J/ApJS/220/7ivo://CDS.VizieR/J/ApJS/220/7doi:10.26093/cds/vizier.22200007CDSRoberts D.H.Cohen J.P.Lu J.Saripalli L.Subrahmanyan R.2018-10-23T07:55:24Z2018-09-19T15:05:06ZCDS support team

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

cds-question@unistra.frradio-galaxiesradio-continuum-emissionredshiftedCheung (2007, J/AJ/133/2097) identified a sample of 100 candidate X-shaped radio galaxies using the NRAO FIRST survey; these are small-axial-ratio extended radio sources with off-axis emission. Here, we present radio images of 52 of these sources that have been made from archival Very Large Array data with resolution of about 1". Fifty-one of the 52 were observed at 1.4GHz, 7 were observed at 1.4 and 5GHz, and 1 was observed only at 5GHz. We also present overlays of the Sloan Digital Sky Survey red images for 48 of the sources, and DSS-II overlays for the remainder. Optical counterparts have been identified for most sources, but there remain a few empty fields. Our higher resolution VLA images along with FIRST survey images of the sources in the sample reveal that extended extragalactic radio sources with small axial ratios are largely (60%) cases of double radio sources with twin lobes that have off-axis extensions, usually with inversion-symmetric structure. The available radio images indicate that at most 20% of sources might be genuine X-shaped radio sources that could have formed by a restarting of beams in a new direction following an interruption and axis flip. The remaining 20% are in neither of these categories.2015ApJS..220....7Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/220/7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/133/2097 : FIRST "Winged" and X-shaped radio source cand. (Cheung, 2007)J/ApJS/181/548 : X-shaped radio sources cand. II. New redshifts (Cheung+, 2009)J/ApJ/852/47 : X-shaped radio sources. I. VLA imaging (Roberts+, 2018)J/ApJ/852/48 : X-shaped radio sources. II. Sample data (Saripalli+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/220/7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/220/7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/220/7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/220/7https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/220/7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/220/7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/220/7/sources (Observed and derived source properties (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/220/7/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/220/7/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/220/7/sources?GETtext/xml+votable180.050000true11.4254583330.3515277780.0055555555555555566/4119 5032 5229 5438 5808 6039 6482 6595 6957 7448 8557 9010 9023 9273 9351 9613 9851 10269 10675 10770 10940 10987 11090 11116 11404 11496 17407 17493 17517 17803 17825 18014 18112 18113 25460 25523 25566 25849 25914 26058 26106 26202 27195 27248 27577 28084 28484 28626 28660 31333 409449.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/220/7?format=asciiRadiodefaultJ/ApJS/220/7/sourcesObserved and derived source properties (tables 1 and 2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetSet (G1)meta.notechar[C2007]Name (JHHMM+DDMM)meta.id;meta.maincharf_[C2007][g] Flag on Name (1)meta.codecharFig[1/52] Figure numbermeta.idintTypeType: G=narrow line radio galaxy; or BG=broad line radio galaxymeta.notecharz[0.03/0.9]? Redsfhit (2)src.redshiftfloatnullablez2[0.26]? Second redshift for J1210-0341 (2)src.redshiftfloatnullableScoreS_core_ from this workmJyphot.flux.density;em.radiocharStot[12/1889] S_tot_ from this workmJyphot.flux.density;em.radiointu_Stot[?] Uncertainty flag on Stotmeta.code.errorcharStot2[36/2385] Integrated 1.4GHz flux density from Cheung (2007, J/AJ/133/2097)mJyphot.flux.density;em.radio.750-1500MHzinttheta[24/170] Largest angular size {theta}_max_arcsecphys.angSize;stat.maxintEdges?Inner edges?meta.codecharEm?Large-scale emission resolved out? (3)meta.codecharLproj[28/950]? Projected sizekpcphys.angSizeintnullablel_fcoreLimit flag on fcore%meta.code.errorcharfcore[0.03/13]? Core fraction in percent, L band%stat.value;arith.ratiofloatnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Cheung, 2007, J/AJ/133/2097 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Cheung, 2007, J/AJ/133/2097 (declination part)degpos.eq.dec;meta.main