The Evolution of Galaxy Morphology for Galaxies in the Canada-France Redshift Survey

Abstract

The 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 types E + S0 + 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 two or three over the redshift range covered by the present survey.

5 files - one text, and 4 postscript figures. Will appear in the August issue of AJ

References in corpus (1)

• Caltech Faint Galaxy Redshift Survey XV: Classification of Galaxies with 0.2 < z < 1.1 in the Hubble Deep Field (North) and its Flanking Fields

Cited by in corpus (15)

• Did most present-day spirals form during the last 8 Gyrs? A formation history with violent episodes revealed by panchromatic observations
• The Morphological Diversities Among Star-forming Galaxies at High Redshifts in the Great Observatories Origins Deep Survey (GOODS)
• The Kinematics of Morphologically Selected z~2 Galaxies in the GOODS-N Field
• Ten Billion Years of Galaxy Evolution
• The Luminosity Function of Early-Type Galaxies at z~0.75
• HST/WFPC2 morphologies and bar structures of field galaxies at 0.4<z<1
• Evolution in the Continuum Morphological Properties of Lyman-Alpha-Emitting Galaxies from z=3.1 to z=2.1
• Deep U-B-V imaging of the Lockman Hole with the LBT. Observations and number counts
• Imaging and Demography of the Host Galaxies of High-Redshift Type Ia Supernovae
• Differential Morphology Between Rest-frame Optical and UV Emission from 1.5 < z < 3 Star-forming Galaxies
• Deep Learning Assessment of galaxy morphology in S-PLUS DataRelease 1
• Low X-Ray Luminosity Galaxy Clusters. II. Optical properties and morphological content at 0.18 < z < 0.70
• Bulgeless disks, dark galaxies, inverted color gradients, and other expected phenomena at higher z. The chromatic surface brightness modulation (CMOD) effect
• Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift
• CO investigation of z=0.4-1.5 galaxies