J/other/Galax/9.ivo://CDS.VizieR/J/other/Galax/9.99CDSAndernach H.Jimenez Andrade E.F.Willis A.G.2022-08-08T06:58:20Z2021-11-19T15:41:25ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiradio-sourcessurveysradio-galaxiesWe report the results of a visual inspection of images of the Rapid ASKAP Continuum Survey (RACS) in search of extended radio galaxies (ERG) that reach or exceed linear sizes on the order of one Megaparsec. We searched a contiguous area of 1059deg^2^ from RA=20h20m to 06h20m, and -50{deg}<Dec<-40{deg} which is covered by deep multi-band optical images of the Dark Energy Survey (DES), and in which previously only three ERGs larger than 1Mpc had been reported. For over 1800 radio galaxy candidates inspected, our search in optical and infrared images resulted in hosts for 1440 ERG, for which spectroscopic and photometric redshifts from various references were used to convert their largest angular size (LAS) to projected linear size (LLS). This resulted in 178 newly discovered giant radio sources (GRS) with LLS>1Mpc, of which 18 exceed 2Mpc and the largest one is 3.4Mpc. Their redshifts range from 0.02 to about 2.0, but only 10 of the 178 new GRS have spectroscopic redshifts. For the 146 host galaxies the median r-band magnitude and redshift are 20.9 and 0.64, while for the 32 quasars or candidates these are 19.7 and 0.75. Merging the six most recent large compilations of GRS results in 458 GRS larger than 1Mpc, so we were able to increase this number by about 39 per cent to now 636.2021Galax...9...99Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Galax/9.99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/635/A5 : LoTSS giant radio galaxies. I. (Dabhade+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Galax/9.99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/Galax/9.99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/Galax/9.99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/Galax/9.99https://vizier.iucaa.in/viz-bin/votable?-source=J/other/Galax/9.99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/Galax/9.99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/Galax/9.99/table2 (Radio and Optical data for 181 Giant Radio Galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/Galax/9.99/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/other/Galax/9.99/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/Galax/9.99/table2?GETtext/xml+votable180.050000true1.1349-42.08520.0055555555555555566/16386 33743 33748 33753 33761 33765 34007 34011 34016 34022 34025 34032 34040 34062 34067 34083 34093 34118 34125 34135 34141 34145 34151-34152 34156 34176 34178 34180 34185 34195 34200 34202 34213 34224 34226 34325 34329-34330 34342 34353 34356-34357 34359 34365 34367 34373 34376 34379 34385 34402 34417 34441-34442 34456 34498 34561 35006 35025 35029 35036 35042 35044 35050 35054 35056-35057 35060-35061 35064 35068-35069 35094 35098 35112 35128 35132 35142 35154 35171 35201 35206 35222 35235 35240-35241 35250 35264 35341 35343 35350 35352-35353 35356 35365 35373 35376 35378 35398 35406 35415 35422 35427 35433 35460 35462 35478 35496 35503 39464 39471 39561-39562 46034 46053-46054 46057 46061 46075 46270-46271 46285 46294 46297 46299 46314-46315 46319-46320 46326 46355 46364-46365 46372 46380 46393 46419 46428 46440-46441 46471 46475 46487 46493 46497 46503 46507 46607 46614 46630 46644 46650 46674 46676-46677 46680 46691 46696 46706 46731 46754 46764 46849 47377 47391 47428 47442 47453 47462 47465 47470https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/Galax/9.99?format=asciiRadiodefaultJ/other/Galax/9.99/table2Radio and Optical data for 181 Giant Radio Galaxiesu_rmag[?] Uncertainty flag on rmagmeta.code.errorcharRmorphMorphological type of radio emission according to table 1 of the papersrc.morph.type;meta.tablecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000) of GRS hostdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) of GRS hostdegpos.eq.dec;meta.mainl_LAS[>] Limit flag on LASmeta.code.errorcharLASLargest projected angular size of GRSarcminphys.angSize;stat.maxfloatu_LAS[?] Uncertainty flag on LASmeta.code.errorcharl_z[>] Limit flag on redshiftmeta.code.error;src.redshiftcharzRedshiftsrc.redshiftdoubleu_z[?] Uncertainty flag on redshift (3)meta.code.error;src.redshiftcharztype[spe] Type of redshift: s = spectroscopic, p = photometric, e = estimated by usmeta.codecharr_zReferences used for redshifts (4)meta.ref;pos.framecharl_LLS[>] Limit flag on LLSmeta.code.errorcharLLSLargest projected linear size (5)Mpcphys.size;stat.maxfloatHostName of GRS host object (6)meta.id.parentcharu_Host[?] Uncertainty flag on host (7)meta.code.errorcharClassType of host of the GRS (8)meta.code.classcharrmagr-band magnitude of host from DESmagphot.mag;em.opt.RfloatS888Integrated 888-MHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatlogP888decimal log of 888-MHz spectral powerW/Hzspect.resolutionfloatRPA[0,179] Radio position angle (N through E)degpos.posAngintJnameGRS object designation, JHHMM+DDMMC (1)meta.id;meta.maincharOriginSurvey in which the GRS was seen first (2)meta.idchar