J/ApJS/258/32ivo://CDS.VizieR/J/ApJS/258/32doi:10.26093/cds/vizier.22580032CDSSengupta A.Keel W.C.Morrison G.Windhorst R.A.Miller N.Smith B.2023-11-13T08:02:40Z2022-06-13T08:06:07ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesspectroscopyredshiftedvisible-astronomyline-intensitiesultraviolet-photometrytwo-color-diagramsA rare opportunity to distinguish between internal and environmental effects on galaxy evolution is afforded by "SuperGroups," systems that are rich and massive, but include several comparably rich substructures, surrounded by filaments. We present here a multiwavelength photometric and spectroscopic study of the galaxy population in the SuperGroup Abell 1882 (A1882) at z=0.139, combining new data from the MMT and Hectospec with archival results from the Galaxy And Mass Assembly survey, the Sloan Digital Sky Survey, the Nasa/IPAC Extragalactic Database, the Gemini Multi-Object Spectrograph, and the Galaxy Evolution Explorer. These provide spectroscopic classifications for 526 member galaxies, across wide ranges of local density and velocity dispersion. We identify three prominent filaments along which galaxies seem to be entering the SuperGroup (mostly in E-W directions). A1882 has a well-populated red sequence, containing most galaxies with stellar mass >10^10.5^M_{sun}_, and a pronounced color-density relation even within its substructures. Thus, galaxy evolution responds to the external environment as strongly in these unrelaxed systems as we find in rich and relaxed clusters. From these data, local density remains the primary factor, with a secondary role for distance from the inferred center of the entire structure's potential well. The effects on star formation, as traced by optical and near-UV colors, depend on galaxy mass. We see changes in lower-mass galaxies (M<10^10.5^M_{sun}_) at four times the virial radius of major substructures, while the more massive near-UV Green Valley galaxies show low levels of star formation within two virial radii. The suppression of star formation ("quenching") occurs in the infall regions of these structures even before the galaxies enter the denser group environment.2022ApJS..258...32Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/258/32CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/86 : Groups of Galaxies. I. Nearby Groups (Huchra+ 1982)VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJS/110/213 : Morphological Types in Distant Rich Clusters (Smail+ 1997)J/ApJS/146/267 : Very rich Abell clusters radio analysis (Morrison+, 2003)J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003)J/MNRAS/370/1223 : Dynamical data of 15 nearby galaxy groups (Brough+, 2006)J/ApJS/173/185 : GALEX UV atlas of nearby galaxies (Gil de Paz+, 2007)J/ApJS/173/572 : GALEX/Spitzer photometry in NGC 7331 (Thilker+, 2007)J/ApJS/173/293 : UV-Optical galaxy color-magnitude diagram I. (Wyder+, 2007)J/MNRAS/404/1745 : Dwarf galaxies in Coma supercluster (Mahajan+, 2010)J/MNRAS/452/2087 : Galaxy And Mass Assembly (GAMA): DR2 (Liske+, 2015)J/MNRAS/474/4056 : Cen A MWA 154MHz image (McKinley+, 2018)http://www.gama-survey.org/ : GAMA home pagehttp://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/258/32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/258/32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/258/32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/258/32https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/258/32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/258/32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/258/32/members (Galaxy catalog of Abell 1882 (spectral data, Table 2 and photometric data, Table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/258/32/members?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/258/32/members?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/258/32/members?GETtext/xml+votable180.050000true213.5700989-0.401920.0055555555555555566/25917-25919 25962 26004-26005 26048https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/258/32?format=asciiUVOpticaldefaultJ/ApJS/258/32/membersGalaxy catalog of Abell 1882 (spectral data, Table 2 and photometric data, Table 3)SimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/526] Sequential running identifiermeta.id;meta.mainintRAJ2000[212.96/214.5] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-1.15/0.34] Declination (J2000)degpos.eq.dec;meta.mainzspec[0.13/0.15] Spectroscopic redshiftsrc.redshiftfloate_zspec[4.4e-6/0.0013]? Uncertainty in zspecstat.errordoublenullableEWHa[-99.5/59]? Equivalent width, H{alpha}0.1nmspect.line.eqWidthfloatnullablee_EWHa[0.1/6.1]? Uncertainty in EWHa0.1nmstat.errorfloatnullableDn4000[-1.4/3.8]? D4000 index or the 4000A breakspect.indexfloatnullablee_Dn4000[0.013/0.1]? Uncertainty in Dn4000stat.errorfloatnullableu-r[-0.25/6.28] u-r AB magnitudemagphot.color;em.opt.U;em.opt.Rfloate_u-r[0/0.38] Uncertainty in u-rmagstat.errorfloatNUV-r[-1/7.24]? NUV-r AB magnitudemagphot.color;em.UV;em.optfloatnullablee_NUV-r[0.03/0.3]? Uncertainty in NUV-rmagstat.errorfloatnullablelogMgal[7.27/11.54] log of galaxy masslog(solMass)phys.massfloatRefSource (1)meta.bibcharGAMADisplay data from GAMA DR2 (Liske+, 2015, J/MNRAS/452/2087) within 3"meta.ref.urlintnullableSloanDisplay the online SDSS-DR12 data for the nearest objectmeta.ref.urlchar