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Based on a new large, homogeneous photometric database of 34 Galactic globular clusters (GGCs plus Palomar 12), a set of distance- and reddening- independent relative age indicators has been measured. The observed δ(V-I)2.5 and ΔVHBTO versus metallicity relations have been compared with the relations predicted by two recently updated libraries of

The diffuse soft X-ray emissivity from galactic winds is computed during the Epoch of Reionization (EoR). We consider two analytic models, a pressure-driven wind and a superbubble model, and a 3D cosmological simulation including gas dynamics from the First Billion Years (FiBY) project. The analytic models are normalized to match the diffuse X-ray

We present the first results of hydrodynamical simulations that follow the formation of galaxies to the present day in nearly spherical regions of radius ~20h-1Mpc drawn from the Millennium Simulation (Springel et al.). The regions have mean overdensities that deviate by (-2, -1, 0, +1, +2)σ from the cosmic mean, where σ is the rms mass fluctuation

IR spectroscopy in the range 12-230 μm with the SPace IR telescope for Cosmology and Astrophysics (SPICA) will reveal the physical processes governing the formation and evolution of galaxies and black holes through cosmic time, bridging the gap between the James Webb Space Telescope and the upcoming Extremely Large Telescopes at shorter wavelengths

The gamma radiolysis of fullerene C-60 dispersed in H2O, H2O/NH3, H2O/methanol and H2O/NH3/methanol was studied at 250 and 500 kGy. It was found that C-60 originally insoluble in the above mentioned hosting matrix became soluble as a consequence of multiple hydroxylation and oxidation reaction produced by the free radicals generated by the