The impact of feedback on the low redshift Intergalactic Medium (2009)
Tornatore, Luca, Borgani, Stefano, Viel, Matteo, Springel, Volker
We analyse the evolution of the properties of the low-redshift Intergalactic Medium (IGM) using high-resolution hydrodynamic simulations that include a detailed chemical evolution model. We focus on...
The onset of star formation in primordial haloes (2009)
Maio, Umberto, Ciardi, Benedetta, Yoshida, Naoki, Dolag, Klaus, Tornatore, Luca
Star formation remains an unsolved problem in astrophysics. Numerical studies of large-scale structure simulations cannot resolve the whole process and their approach usually assumes that only gas...
Damped Lyman-alpha systems in high-resolution hydrodynamical simulations (2009)
Tescari, Edoardo, Viel, Matteo, Tornatore, Luca, Borgani, Stefano
We investigate the properties of Damped Lyman-alpha systems (DLAs) using high-resolution and large box-size cosmological hydrodynamical simulations of a LambdaCDM model. The numerical code used is a...
Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations (2009)
Wiersma, Robert P. C., Schaye, Joop, Theuns, Tom, Vecchia, Claudio Dalla, Tornatore, Luca
(Abridged) We present an implementation of stellar evolution and chemical feedback for smoothed particle hydrodynamics (SPH) simulations. We consider the timed release of individual elements by both...
X-MAS2: Study Systematics on the ICM Metallicity Measurements (2008)
Rasia, Elena, Mazzotta, Pasquale, Bourdin, Herve, Borgani, Stefano, Tornatore, Luca, Ettori, Stefano, ...
X-ray measurements of the intracluster medium metallicity are becoming more and more frequent due to the availability of powerful X-ray telescopes with excellent spatial and spectral resolutions. The...
On the dynamical origin of the ICM metallicity evolution (2008)
Cora, Sofia A., Tornatore, Luca, Tozzi, Paolo, Dolag, Klaus
We present a study on the origin of the metallicity evolution of the intra-cluster medium (ICM) by applying a semi-analytic model of galaxy formation to N-body/SPH (smoothed particle hydrodynamic)...
How does gas cool in dark matter haloes? (2008)
Viola, M., Monaco, Pierluigi, Borgani, Stefano, Murante, Giuseppe, Tornatore, Luca
In order to study the process of cooling in dark-matter (DM) halos and assess how well simple models can represent it, we run a set of radiative SPH hydrodynamical simulations of isolated halos, with...
Population III stars: hidden or disappeared? (2007)
Tornatore, Luca, Ferrara, Andrea, Schneider, Raffaella
A Population III/Population II transition from massive to normal stars is predicted to occur when the metallicity of the star forming gas crosses the critical range Z_cr = 10^(-5 +/- 1) Z_sun. To...
Chemical enrichment of galaxy clusters from hydrodynamical simulations (2007)
Tornatore, Luca, Borgani, Stefano, Dolag, Klaus, Matteucci, Francesca
We present cosmological hydrodynamical simulations of galaxy clusters aimed at studying the process of metal enrichment of the intra-cluster medium (ICM). These simulations have been performed by...
Borgani, Stefano, Dolag, Klaus, Murante, Giuseppe, Cheng, L.M., Springel, Volker, Diaferio, Antonaldo, ...
We discuss an extended set of Tree+SPH simulations of galaxy clusters, with the goal of investigating the interplay between numerical resolution effects and star-formation/feedback processes. The...
Properties of the galaxy population in hydrodynamical simulations of clusters (2007)
Saro, Alexandro, Borgani, Stefano, Tornatore, Luca, Dolag, Klaus, Murante, Giuseppe, Biviano, Andrea, ...
We present a study of the galaxy population predicted by hydrodynamical simulations for a set of 19 galaxy clusters based on the GADGET-2 Tree+SPH code. These simulations include gas cooling, star...
Metal and molecule cooling in simulations of structure formation (2007)
Maio, Umberto, Dolag, Klaus, Ciardi, Benedetta, Tornatore, Luca
Cooling is the main process leading to the condensation of gas in the dark matter potential wells and consequently to star and structure formation. In a metal-free environment, the main available...