11 papers
The evolution of the color gradients of early-type cluster galaxies
R. P. Saglia, C. Maraston, L. Greggio +2
We investigate the origin of color gradients in cluster early-type galaxies to probe whether pure age or pure metallicity gradients can explain the observed data in local and dista…
Spectra of High Redshift Galaxies using a Cluster as a Gravitational Telescope
D. Mehlert, S. Seitz, R. P. Saglia +7
Using the Focal Reducer Spectrograph (FORS) at the Very Large Telescope (VLT) during the FORS commissioning time in December 1998 we took long slit spectra of the gravitational arc…
EFAR peculiar velocities and bulk motions
Matthew Colless, R. P. Saglia, David Burstein +3
The EFAR project has measured peculiar motions in two distant volumes of the universe using Fundamental Plane (FP) distances for 85 clusters with cz=6000-15000 km/s. The scatter in…
Probing early-type galaxy evolution with the Kormendy relation
B. L. Ziegler, R. P. Saglia, R. Bender +3
We investigate the evolution of early-type galaxies in four clusters at z=0.4 (Abell370, Cl0303+17, Cl0939+47 and Cl1447+26) and in one at z=0.55 (Cl0016+16). The galaxies are sele…
Elliptical Galaxies: Detailed Structure, Scaling Relations and Formation
Ralf Bender, Roberto P. Saglia
The last decade of research on elliptical galaxies has produced a wealth of new information concerning both their detailed structure and their global scaling relations. We review t…
Dynamical analysis of elliptical galaxy halos
Andi Kronawitter, Ortwin E. Gerhard, R. P. Saglia +1
We describe a non-parametric method for determining both the anisotropy and mass profiles of elliptical galaxies from velocity dispersions and velocity profile shapes along the lin…