J/ApJ/952/81ivo://CDS.VizieR/J/ApJ/952/81doi:10.26093/cds/vizier/ba-xr-2hCDSFrye B.L.Pascale M.Foo N.Leimbach R.Garuda N.Robles P.S.,Summers J.Diaz C.Kamieneski P.Furtak L.J.Cohen S.H.Diego J.,Beauchesne B.Windhorst R.A.Willner S.P.Koekemoer A.M.Zitrin A.,Caminha G.Caputi K.I.Coe D.Conselice C.J.Dai L.Dole H.,Driver S.P.Grogin N.A.Harrington K.Jansen R.A.Kneib J.-P.,Lehnert M.Lowenthal J.Marshall M.A.Menanteau F.Pampliega B.A.,Pirzkal N.Polletta M.Richard J.Robotham A.Ryan R.E.J.,Rutkowski M.J.Sifon C.Tompkins S.Wang D.Yan H.Yun M.S.2026-07-02T12:00:11Z2025-10-07T15:07:57ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgravitational-lensinggalaxiesinfrared-sourcesredshiftedThe massive galaxy cluster El Gordo (z=0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images. Eight bands of NIRCam imaging were obtained in the "Prime Extragalactic Areas for Reionization and Lensing Science" ("PEARLS") program. Point-spread function-matched photometry across Hubble Space Telescope and NIRCam filters supplies new photometric redshifts. A new light-traces-mass lens model based on 56 image multiplicities identifies the two mass peaks and yields a mass estimate within 500kpc of (7.0+/-0.30)x10^14^M_{sun}_. A search for substructure in the 140 cluster members with spectroscopic redshifts confirms the two main mass components. The southeastern mass peak that contains the brightest cluster galaxy is more tightly bound than the northwestern one. The virial mass within 1.7Mpc is (5.1+/-0.60)x10^14^M_{sun}_, lower than the lensing mass. A significant transverse velocity component could mean the virial mass is underestimated. We contribute one new member to the previously known z=4.32 galaxy group. Intrinsic (delensed) positions of the five secure group members span a physical extent of ~60kpc. 13 additional candidates selected by spectroscopic/photometric constraints are small and faint, with a mean intrinsic luminosity ~2.2mag fainter than L*. NIRCam imaging admits a fairly wide range of brightnesses and morphologies for the group members, suggesting a more diverse galaxy population in this galaxy overdensity.2023ApJ...952...81Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/952/81CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)B/chandra : The Chandra Archive Log (CXC, 1999-2014)J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)J/ApJ/757/22 : Strong and weak lensing analysis of A2261 (Coe+, 2012)J/ApJS/206/10 : CANDELS multiwavelength catalog (Galametz+, 2013)J/ApJ/772/25 : Massive SZE clusters observations with ACT (Sifon+, 2013)J/ApJ/868/129 : Lensing analysis in Abell 370 (Strait+, 2018)J/ApJ/884/85 : RELICS: Reionization Lensing Cluster Survey (Coe+, 2019)J/ApJ/947/20 : Color-selected quiescent gal. at z>3 in JWST (Valentino+, 2023)J/A+A/678/A3 : ACT-CL J0 102-15 MUSE view (Caminha+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/952/81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/952/81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/952/81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/952/81https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/952/81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/952/81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/952/81/table2 (Strong lensing image systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/952/81/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/952/81/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/952/81/table2?GETtext/xml+votable180.050000true15.73079167-49.250097220.0055555555555555566/350438.96275300427713e-20 1.1326272020005996e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/952/81?format=asciiInfrareddefaultJ/ApJ/952/81/table2Strong lensing image systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier (1)meta.id;meta.maincharRAJ2000[1] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[49] Degree of Declination (J2000)pos.eq.dec;meta.mainl_F200WmagLimit flag on F200Wmagmeta.code.errorcharF200Wmag[20.38/29]? JWST/NIRCam apparent F200W AB band magnitudemagphot.mag;em.IR.Hfloatnullablezsp[2.18/5.96]? Spectroscopic redshiftsrc.redshiftfloatnullablef_zspFlag on zsp (2)meta.codecharzph[0.1/6]? Photometric redshift estimatesrc.redshift.photfloatnullableE_zph[0/4]? Upper uncertainty in zphstat.error;stat.max;src.redshift.photfloatnullablee_zph[0/0.4]? Lower uncertainty in zphstat.error;stat.min;src.redshift.photfloatnullablef_zphFlag on zph (2)meta.code;src.redshift.photcharzmod[2.2/10.9]? Lens-model predicted redshiftsrc.redshift;meta.modelledfloatnullablemu[1.1/230]? Magnification factorphot.flux;arith.ratiofloatnullabler_OIDReference code for OID (3)meta.ref;pos.framecharOIDOther designation(s) of the arcmeta.idchar