J/ApJ/918/61ivo://CDS.VizieR/J/ApJ/918/61doi:10.26093/cds/vizier/ba-wp-1xCDSCarrasco E.R.Verdugo T.Motta V.Foex G.Ellingson E.Gomez P.L.,Falco E.Limousin M.2026-07-02T11:58:14Z2023-02-27T13:10:13ZCDS support team

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

cds-question@unistra.frgalaxy-clustersvisible-astronomyspectroscopyredshiftedphotometrygravitational-lensingtwo-color-diagramsWe present an optical study of the strong-lensing galaxy cluster MS0440.5+0204 at z=0.19593, based on CFHT/MegaCam g', r' photometry and GMOS/Gemini and CFHT/MOS/SIS spectroscopy in a broader area than previous works. We have determined new spectroscopic redshifts for the most prominent gravitational arcs surrounding the central galaxy in the cluster. The new redshifts and the information provided by the photometric catalog allow us to perform a detailed weak- and strong-lensing mass reconstruction of the cluster. The large number of member galaxies and the area covered by our observations allow us to estimate more accurately the velocity dispersion and mass of the cluster and to examine in detail the nature of the cluster and surrounding structures. The dynamical mass is in good agreement with the mass inferred from the lensing analysis and X-ray estimates. About 68% of the galaxies are located in the inner <~0.86h_70_^-1^Mpc region of the cluster. The galaxy redshift distribution in the inner region of the cluster shows a complex structure with at least three substructures along the line of sight. Other substructures are also identified in the galaxy density map and in the weak-lensing mass map. The member galaxies in the northeast overdensity are distributed in a filament between the clusters MS 0440.5+0204 and ZwCL 0441.1+0211, suggesting that these two structures might be connected. MS0440.5+0204 appears to be dynamically active, with a cluster core that is likely experiencing a merging process, and with other nearby groups at projected distances of <~1h_70_^-1^Mpc that could be being accreted by the cluster.2021ApJ...918...61Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/918/61CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/cfht : Log of CFHT Exposures (CADC, 1979-)IX/15 : Einstein EMSS Survey (Gioia+ 1990, Stocke+ 1991)B/eso : ESO Science Archive Catalog (ESO, 1991-2022)J/ApJS/133/1 : GIS catalog project : source catalog (Ueda+, 2001)J/AJ/132/1796 : Spectroscopy in nearby group cores (Carrasco+, 2006)J/ApJ/664/777 : Multiwavelength study of RX J1117.4+0743 (Carrasco+, 2007)J/ApJ/668/643 : Multiply imaged gravitational lens systems (Limousin+, 2007)J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)J/ApJ/762/L30 : CLASH: MCS J0416.1-2403 analysis (Zitrin+, 2013)J/ApJ/783/52 : Redshifts in the field of A383 (Geller+, 2014)J/ApJ/805/143 : MC2: redshift analysis of CIZA J2242.8+5301 (Dawson+, 2015)J/MNRAS/446/683 : Free-form lensing grid solution for A1689 (Diego+, 2015)J/MNRAS/452/1437 : Abell 2744 strong-lensing analysis (Jauzac+, 2015)J/ApJS/224/33 : CLASH-VLT: the cluster MACS J0416.1-2403 (Balestra+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/918/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/918/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/918/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/918/61https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/918/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/918/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/918/61/table3 (Galaxy redshifts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/918/61/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/918/61/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/918/61/table3?GETtext/xml+votable180.050000true6/22959 22970https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/918/61?format=asciiOpticaldefaultJ/ApJ/918/61/table3Galaxy redshiftsNameGalaxy namemeta.id;meta.maincharIDInternal identifiermeta.idcharr_zReference for z (2)meta.ref;pos.framecharRAJ2000[4]? Hour of Right Ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000[2]? Degree of Declination (J2000)pos.eq.dec;meta.mainnullablerpmag[17.49/23.26]? Sloan total r' band AB magnitude (3)magphot.mag;em.opt.Rfloatnullablegp-rp[0.5/1.9]? Sloan (g'-r') color index (3)magphot.color;em.opt.B;em.opt.Rfloatnullablez[0.06/0.8] Individual spectroscopic redshift (4)src.redshiftdoublee_z[3e-5/0.002] Uncertainty in zstat.error;src.redshiftdoublef_z[0/1] Flag on z (5)meta.codeintzf[0.068/0.8]? Final redshift (6)src.redshift;pos.heliocentricdoublenullablee_zf[0.0002/0.001]? Uncertainty in zfstat.errordoublenullableMmMembership flag ("Yes": 90 occurrences or "No")meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[0/1]? Galaxy type code (1)meta.codeintnullableR[0/19.5]? Tonry & Davis 1979AJ.....84.1511T R valuestat.correlationfloatnullableNl[4/16]? Number of emission line used to derived zmeta.numberintnullable