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astro-ph2005

Two populations of progenitors for type Ia SNe?

F. Mannucci, M. Della Valle, N. Panagia

We use recent observations of type Ia Supernova (SN Ia) rates to derive, on robust empirical grounds, the distribution of the delay time (DTD) between the formation of the progenit…

astro-ph2005

Constraining the thermal history of the Warm-Hot Intergalactic Medium

L. Zappacosta, R. Maiolino, A. Finoguenov +3

We have identified a large-scale structure traced by galaxies at z=0.8, within the Lockman Hole, by means of multi-object spectroscopic observations. By using deep XMM images we ha…

astro-ph2004

Observational tests of the evolution of spheroidal galaxies

Laura Silva, Gianfranco De Zotti, Gian Luigi Granato +2

Granato et al (2004) have elaborated a physically grounded model exploiting the mutual feedback between star-forming spheroidal galaxies and the active nuclei growing in their core…

astro-ph2004

Observational tests of the evolution of spheroidal galaxies and predictions for SIRTF/Spitzer cosmological surveys

Laura Silva, Gianfranco De Zotti, Gian Luigi Granato +2

Granato et al(2004) have elaborated a physically grounded model exploiting the mutual feedback between star-forming spheroidal galaxies and the active nuclei growing in their cores…

astro-ph2004

Connecting the cosmic infrared background to the X-ray background

Laura Silva, Roberto Maiolino, Gian Luigi Granato

We estimate the contribution of AGNs and of their host galaxies to the infrared background. We use the luminosity function and evolution of AGNs recently determined by the hard X-r…