J/ApJ/721/98ivo://CDS.VizieR/J/ApJ/721/98doi:10.26093/cds/vizier.17210098CDSKartaltepe J.S.Sanders D.B.Le Floc'h E.Frayer D.T.Aussel H.,Arnouts S.Ilbert O.Salvato M.Scoville N.Z.Surace J.Yan L.,Capak P.Caputi K.Carollo C.M.Cassata P.Civano F.Hasinger G.,Koekemoer A.M.Le Fevre O.Lilly S.Liu C.T.McCracken H.J.,Schinnerer E.Smolcic V.Taniguchi Y.Thompson D.J.Trump J.,Baldassare V.F.Fiorenza S.L.2017-09-27T05:55:58Z2012-08-01T07:50:33ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesredshiftedgalaxy-classification-systemssurveysWe analyze the morphological properties of a large sample of 1503 70um selected galaxies in the COSMOS field spanning the redshift range 0.01<z<3.5 with a median redshift of 0.5 and an infrared luminosity range of 10^8^<L_IR_(8-1000um)<10^14^L_{sun}_ with a median luminosity of 10^11.4^L_{sun}_. In general, these galaxies are massive, with a stellar mass range of 10^10^-10^12^M_{sun}_, and luminous, with -25<M_K_<-20. The precise fraction of mergers in any given L_IR_ bin varies by redshift due to sources at z>1 being difficult to classify and subject to the effects of bandpass shifting; therefore, these numbers can only be considered lower limits. At z<1, where the morphological classifications are most robust, major mergers clearly dominate the ULIRG population (~50%-80%) and are important for the LIRG population (~25%-40%). At z>1, the fraction of major mergers is lower, but is at least 30%-40% for ULIRGs. In a comparison of our visual classifications with several automated classification techniques we find general agreement; however, the fraction of identified mergers is underestimated due to automated classification methods being sensitive to only certain timescales of a major merger. The distribution of the U-V color of the galaxies in our sample peaks in the green valley (<U-V>=1.1) with a large spread at bluer and redder colors and with the major mergers peaking more strongly in the green valley than the rest of the morphological classes.2010ApJ...721...98Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/721/98CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)VII/265 : COSMOS Morphological Catalog (V1.1) (Tasca+ 2009)II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/ApJ/709/572 : COSMOS 70um sources (Kartaltepe+, 2010)J/AJ/138/1261 : Spitzer/MIPS observations of the COSMOS field (Frayer+, 2009)J/ApJ/680/939 : Optical spectra of 24um galaxies in COSMOS. I. (Caputi+, 2008)J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJ/696/1195 : COSMOS AGN spectroscopic survey. I. (Trump+, 2009)J/ApJS/172/383 : AGN candidates in the COSMOS field (Trump+, 2007)J/A+A/468/937 : K-band AO imaging in COSMOS deep field (Huertas-Company+,https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/721/98https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/721/98http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/721/98https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/721/98https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/721/98http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/721/98GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/721/98/table1 (Morphological catalog of COSMOS 70um sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/721/98/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/721/98/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/721/98/table1?GETtext/xml+votable180.050000true150.191970831.577747220.0055555555555555565/6814 6/27245 27247https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/721/98?format=asciiOpticalInfrareddefaultJ/ApJ/721/98/table1Morphological catalog of COSMOS 70um sourcesGini? Gini coefficientstat.fit.paramfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1017/5401] Source identification number (as in Paper I) (1)meta.idintCOSMOSSource name (JHHMMSS.sss+DDMMSS.ss)meta.id;meta.maincharLIRLog of total IR luminosity (1)log(solLum)phys.luminosity;em.IRfloate_LIRUncertainty in LIRlog(solLum)stat.errorfloatz[0.01/3.5] Redshiftsrc.redshiftfloatf_zOrigin of z (P=photometric) (2)meta.codecharClassMorphological classification (3)meta.code;src.morphcharSep? Nuclear separation between galaxy pairs and double nucleikpcpos.angDistancefloatnullableRatio[1,]? Mass ratio (4)phys.mass;arith.ratiofloatnullableMassLog of stellar mass (5)log(solMass)phys.massfloatKMag[-120.56/-12.94] Rest-frame absolute K band magnitudemagphys.magAbs;em.IR.KfloatU-VRest-frame (U-V) color indexmagphot.color;em.opt.U;em.opt.VfloatC? Concentration parameterstat.paramfloatnullableA? Rotational asymmetry parameterstat.param;phys.mol.rotationfloatnullableClump? Clumpiness parametersrc.morph.paramfloatnullableM20? M_20_ brightness measurephot.magfloatnullableAcl[1/3]? Automated classification (1=early, 2=late, 3=irregular) (6)meta.code;src.morphintnullableOCatCross-match within 1" with other COSMOS catalogsmeta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar_RAPositions from COSMOS name (right ascension part)degpos.eq.ra;meta.main_DEPositions from COSMOS name (declination part)degpos.eq.dec;meta.main