A153doi:10.26093/cds/vizier.36420153CDSDabhade P.Mahato M.Bagchi J.Saikia D.J.Combes F.Sankhyayan S.,Roettgering H.J.A.Ho L.C.Gaikwad M.Raychaudhury S.Vaidya B.,Guiderdoni B.2022-11-08T17:42:53Z2020-10-13T10:45:47ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradio-galaxiesradio-continuum-emissionquasarsWe present the first results of a project called SAGAN, which is dedicated solely to the studies of relatively rare megaparsec-scale radio galaxies in the Universe, called giant radio galaxies (GRGs). We have identified 162 new GRGs primarily from the NVSS with sizes ranging from ~0.71Mpc to 2.82Mpc in the redshift range of ~0.03-0.95, of which 23 are hosted by quasars (giant radio quasars, GRQs). As part of the project SAGAN, we have created a database of all known GRGs, the GRG catalogue, from the literature (including our new sample); it includes 820 sources. For the first time, we present the multi-wavelength properties of the largest sample of GRGs. Our results establish that the distributions of the radio spectral index and the black hole mass of GRGs do not differ from the corresponding distributions of normal-sized radio galaxies (RGs). However, GRGs have a lower Eddington ratio (ER) than RGs. Using the mid-infrared data, we classified GRGs in terms of their accretion mode: either a high-power radiatively efficient high-excitation state, or a radiatively inefficient low-excitation state. We find that GRGs in high-excitation state statistically have larger sizes, stronger radio power, jet kinetic power, and higher ER than those in low-excitation state. Our analysis reveals a strong correlation between the ER and the scaled jet kinetic power, which suggests a disc-jet coupling. Our environmental study reveals that ~10% of all GRGs may reside at the centres of galaxy clusters, in a denser galactic environment, while the majority appears to reside in a sparse environment. We find that the probability of BCG as a GRG is quite low. We present new results for GRGs that range from black hole mass to large-scale environment properties. We discuss their formation and growth scenarios, highlighting the key physical factors that cause them to reach their gigantic size.2020A&A...642A.153Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A153CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/ApJS/224/18 : Identify giant radio sources from the NVSS (Proctor, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A153https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A153http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A153https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A153https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A153http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A153GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/642/A153/tablea1 (General properties of SAGAN-I (SGS))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/tablea1?GETtext/xml+votable180.050000true1.20937512.81113890.005555555555555556Cone search capability for table J/A+A/642/A153/tablea2 (Black hole properties, radio core and jet kinetic power of the SAGAN GRG (SGS))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/tablea2?GETtext/xml+votable180.050000true1.20937512.81113890.005555555555555556Cone search capability for table J/A+A/642/A153/tablea3 (Jet kinetic power and black hole properties of GRGs from GRG catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/tablea3?GETtext/xml+votable180.050000true2.83062532.2871750.005555555555555556Cone search capability for table J/A+A/642/A153/tablea4 (Properties of the GRGs residing in centre of cluster or BCGs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/tablea4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/tablea4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/tablea4?GETtext/xml+votable180.050000true23.3635-8.40458890.005555555555555556Cone search capability for table J/A+A/642/A153/grs (*An update to the catalogue of giant radio galaxies and quasars (up to March 2020) (added on 08-Nov-2022))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/grs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/grs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/grs?GETtext/xml+votable180.050000true0.1825833312.2689750.005555555555555556Cone search capability for table J/A+A/642/A153/rs (A catalogue of radio sources with accurate sizes and other properties (added on 08-Nov-2022))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A153/rs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A153/rs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A153/rs?GETtext/xml+votable180.050000true12.813-9.035694440.0055555555555555566/398 747 1714 2085 2176 2179 2232 2611 2672 2818 2883 4098 4192 4313 4327 4399 4419 4522 4731 4745 4747 4870 4928 4954 4970 5185 5365 5449 5507 5567 5583 5612 5616 5626 5679 5731 5773 5916 5957 5980 5988 5994 5996 6044 6067 6320 6398 6469 6492 6576 6986 7384 7397 8290 8345 8395 8624 8816 8971 9006 9147 9163 9497 9841 10329 10341 10345 10548 10657 10685 10687 10721 10742 10750 10776 10854 10874 10941 10975 10993 10995 11010 11026 11039 11070 11087 11091 11096 11114 11116 11148 11150 11170 11207 11265 11301 11308 11315 11368 11404 11411 11420 11430 11440 11920 11931 12357 12633 12650 12826 13432 13458 14871 16671 16900 16955 17082 17450 17601 17616 17967 18014 18132 18219 18233 18242 18312 18550 18629 18637 18956 19201 19267 19282 19534 19542 19559 19574 19597 19655 19695 19705 19725 19896 19993 20044 20099 20172 20276 20335 20554 22354 22513 23049 23138 23259 23810 24112 24475 24608 24701 24772 24884 25402 25834 25937 26109 26210 26263 26455 26469 26977 27016 27203 27261 27430 27506 27638 27927 28020 28040 28055 28071 28188 28202 28215 28279 28328 28429 28545 28606 28654 30885 31425 31478 31581 31623 31625 31641 31649 31662 31842 32183 32190 32344 32470 32500 34484 34782 34785 35624 35663 35764 36000 36203 38255 40239 40268 42683 44297 46581 47543 47894 48335 48614 490789.939104750406538e-26 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/642/A153?format=asciiRadiodefaultJ/A+A/642/A153/tablea1General properties of SAGAN-I (SGS)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharClass[G/Q] Object Type (G = Galaxy and Q = Quasar)src.classcharNo[1/162] Serial Numbermeta.idintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainrmag? Apparent r band magnitude of the host galaxymagphot.mag;em.opt.Rfloatnullablee_rmag? Apparent r band magnitude error of the host galaxymagstat.error;phot.magfloatnullablezRedshift of the host galaxysrc.redshiftdoublee_zRedshift error of the host galaxystat.error;src.redshiftdoublef_z[spz pz] Redshift Type (1)meta.codecharasizeTotal Angular size of GRGarcminphys.angSizefloatsizeTotal Projected linear size of GRGMpcphys.sizefloatS1400Integrated Flux of the GRG at 1400MHzmJyphot.flux.density;em.radio.750-1500MHzfloate_S1400Integrated Flux error of the GRG at 1400MHzmJystat.errorfloatP1400Radio Power of the GRG at 1400MHz1e+25W.Hz**-1phys.luminosity;em.radio.750-1500MHzfloate_P1400Radio Power error of the GRG at 1400MHz1e+25W.Hz**-1stat.errorfloatS150? Integrated Flux of the GRG at 150MHzmJyphot.flux.density;em.radio.100-200MHzdoublenullablee_S150? Integrated Flux error of the GRG at 150MHzmJystat.errorfloatnullableP150? Radio Power of the GRG at 150MHz1e+25W.Hz**-1phys.luminosity;em.radio.100-200MHzfloatnullablee_P150? Radio Power error of the GRG at 150MHz1e+25W.Hz**-1stat.errorfloatnullableSI? Spectral Index between 150MHz and 1400MHzspect.index;em.radio.100-200MHzfloatnullablee_SI? Spectral Index errorstat.errorfloatnullabler_z? Redshift references for GRGs (2)meta.ref;pos.frameintnullableMorphFanaroff-Riley Type I and II or HyMoRS or Remnantmeta.note;src.morph.typecharJ/A+A/642/A153/tablea2Black hole properties, radio core and jet kinetic power of the SAGAN GRG (SGS)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNo[1/162] Serial Numbermeta.idintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainNameName of SGS GRG (SAGANJHHMMSS.ss+DDMMSS.ss)meta.id;meta.maincharClass[G/Q] Object Type (G = Galaxy and Q = Quasar)src.classcharsigma? Velocity dispersion obtained from SDSSkm/sphys.veloc.dispersionfloatnullablee_sigma? Velocity dispersion error obtained from SDSSkm/sstat.errorfloatnullableMBH? Black hole mass1e+09solMassphys.massfloatnullablee_MBH? Black hole mass error1e+09solMassstat.errorfloatnullableSc1400? Radio core flux from FIRST at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_Sc1400? Radio core flux error from FIRST at 1.4GHzmJystat.errorfloatnullableER? Eddington Ratiophys.luminosity;arith.ratiofloatnullableQjet? Jet Kinetic Power derived from 150MHz luminosity (10^43^erg/s)1e+36Wphys.luminosityfloatnullableJ/A+A/642/A153/tablea3Jet kinetic power and black hole properties of GRGs from GRG cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSampleSample name, where SGS=SAGAN GRG Samplemeta.id;src.samplecharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainQjetJet Kinetic Power derived from 150MHz luminosity (10^43^erg/s)1e+36Wphys.luminosityfloate_QjetJet Kinetic Power error (10^43^erg/s)1e+36Wstat.errorfloatMBHBlack hole mass1e+09solMassphys.massfloate_MBHBlack hole mass error1e+09solMassstat.errorfloatBeddMaximum magnetic field derived from MBH10000Gphys.magFieldfloate_BeddMagnetic field error10000Gstat.errorfloatSpinBlack hole spinphys.angMomentumfloate_SpinBlack hole spin errorstat.errorfloatJ/A+A/642/A153/tablea4Properties of the GRGs residing in centre of cluster or BCGsDensityComoving number density of galaxies with r200Mpc**-3pos.distancefloatRatioLinear extent of GRG/ virial radiusphys.size.radius;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNo[1/18] Serial Numbermeta.idintClusterWHL cluster name (JHHMMSS.s+DDMMSS) (1)meta.id;meta.maincharRAJ2000GRG Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000GRG Declination (J2000.0)pos.eq.dec;meta.mainrmagApparent r band magnitude of the host galaxy (BCG)magphot.mag;em.opt.RfloatzRedshift of the clustersrc.redshiftdoubler200Viral radius of the clusterMpcphys.size.radiusfloatRL*Richness parameter of the clustersrc.class.richnessfloatM200Mass of the cluster within r2001e+14solMassphys.massfloatN200Number of galaxies in the clustermeta.numberintJ/A+A/642/A153/grs*An update to the catalogue of giant radio galaxies and quasars (up to March 2020) (added on 08-Nov-2022)zRedshiftsrc.redshiftdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrNoSequential numbermeta.recordintAuthorsReporting paper first author name & year, in refs.dat filemeta.bibintHostTypeHostType (1)meta.codecharSMT9Size measurement type (2)meta.codecharRAJ2000Right ascension of host galaxy/quasar (J2000)pos.eq.ra;meta.mainDEJ2000Declination of host galaxy/quasar (J2000)pos.eq.dec;meta.mainasizeFinal total size of source in arcminutesarcminphys.angSizefloatTypeMorphological type (3)src.morph.typecharSurveyDescribes the radio sky survey from which size measurements are done (4)spect.dopplerVeloc.radiocharsizeTotal size of source in Mpc using the asize and DC with Ho=67.8km/s/Mpc cosmologyMpcphys.size.diameterfloatz-typeType of measurement (Spz=Spectroscopic, Pz= Photometric)meta.codecharr_zReference for redshift, either paper or survey, in refs.dat filemeta.ref;pos.frameintDLLuminosity distanceMpcpos.distancedoubleDcComoving distanceMpcpos.distancefloatFNVSS? Total integrated flux for the source from NVSS (1.4 GHz)mJyphot.flux.density;em.radio.750-1500MHzdoublenullableF150? Total integrated flux (at ~150MHz ) for the source from either LoTSS or TGSSmJyphot.flux.density;em.radio.100-200MHzdoublenullableJ/A+A/642/A153/rsA catalogue of radio sources with accurate sizes and other properties (added on 08-Nov-2022)TypeMorphological type (3)src.morph.typecharSurveyDescribes the radio sky survey from which size measurements are done (4)spect.dopplerVeloc.radiocharsizeTotal size of source in Mpc using the asize and DC with Ho=67.8km/s/Mpc cosmologyMpcphys.size.diameterfloatzRedshiftsrc.redshiftdoublez-typeType of measurement (Spz=Spectroscopic, Pz= Photometric)meta.codecharr_zReference for redshift, either paper or survey, in refs.dat filemeta.ref;pos.frameintDLLuminosity distanceMpcpos.distancedoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrNoSequential numbermeta.recordintAuthorsReporting paper first author name & year, in refs.dat filemeta.bibintHostTypeHostType (1)meta.codecharRAJ2000Right ascension of host galaxy/quasar (J2000)pos.eq.ra;meta.mainDEJ2000Declination of host galaxy/quasar (J2000)pos.eq.dec;meta.mainasizeFinal total size of source in arcminutesarcminphys.angSizefloatDcComoving distanceMpcpos.distancefloatFNVSS? Total integrated flux for the source from NVSS (1.4 GHz)mJyphot.flux.density;em.radio.750-1500MHzdoublenullableF150? Total integrated flux (at ~150MHz ) for the source from either LoTSS or TGSSmJyphot.flux.density;em.radio.100-200MHzdoublenullableSMT9Size measurement type (2)meta.codecharJ/A+A/642/A153/refsReferences for grs.dat and rs.dat tablesBibCoeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteint