J/ApJ/773/86ivo://CDS.VizieR/J/ApJ/773/86doi:10.26093/cds/vizier.17730086CDSTyler K.D.Rieke G.H.Bai L.2017-12-12T14:44:34Z2015-03-19T15:18:27ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedgalaxiesspectroscopyinfrared-sourcesultraviolet-astronomyDense environments are known to quench star formation in galaxies, but it is still unknown what mechanism(s) are directly responsible. In this paper, we study the star formation of galaxies in A2029 and compare it to that of Coma, combining indicators at 24{mu}m, H{alpha}, and UV down to rates of 0.03M_{sun}_/yr. We show that A2029's star-forming galaxies follow the same mass-SFR relation as the field. The Coma cluster, on the other hand, has a population of galaxies with star formation rates (SFRs) significantly lower than the field mass-SFR relation, indicative of galaxies in the process of being quenched. Over half of these galaxies also host active galactic nuclei. Ram-pressure stripping and starvation/strangulation are the most likely mechanisms for suppressing the star formation in these galaxies, but we are unable to disentangle which is dominating. The differences we see between the two clusters' populations of star-forming galaxies may be related to their accretion histories, with A2029 having accreted its star-forming galaxies more recently than Coma. Additionally, many early-type galaxies in A2029 are detected at 24{mu}m and/or in the far-UV, but this emission is not directly related to star formation. Similar galaxies have probably been classified as star forming in previous studies of dense clusters, possibly obscuring some of the effects of the cluster environment on true star-forming galaxies.2013ApJ...773...86Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/773/86CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)J/ApJ/761/114 : Multi-wavelength study of galaxy clusters II. (Atlee+, 2012)J/ApJ/714/1256 : Far-IR star formation rate indicators (Calzetti+, 2010)J/ApJ/707/890 : IR properties of E and S0 galaxies (Temi+, 2009)J/ApJ/703/1672 : Far-IR and H{alpha} fluxes in galaxies (Kennicutt+, 2009)J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009)J/ApJ/666/863 : GOODS MIPS early-type galaxies (Van Der Wel+, 2007)J/MNRAS/357/1337 : H{alpha} survey of cluster galaxies (Moss+, 2005)J/AJ/126/1607 : IRAS Revised Bright Galaxy Sample (Sanders+, 2003)J/ApJS/132/37 : Spectroscopy of Southern warm IR galaxies (Kewley+, 2001)J/ApJ/496/39 : Properties of poor groups of galaxies. I. (Zabludoff+ 1998)J/MNRAS/292/419 : Cooling flows in 207 clusters of galaxies (White+, 1997)J/ApJ/252/102 : Radio sources in bright spiral galaxies. II. (Condon+, 1982)http://www.sdss3.org/ : SDSS-III home pagehttp://galex.stsci.edu/GR6/ : GALEX GR6/7 home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/773/86https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/773/86http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/773/86https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/773/86https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/773/86http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/773/86GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/773/86/table1 (A2029 member list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/773/86/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/773/86/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/773/86/table1?GETtext/xml+votable180.050000true227.595955.64154140.0055555555555555565/2055https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/773/86?format=asciiOpticalInfraredUVdefaultJ/ApJ/773/86/table1A2029 member listz[0.06/0.09] Redshiftsrc.redshiftfloatrecnoRecord 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.mainlogL24[7.8/11.6]? Log 24{mu}m luminositylog(solLum)phys.luminosity;em.IR.15-30umfloatnullablelogLHa[5.7/8.5]? Log H{alpha} luminositylog(solLum)phys.luminosity;em.line.HalphafloatnullablelogLFUV[8/10.3]? Log FUV luminositylog(solLum)phys.luminosity;em.UVfloatnullableSFRmin[0.01/10]? Minimum star formation rate (1)solMass/yrmeta.id;meta.mainfloatnullableSFRmax[0.03/10]? Maximum star formation rate (1)solMass/yrmeta.idfloatnullablelogM*[8.3/11.9]? Log stellar masslog(solMass)phys.massfloatnullableNotes[0-4,] Additional note(s) (2)meta.notecharDR9Display the SDSS-DR9 photometric data (Cat. V/139) within 1"meta.ref.urlcharSloanDisplay the online SDSS data for the nearsest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar