524 citations · 7.7k across the 95 of their papers we have counts for
6 papers · 2 filters
Tracing the evolution of massive galaxies up to z \sim 3
M. Longhetti, P. Saracco, S. Cristiani +4
A census of massive galaxies at redshift increasingly higher than 1 may provide strong constraints on the history of mass assembly and of star formation. Here we report on t…
Photometric redshifts with the Multilayer Perceptron Neural Network: application to the HDF-S and SDSS
E. Vanzella, S. Cristiani, A. Fontana +8
We present a technique for the estimation of photometric redshifts based on feed-forward neural networks. The Multilayer Perceptron (MLP) Artificial Neural Network is used to predi…
Early Hierarchical Formation of Massive Galaxies Triggered By Interactions
N. Menci, A. Cavaliere, A. Fontana +3
To address the problem concerning the early formation of stars in massive galaxies, we present the results of a semi-analytic model of galaxy formation which includes a physical de…
Near-IR bright galaxies at z~2. Entering the spheroid formation epoch ?
E. Daddi, A. Cimatti, A. Renzini +11
Spectroscopic redshifts have been measured for 9 K-band luminous galaxies at 1.7 < z < 2.3, selected with Ks < 20 in the "K20 survey" region of the Great Observatories Origins Deep…
The assembly of massive galaxies from NIR observations of the Hubble Deep Field South
A. Fontana, I. Donnarumma, E. Vanzella +7
We use a deep K(AB)<25 galaxy sample in the Hubble Deep Field South to trace the evolution of the cosmological stellar mass density from z~ 0.5 to z~3. We find clear evidence for a…
Quasar Evolution Driven by Galaxy Encounters in Hierarchical Structures
N. Menci, A. Cavaliere, A. Fontana +3
We link the evolution of the galaxies in the hierarchical clustering scenario with the changing accretion rates of cold gas onto the central massive black holes that power the quas…