6 papers
The Ages of Early-Type Galaxies at z~1
Sperello di Serego Alighieri, Alessandro Bressan, Lucia Pozzetti
The study of the ages of early-type galaxies and their dependence on galaxy mass and environment is crucial for understanding the formation and early evolution of galaxies. We revi…
Emission line galaxies at z = 6.5
Jaron Kurk, Andrea Cimatti, Sperello di Serego Alighieri +2
We are carrying out a search for Lyman alpha emitting galaxies at z = 6.5 employing slitless spectroscopy at the VLT. In our 43 square arcminute field we find three isolated single…
New Clues on the Nature of Extremely Red Galaxies
A. Cimatti, E. Daddi, S. di Serego Alighieri +7
We present near-infrared VLT-UT1+ISAAC spectroscopy of a sample of 9 extremely red galaxies (ERGs) with R-K>5 and K<19.0. Neither strong emission lines (F_lim<1-5 10^{-16} erg s^{-…
The NV/CIV ratio in high redshift radio galaxies
R. A. E. Fosbury, J. Vernet, M. Villar-Martin +3
Deep Keck spectropolarimetry has been obtained of a sample of powerful radio galaxies with . In addition to a clear 2200Ådust scattering/extinction signature and…
The structure and composition of high redshift radio galaxies
R A E Fosbury, J Vernet, M Villar-Martin +4
Keck spectropolarimetry, giving spectral coverage from Ly- to beyond CIII], and HST imaging of a sample of powerful radio galaxies with \ has been obtained. These data…
Anisotropic [OIII] emission in radio loud AGN
Sperello di Serego Alighieri, Andrea Cimatti, R. A. E. Fosbury +1
We present the results of spectropolarimetry of a sample of 7 powerful radio galaxies and 2 quasars with obtained to detect possible anisotropies in the [OIII] line e…