J/A+A/672/A178ivo://CDS.VizieR/J/A+A/672/A178doi:10.26093/cds/vizier.36720178CDSSimonte M.Andernach H.Brueggen M.Best P.N.Osinga E.2024-04-03T09:27:17Z2023-04-19T08:44:51ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiquasarsradio-sourcesradio-galaxiesWe study the alignment of radio galaxies (RG) in the ELAIS-N1 Low Frequency ARray (LOFAR) deep field, which covers an area of 25 deg^2^. The low noise level of below 0.02 mJy/beam of the LOFAR deep field observations at 144 MHz enabled the identification of 447 extended radio galaxies (ERG) with apparent radio size larger than 30 arcsec. For these we measured the major axis radio position angle (RPA). For 95 per cent of these sources have either photometric or spectroscopic redshifts, we performed a three-dimensional alignment analysis. We show the distribution of the position angles of radio galaxies in the ELAIS-N1 field and perform multiple statistical tests to find that the distribution of position angles is consistent with being uniform. Two peaks around position angles of 50 and 140 deg are likely spurious and not caused by clustering of aligned sources in 3D space. Our results do not support a 2D or 3D alignment of radio galaxies on scales smaller than ~4 deg.2023A&A...672A.178Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A178CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/328 : AllWISE Data Release (Cutri+ 2013)II/365 : CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021)II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)VII/292 : DESI Legacy Imaging Surveys DR8 (Duncan, 2022)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/A+A/672/A178https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/672/A178http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/672/A178https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/672/A178https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/672/A178http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/672/A178GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/672/A178/tablea1 (Radio and optical data for 447 Extended Radio Galaxies (ERG))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/672/A178/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/672/A178/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/672/A178/tablea1?GETtext/xml+votable180.050000true238.172154.2920.0055555555555555564/634 5/2880-2881 6/9981 9983 10123 10126-10127 10160 10162 10168 11348-11349 11351 11357 11528-11529https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/672/A178?format=asciiRadiodefaultJ/A+A/672/A178/tablea1Radio and optical data for 447 Extended Radio Galaxies (ERG)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJnameERG object designation, JHHMM+DDMMa (1)meta.id;meta.maincharcflag[C] C if considered a candidatemeta.codecharRAJ2000Right ascension (J2000) of ERG hostdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) of ERG hostdegpos.eq.dec;meta.mainLASLargest projected angular size of ERGarcminphys.angSize;stat.maxfloatRPA[0,179] radio position angledegpos.posAngintf_RPA[:] : if RPA is uncertainmeta.codecharFilterr' and r are rmag from SDSS and DES(I), iK is Kron imag from Pan-STARRS, W1/2 from AllWISE or CatWISE2020instr.bandpasscharLLSLargest projected linear size (6)Mpcphys.size;stat.maxfloatFRtypeFanaroff-Riley radio morphological type (2)src.morph.typecharzRedshift adopted for the host (3)src.redshiftfloate_z? Uncertainty of the redshiftstat.error;src.redshiftfloatnullableztype[spe] Type of redshift (4)meta.codecharHostName of the ERG host objectmeta.id.parentcharClassType of host of the ERG (5)src.classcharmagApparent magnitude of host in filtermagphot.magfloat