J/AJ/122/621ivo://CDS.VizieR/J/AJ/122/621doi:10.26093/cds/vizier.51220621CDSvan den Bergh S.2023-04-06T16:50:46Z2007-06-17T11:26:50ZCDS support team

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

cds-question@unistra.frgalaxiescatalogssurveysredshiftedgalaxy-classification-systemsThe images of 229 galaxies in the Canada-France Redshift Survey have been classified on the DDO system. These observations were combined with previous classifications of galaxies with known redshifts in the Hubble Deep Field. The combined sample provides homogeneous morphological classifications for 425 galaxies of known redshift. The fraction of all galaxies that are of type E, S0, or E/S0 appears to remain approximately constant at ~17% over the redshift range 0.25<z<1.2. Over the same range, the fraction of irregular (Ir) galaxies increases from ~5% to ~12%. Part of this increase may be due to mild luminosity evolution of Ir galaxies. The frequency of mergers is found to rise by a factor of 2 or 3 over the redshift range covered by the present survey. These results are in qualitative agreement with those obtained previously by Brinchmann et al. (Cat. <J/ApJ/499/112>) using a coarser galaxy classification system.2001AJ....122..621Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/122/621CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/225 : Canada-France Redshift Survey catalogue ((Le Fevre+ 1995)J/ApJ/464/79 : CFRS XI: High-redshift field galaxies morphology (Schade+ 1996)J/ApJ/481/49 : CFRS XIV. Field galaxies up to z=1 (Hammer+ 1997)J/ApJ/499/112 : HST CFRS and LDSS redshift surveys. I. (Brinchmann+ 1998)J/ApJ/517/148 : ISO observations of the CFRS field (Flores+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/122/621https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/122/621http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/122/621https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/122/621https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/122/621http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/122/621GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/122/621/table1 (Morphological classifications for galaxies that have been observed spectroscopically)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/122/621/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/122/621/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/122/621/table1?GETtext/xml+votable180.050000true150.181208325.24250.0055555555555555566/4567 11424 19036 23210https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/122/621?format=asciiOpticaldefaultJ/AJ/122/621/table1Morphological classifications for galaxies that have been observed spectroscopicallyzRedshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCFRSCFRS number (Cat. VII/225)meta.id;meta.mainfloatn_CFRS[a] if classified at (or close to) rest-frame B wavelength.meta.notecharClassMorphology classificationmeta.code.class;src.morph.typecharRemRemarksmeta.notecharSimbadSimbad column added by the CDSmeta.refchar_RAPosition extracted from CFRS catalog (Cat. VII/225); sources not existing in the CFRS catalogue have blank positions (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition extracted from CFRS catalog (Cat. VII/225); sources not existing in the CFRS catalogue have blank positions (declination part)degpos.eq.dec;meta.mainnullable