J/ApJ/473/713ivo://CDS.VizieR/J/ApJ/473/713doi:10.26093/cds/vizier.14730713CDSZirbel E.L.2017-12-22T05:32:01Z2014-06-19T12:27:52ZCDS support team

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

cds-question@unistra.frradio-sourcesactive-galactic-nucleiradio-galaxiesThis paper describes those properties of the host galaxies of powerful radio sources that are unique to radio galaxies. The radio galaxies have redshifts up to z=0.5 and radio powers, P(408MHz), ranging from 10^25^ to 10^28^W.Hz^-1^ (H_0_=50km.s^-1^.Mpc^-1^ and q_0_=0). We find that the magnitudes, colors, and surface brightness profiles of these radio galaxies are very diverse. Their rest frame V magnitudes range from -24th to -20th magnitude and are 0.55+/-0.06mag fainter than those of brightest cluster members. Their (B-V) colors can be as red as those of brightest cluster members but may also be ~1 mag bluer. The optical structure of the low-redshift (0.03<z<0.25) radio galaxies may vary ranging from cD to N galaxy behaviour. Although the host galaxies of the low-redshift radio sources are generally "elliptical-like" galaxies, a comparison of the overall structure of radio galaxies to those of radio- quiet "generalized elliptical galaxies" of Schombert shows that only 17% are genuine elliptical galaxies, 9% have elliptical profiles with truncated halos, 26% are roughly elliptical but have disturbed surface brightness profiles, 16% are cD or D galaxies, 7% have double nuclei, and 21% are N galaxies. The only property that radio galaxies, as a class, have in common is that their sizes are relatively larger than those of normal elliptical galaxies of the same absolute magnitude. At the 22d isophote (in V) radio galaxies are 11% larger, at the 24th isophote they are 15% larger, and at the 25th isophote they are 20% larger. The host galaxies of the low-redshift (0.03<z<0.25) FR I and FR II sources have different properties. 69% of all FR I's are associated with cD-like or double nucleus galaxies, 19% with smooth ellipticals, and 13% with disturbed ellipticals; no FR I's are associated with N galaxies. 41% of all FR IIs are associated with N galaxies, 26% with smooth ellipticals, and 26% with disturbed ellipticals; no FR II's are associated with cD-like galaxies. The colors and color gradients are also different, with the FR II's having both bluer colors and a larger dispersion in their color gradients. Powerful FR I and FR II sources exhibit differing cosmological evolutions in their number counts. At low redshifts, almost all powerful sources are FR I's, and at high redshifts they are predominantly FR II's. We suggest that powerful FR I's prefer host galaxies that are the dominant central galaxies of relaxed groups and clusters, while FR II's are most often associated with violent galaxy encounters.1996ApJ...473..713Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/473/713CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/448/521 : Radio powers in radio galaxies (Zirbel+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/473/713https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/473/713http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/473/713https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/473/713https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/473/713http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/473/713GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/473/713/table6 (Low-redshift data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/473/713/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/473/713/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/473/713/table6?GETtext/xml+votable180.050000true9.267067-1.1522780.005555555555555556Cone search capability for table J/ApJ/473/713/table7 (High-redshift data (2 lines removed, see the "Note (1)" below))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/473/713/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/473/713/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/473/713/table7?GETtext/xml+votable180.050000true126.3134.1218330.0055555555555555566/928 1696 2111 2310 2621 2622 4455 5103 5311 5369 5415 5432 5671 5694 6418 8116 8264 8288 8675 8989 9009 9273 9375 9395 9742 9769 10601 10765 10816 11408 11806 12045 12335 12359 12673 13120 13707 15064 16301 17052 17141 17719 17790 17950 17979 18017 18041 18065 18365 18683 18895 19543 19745 19900 20030 20380 20384 20904 21811 21982 22534 22827 22976 23167 23185 23469 23476 25444 25704 26037 26302 26374 26390 26491 26995 27382 27423 27626 28149 28265 28268 28564 28663 30022 31080 31509 32394 32395 34104 34264 35056 35098 35434 36100 36155 39012 40777 44650 45031 45763 45915 47921 48480 48487 48712https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/473/713?format=asciiRadiodefaultJ/ApJ/473/713/table6Low-redshift dataz[0.03/0.22] Redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_NameSimbad column added by the CDSmeta.notecharNameGalaxy name (1)meta.id;meta.maincharlogP? Logarithm of radio power at 408MHzlog(W.Hz**-1)phys.luminosity;em.radio.400-750MHzfloatnullableV16? 16 kpc aperture absolute V-band magnitudemagphot.mag;em.opt.BfloatnullableV87? 87 kpc aperture absolute V-band magnitudemagphys.magAbs;em.opt.V;instr.fovfloatnullableD(B-V)? color difference {Delta}(B-V) to locus of E/S0 galaxiesmagphot.color;em.opt.B;em.opt.VfloatnullableSeSurface brightness at the effective radiusmag.arcsec**-2phot.mag.sb;em.opt.Vfloatlog(re)? logarithm of effective radiuslog(arcsec)phys.angSizefloatnullablelog(r22)? logarithm of 22d isophotal radiuslog(arcsec)phys.angSizefloatnullablelog(r24)? logarithm of 24th isophotal radiuslog(arcsec)phys.angSizefloatnullablelog(r25)? logarithm of 25th isophotal radiuslog(arcsec)phys.angSizefloatnullableRich? background-corrected group richness (G1)src.class.richness;pos.lgfloatnullablee_Rich? Mean error on Richstat.errorfloatnullableTypeStructural classification (G2)src.morph.typecharFRFanaroff-Riley class.src.class.structcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/473/713/table7High-redshift data (2 lines removed, see the "Note (1)" below)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy name (1)meta.id;meta.maincharz[0.27/0.5] Redshift,src.redshiftfloatlogP? Logarithm of radio power at 408MHzlog(W.Hz**-1)phys.luminosity;em.radio.400-750MHzfloatnullableV87? Extinction-corrected absolute magnitudemagphys.magAbsfloatnullableRichBackground-corrected group richness (G1)src.class.richness;pos.lgfloate_RichMean error on Richstat.errorfloatFRFanaroff-Riley classsrc.class.structcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main