Evolution of early-type galaxies in field and cluster environments at z = 1
نویسنده
چکیده
xiii
منابع مشابه
0 The Fundamental Plane of Gravitational Lens Galaxies and The Evolution of Early - Type Galaxies in Low Density Environments
Most gravitational lenses are early-type galaxies in relatively low density environments – a " field " rather than a " cluster " population. Their average properties are the mass-averaged properties of all early-type galaxies. We show that field early-type galaxies with 0 < z < 1, as represented by the lens galaxies, lie on the same fundamental plane as those in rich clusters at similar redshif...
متن کاملThe Influence of Mass and Environment on the Evolution of Early-Type Galaxies
We report on a uniform comparative analysis of the fundamental parameters of early–type galaxies at z∼1 down to MB ≤ −20, both in the field and in the clusters. The changes in the M/LB ratio from z∼1 to today are larger for lower mass galaxies in all environments, and are larger in the field than in the clusters for galaxies with the same mass. By deriving ages from the M/LB ratio, we estimate ...
متن کاملLuminosity Evolution of Field Early-type Galaxies to Z = 0.55
We study the Fundamental Plane (FP) of field early-type galaxies at intermediate redshift, using HST WFPC2 observations and deep Keck spectroscopy. Structural parameters and internal velocity dispersions are measured for eighteen galaxies at 0.15 < z < 0.55. Rest frame M⁄ LB ratios are determined from the Fundamental Plane and compared to those of cluster early-type galaxies at the same redshif...
متن کاملThe fundamental plane of EDisCS galaxies
We study the evolution of spectral early-type galaxies in clusters, groups, and the field up to redshift 0.9 using the ESO Distant Cluster Survey (EDisCS) dataset. We measure structural parameters (circularized half-luminosity radii Re, surface brightness Ie, and velocity dispersions σ) for 154 cluster and 68 field galaxies. On average, we achieve precisions of 10% in Re, 0.1 dex in log Ie, and...
متن کامل2 Evolution of Field Early - Type Galaxies
We study the Fundamental Plane (FP) of field early-type galaxies at intermediate redshift, using HST WFPC2 observations and deep Keck spectroscopy. Structural parameters and internal velocity dispersions are measured for eighteen galaxies at 0.15 < z < 0.55. Rest frame M⁄ LB ratios are determined from the Fundamental Plane and compared to those of cluster early-type galaxies at the same redshif...
متن کامل