Evolution of the Early-Type Galaxy Fraction in Clusters since z = 0.8

Abstract

We study the morphological content of a large sample of high-redshift clusters to determine its dependence on cluster mass and redshift. Quantitative morphologies are based on bulge+disk decompositions of cluster and field galaxies on deep VLT/FORS2 images of 18 optically-selected clusters at 0.45 < z < 0.80 from the ESO Distant Cluster Survey (EDisCS). Morphological content is given by the early-type galaxy fraction f_et, and early-type galaxies are selected based on their bulge fraction and image smoothness. A set of 158 SDSS clusters is analyzed exactly as the EDisCS sample to provide a robust local comparison. Our main results are: (1) f_et values for the SDSS and EDisCS clusters exhibit no clear trend as a function of sigma. (2) Mid-z EDisCS clusters around sigma = 500 km/s have f_et ~= 0.5 whereas high-z EDisCS clusters have f_et ~= 0.4 (~25% increase over 2 Gyrs). (3) There is a marked difference in the morphological content of EDisCS and SDSS clusters. None of the EDisCS clusters have f_et greater than 0.6 whereas half of the SDSS clusters lie above this value. This difference is seen in clusters of all velocity dispersions. (4) There is a strong correlation between morphology and star formation in SDSS and EDisCS clusters. This correlation holds independent of sigma and z even though the fraction of [OII] emitters decreases from z~0.8 to z~0.06 in all environments. Our results pose an interesting challenge to structural transformation and star formation quenching processes that strongly depend on the global cluster environment and suggest that cluster membership may be of lesser importance than other variables in determining galaxy properties. (ABRIDGED)

22 pages, 10 figures, accepted for publication in A&A

References in corpus (21)

• The hierarchical formation of the brightest cluster galaxies
• Galaxy Zoo: the dependence of morphology and colour on environment
• How special are Brightest Group and Cluster Galaxies?
• The build-up of the colour-magnitude relation in galaxy clusters since z~0.8
• A Wide-field Survey of Two Z~0.5 Galaxy Clusters: Identifying the Physical Processes Responsible for the Observed Transformation of Spirals into S0s
• The relation between star formation, morphology and local density in high redshift clusters and groups
• The environments of starburst and post-starburst galaxies at z=0.4-0.8
• A Catalogue of Morphologically Classified Galaxies from the Sloan Digital Sky Survey: North Equatorial Region
• Clusters at Half Hubble Time: Galaxy Structure and Colors in RXJ0152.7-1357 and MS1054-03
• The evolution of spiral, S0 and elliptical galaxies in clusters
• The mass-metallicity relation in galaxy clusters: the relative importance of cluster membership versus local environment
• The Rest-Frame Optical Luminosity Function of Cluster Galaxies at z<0.8 and the Assembly of the Cluster Red Sequence
• The Evolution of the Field and Cluster Morphology-Density Relation for Mass-Selected Samples of Galaxies
• Spectroscopy of clusters in the ESO distant cluster survey (EDisCS).II. Redshifts, velocity dispersions, and substructure for clusters in the last 15 fields
• Mass-Selection and the Evolution of the Morphology-Density Relation from z=0.8 to z=0
• Frequency and properties of bars in cluster and field galaxies at intermediate redshifts
• RASS-SDSS Galaxy Cluster Survey. VI. The dependence of the cluster SFR on the cluster global properties
• Forming Early-type Galaxies in Groups Prior to Cluster Assembly
• The X-ray properties of optically-selected z>0.6 clusters in the ESO Distant Cluster Survey
• Galaxy morphologies and environment in the Abell 901/902 supercluster from COMBO-17
• Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17

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• A Catalog of Bulge+Disk Decompositions and Updated Photometry for 1.12 Million Galaxies in the Sloan Digital Sky Survey
• The environmental history of group and cluster galaxies in a LambdaCDM Universe
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• Tracking the impact of environment on the Galaxy Stellar Mass Function up to z~1 in the 10k zCOSMOS sample
• The ATLAS3D project - XVII. Linking photometric and kinematic signatures of stellar discs in early-type galaxies
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• Evolutionary paths among different red galaxy types at 0.3 < z < 1.5 and the late buildup of massive E-S0's through major mergers
• The evolution of early-type galaxies in clusters from z~ 0.8 to z~ 0: the ellipticity distribution and the morphological mix
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• What determines the fraction of elliptical galaxies in clusters?
• The complex case of MACSJ0717.5+3745 and its extended filament: intra-cluster light, galaxy luminosity function, and galaxy orientations
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• Ionized gas disks in elliptical and S0 galaxies at $z<1$
• Satellite quenching and morphological transformation of galaxies in groups and clusters
• Studying the evolution of galaxies in compact groups over the past 3 Gyr. I. The nuclear activity
• Galaxy clusters in the SDSS Stripe 82 based on galaxy photometric redshifts
• The effect of the environment on the structure, morphology and star-formation history of intermediate-redshift galaxies
• A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z $\sim$ 0.4
• Measuring the Total Ultraviolet Light from Galaxy Clusters at z=0.5-1.6: The Balance of Obscured and Unobscured Star-Formation
• A Multi-Wavelength Study of Low Redshift Cluster of Galaxies II. Environmental Impact on Galaxy Growth
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• The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey II. X-ray and optical properties of the cluster sample
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