J/ApJ/762/83ivo://CDS.VizieR/J/ApJ/762/83doi:10.26093/cds/vizier.17620083CDSChang Y.-Y.van der Wel A.Rix H.-W.Wuyts S.Zibetti S.Ramkumar B.,Holden B.2017-12-05T05:10:50Z2014-10-17T10:07:29ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesredshiftedstellar-massesWe use high-resolution K-band VLT/HAWK-I imaging over 0.25deg^2^ to study the structural evolution of massive early-type galaxies since z~2. Mass-selected samples, complete down to log(M/M_{sun}_)~10.7 such that "typical" (L*) galaxies are included at all redshifts, are drawn from pre-existing photometric redshift surveys. We then separate the samples into different redshift slices and classify them as late- or early-type galaxies on the basis of their specific star formation rate. Axis-ratio measurements for the ~400 early-type galaxies in the redshift range 0.6<z<1.8 are accurate to 0.1 or better. The projected axis-ratio distributions are then compared with lower redshift samples. We find strong evidence for evolution of the population properties: early-type galaxies at z>1 are, on average, flatter than at z<1 and the median projected axis ratio at a fixed mass decreases with redshift. However, we also find that at all epochs z<~2, the most massive early-type galaxies (log(M/M_{sun}_)>11.3) are the roundest, with a pronounced lack of galaxies that are flat in projection. Merging is a plausible mechanism that can explain both results: at all epochs, merging is required for early-type galaxies to grow beyond log(M/M_{sun}_)~11.3, and all early types over time gradually and partially lose their disk-like characteristics.2013ApJ...762...83Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/762/83CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/557/A66 : IR galaxies effective SEDs at various z (Bethermin+, 2013)J/MNRAS/428/1460 : Massive early-type galaxies (Buitrago+, 2013)J/MNRAS/427/1666 : Massive galaxies in CANDELS-UDS field (Bruce+, 2012)J/ApJS/203/24 : Structural param. of CANDELS galaxies (van der Wel+, 2012)J/ApJ/742/3 : Photometric catalogs for ECDF-S and CDF-N (Rafferty+, 2011)J/ApJ/735/L22 : HUDF galaxy properties at z~2 (Szomoru+, 2011)J/MNRAS/414/888 : ATLAS3D project. III. (Emsellem+, 2011)J/MNRAS/412/727 : SDSS red gal. automated morph. classification (Cheng+, 2011)J/ApJS/191/124 : Opt. spectroscopy of ECDF-S X-ray sources (Silverman+, 2010)J/ApJS/189/270 : MUSYC optical imaging in ECDF-S (Cardamone+, 2010)J/ApJ/693/617 : Ellipticities of cluster early-type galaxies (Holden+, 2009)J/ApJS/183/295 : A K-selected catalog of the ECDFS from MUSYC (Taylor+, 2009)J/ApJS/174/136 : GEMS survey data and catalog (Caldwell+, 2008)J/ApJS/172/615 : GALFIT result for GEMS galaxies (Haussler+, 2007)J/ApJ/655/51 : HDFS IRAC observations of 2<z<3.5 galaxies (Wuyts+, 2007)J/AJ/134/1103 : MUSYC deep near-infrared imaging (Quadri+, 2007)J/ApJS/162/1 : MUSYC: optical source catalog (Gawiser+, 2006)J/ApJ/642/L13 : ECDFS MUSYC gal. UBVRIzNB5000 photometry (Gawiser+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/762/83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/762/83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/762/83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/762/83https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/762/83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/762/83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/762/83/table1 (Massive early-type galaxies: 0.6<z<1.8, log(M/M_Sun_)>10.7 and sSFR<1/3t_H_(z))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/762/83/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/762/83/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/762/83/table1?GETtext/xml+votable180.050000true53.209045-28.036260.0055555555555555566/35935 35957https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/762/83?format=asciiOpticalInfrareddefaultJ/ApJ/762/83/table1Massive early-type galaxies: 0.6<z<1.8, log(M/M_Sun_)>10.7 and sSFR<1/3t_H_(z)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CVU2010][4032/78536] ID; same as Cardamone et al. 2010, Cat. J/ApJS/189/270meta.id;meta.mainintz[0.6/1.8] Photometric redshift from EAzY (Brammer et al. 2008ApJ...686.1503B)src.redshiftfloatlogM*[10.7/12] Log of the stellar mass from FAST (Kriek et al. 2009ApJ...700..221K)log(solMass)phys.massfloatKmag[17.6/22] K-band magnitude from GALFITmagphot.mag;em.IR.KfloatRad[0/3] Effective radius from GALFITarcsecphys.angSizefloatqproj[0.1/1] Projected axis ratio from GALFITphys.size.axisRatiofloatT09Cross-match within 1" with Taylor ret al. 2009, J/ApJS/183/295meta.ref.urlintnullableNEDSimbad column added by the CDSmeta.ref.urlchar_RAPositions from MUSYC optical imaging in ECDFS (Cat. J/ApJS/189/270) (right ascension part)degpos.eq.ra;meta.main_DEPositions from MUSYC optical imaging in ECDFS (Cat. J/ApJS/189/270) (declination part)degpos.eq.dec;meta.main