J/ApJ/794/31ivo://CDS.VizieR/J/ApJ/794/31doi:10.26093/cds/vizier.17940031CDSTyler K.D.Bai L.Rieke G.H.2017-07-03T13:22:15Z2017-05-12T15:58:52ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedinfrared-photometryvisible-astronomyh-alpha-photometryThe effects of dense environments on normal field galaxies are still up for debate despite much study since Abell published his catalog of nearby clusters in 1958 (1958ApJS....3..211A). There are changes in color, morphology, and star formation properties when galaxies fall into groups and clusters, but the specifics of how and where these modifications occur are not fully understood. To look for answers, we focused on star-forming galaxies in A2255, an unrelaxed cluster thought to have recently experienced a merger with another cluster or large group. We used H{alpha}, MIPS 24 {mu}m, and WISE 22 {mu}m to estimate total star formation rates (SFRs) and Sloan Digital Sky Survey photometry to find stellar masses (M_*_) for galaxies out to ~5 r_200_. We compared the star-forming cluster galaxies with the field SFR-mass distribution and found no enhancement or suppression of star formation in currently star-forming galaxies of high mass (log(M_*_/M_{sun}_)>~10). This conclusion holds out to very large distances from the cluster center. However, the core (r_proj_<3 Mpc) has a much lower fraction of star-forming galaxies than anywhere else in the cluster. These results indicate that for the mass range studied here, the majority of the star formation suppression occurs in the core on relatively short timescales, without any enhancement prior to entering the central region. If any significant enhancement or quenching of star formation occurs, it will be in galaxies of lower mass (log(M_*_/M_{sun}_)<10).2014ApJ...794...31Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/794/31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/132/37 : Spectroscopy of Southern warm IR galaxies (Kewley+, 2001)J/ApJS/149/53 : Multicolor photometry of A2255 galaxies (Yuan+, 2003)J/A+A/461/397 : RASS-SDSS galaxy cluster survey. V. (Popesso+, 2007)J/ApJ/714/1256 : Far-IR star formation rate indicators (Calzetti+, 2010)J/ApJ/727/14 : Merging galaxy cluster A2255 in mid-IR (Shim+, 2011)J/other/JApA/32.567 : Rotation measures in A2255 at 18, 21, 25, 85cmhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/794/31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/794/31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/794/31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/794/31https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/794/31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/794/31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/794/31/table2 (Cluster Membership)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/794/31/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/794/31/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/794/31/table2?GETtext/xml+votable180.050000true258.121264.096540.0055555555555555565/2555 2896 2897 2899 6/10214 10215 10217 10219 10224 10226 10232 10233 10234 11593 11594 11595 11600 11602 11608 11610 11617 11620https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/794/31?format=asciiInfraredOpticaldefaultJ/ApJ/794/31/table2Cluster MembershiprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatlogM*? Log of the stellar masslog(solMass)phys.massfloatnullable24Cov[0/1] The 24 micron coverage flag (1)meta.codeintlogL24? Log of 24 micron band luminositylog(1e-07W)phys.luminosityfloatnullablelogL22? Log of 22 micron band luminositylog(1e-07W)phys.luminosityfloatnullablelogLHa? Log of H{alpha} luminositylog(1e-07W)phys.luminosityfloatnullableSFR24? Star Formation Rate from 24 micron band (2)solMass/yrphys.SFRfloatnullableSFR22? Star Formation Rate from 22 micron band (3)solMass/yrphys.SFRfloatnullableAGN? [1/3] AGN flag (4)meta.codeintnullable