J/AJ/129/31ivo://CDS.VizieR/J/AJ/129/31doi:10.26093/cds/vizier.51290031CDSOwen F.N.Ledlow M.J.Keel W.C.Wang Q.D.Morrison G.E.2017-07-03T14:25:59Z2007-07-10T12:51:38ZCDS support team

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

cds-question@unistra.frgalaxy-clustersphotometryradio-sourcesUsing our extensive radio, optical, near-IR, and X-ray imaging and spectroscopy, we consider the reason for the unusually large number of radio-detected galaxies, mostly found outside the cluster core, in Abell 2125 (z=0.2465, richness class 4). With 20cm VLA data, we detect continuum emission from 90 cluster members. The multiwavelength properties of these galaxies suggest that most of the radio emission is due to an enhanced star formation rate. The recent dynamical study of Miller et al. (2004, Cat. <J/ApJ/613/841>) suggests that A2125 is undergoing a major cluster-cluster merger, with our view within 30{deg} of the merger axis and within 0.2Gyr of core passage. The combination of projection effects and the physical processes at work during this special time in the cluster's evolution seem likely to be responsible for the unusual level of activity we see in the cluster. We argue that tidal effects on individual cluster members, often far from the cluster core, are responsible for the increased star formation. Our results are consistent with the idea that disk galaxies during this phase of a cluster's evolution undergo rapid evolution through a burst of star formation on their way to becoming S0 galaxies.2005AJ....129...31Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/129/31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/129/26 : A deep radio survey of Abell 2125. I (Owen+, 2005)J/ApJ/613/841 : Redshifts in A2125 (Miller+, 2004)J/AJ/118/625 : Radio sources in Abell 2125 and 2645 (Dwarakanath+, 1999)J/ApJ/611/821 : X-raying A2125 (Wang+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/129/31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/129/31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/129/31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/129/31https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/129/31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/129/31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/129/31/A2125 (Multiwavelength results for Abell 2125)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/129/31/A2125?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/129/31/A2125?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/129/31/A2125?GETtext/xml+votable180.050000true234.557566.21830560.0055555555555555566/11663 11685https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/129/31?format=asciiOpticalRadiodefaultJ/AJ/129/31/A2125Multiwavelength results for Abell 2125zRedshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (G1) (1)meta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Estimated error in RAssstat.error;pos.eq.rafloatDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Estimated error in DEsarcsecstat.error;pos.eq.decfloatDistDistance from the nominal cluster center (2)Mpcpos.distancefloatSp20cmUncorrected peak flux density in units of {mu}Jy/beam sizeuJyphot.flux.density;em.radio.750-1500MHzfloatS20cmCorrected total flux densityuJyphot.flux.density;em.radio.750-1500MHzfloate_S20cmEstimated error in S20cmuJystat.errorfloatl_Size[<] Limit flag on Sizemeta.code.error;phys.angSizecharSizeBest fit size, major axis (3)arcsecphys.angSize.smajAxisfloatSize1? Best fit size, minor axis (3)arcsecphys.angSize.sminAxisfloatnullablePA? Best fit size, position angle (3)arcsecpos.posAng;meta.modelledintnullablen_z[e] Indicates emission lines were present in the spectrum (Miller et al. 2004, Cat. <J/ApJ/613/841>)meta.notecharUmagGunn-Oke aperture U band AB magnitudemagphot.mag;em.opt.UfloatBmagGunn-Oke aperture B band AB magnitudemagphot.mag;em.opt.BfloatVmagGunn-Oke aperture V band AB magnitudemagphot.mag;em.opt.VfloatRmagGunn-Oke aperture R band AB magnitudemagphot.mag;em.opt.RfloatImagGunn-Oke aperture I band AB magnitudemagphot.mag;em.opt.Ifloat8010magGunn-Oke aperture 8010{AA} band AB magnitudemagphot.mag;em.opt.Ifloat9170magGunn-Oke aperture 9170{AA} band AB magnitudemagphot.mag;em.opt.IfloatJmag? Gunn-Oke aperture J band AB magnitudemagphot.mag;em.IR.JfloatnullableHmag? Gunn-Oke aperture H band AB magnitudemagphot.mag;em.IR.HfloatnullableKmag? Gunn-Oke aperture K band AB magnitudemagphot.mag;em.IR.Kfloatnullablel_sizeLimit flag on sizemeta.code.error;phys.angSizecharsizeLargest linear sizekpcphys.size.diameterfloatlogL20Log of the absolute 20cm luminositylog(W.Hz**-1)phys.luminosity;em.radiofloatpDistProjected distance from cluster centerMpcpos.distancefloatRMAGAbsolute rest frame R band magnitudemagphys.magAbs;em.opt.RfloatspThe hyperz spectral type (1)src.class.colorintAgeThe hyperz age (1)Gyrtime.agefloatAVThe hyperz V band extinction (1)magphys.absorption;em.opt.VfloatMillervelocities from Miller et al., 2004, Cat. J/ApJ/613/841meta.ref.urlcharL20cm20cm luminosity property "star-formation index" scorestat.fit.paramfloatsAlignAlign property "star-formation index" scorestat.fit.paramfloatsMagMagnitude property "star-formation index" scorestat.fit.paramfloatsEmisEmission property "star-formation index" scorestat.fit.paramfloatsAgeAge property "star-formation index" scorestat.fit.paramfloatsDustDust property "star-formation index" scorestat.fit.paramfloatsTotalTotal "star-formation index" scorestat.fit.paramfloat