20 papers
The Rest-Frame FUV Morphologies of Star-Forming Galaxies at z ~ 1.5 and z ~ 4
J. M. Lotz, P. Madau, M. Giavalisco +2
We apply a new approach to quantifying galaxy morphology and identifying galaxy mergers to the rest-frame far-ultraviolet images of 82 z ~ 4 Lyman break galaxies (LBGs) and 55 1.2…
Early Structure Formation and the Epoch of First Light
Piero Madau
In popular cold dark matter cosmological scenarios, stars may have first appeared in significant numbers around a redshift of 10 or so, as the gas within protogalactic halos with v…
Modelling the uv/x-ray cosmic background with CUBA
Francesco Haardt, Piero Madau
In this paper, I will describe the features of the numerical code CUBA, aimed at the solution of the radiative transfer equation in a cosmological context. CUBA will be soon availa…
Extragalactic Background Light, MACHOs, and the Cosmic Stellar Baryon Budget
Piero Madau, Francesco Haardt, Lucia Pozzetti
The optical/far-IR extragalactic background light (EBL) from both resolved and unresolved extragalactic sources is an indicator of the total luminosity of cosmic structures, as the…
The Optical Extragalactic Background Light from Resolved Galaxies
Lucia Pozzetti, Piero Madau
We discuss the ultraviolet to near-IR galaxy counts from the deepest imaging surveys, including the northern and southern Hubble Deep Fields. The logarithmic slope of the galaxy nu…
Probing the End of the Dark Ages
Piero Madau
In currently popular cosmological scenarios -- all variants of the cold dark matter (CDM) cosmogony -- some time beyond a redshift of 15, stars within the numerous small halos that…