author = "Matteucci F."

Found 125 documents, displaying page 3 of 13

Evolution with redshift of the ICM abundances

Description : We predict the behaviour of the abundances of ff- elements and iron in the intracluster medium (ICM) as a function of redshift in poor and rich clusters. In order to do that we calculate the detailed chemical evolution of elliptical galaxies by means of one-zone and multi-zone models and then we int...
Repository : Infoscience
Language(s) : English

The Effects of radial inflow of gas and galactic fountains on the chemical evolution of M31

Description : Galactic fountains and radial gas flows are very important ingredients in modeling the chemical evolution of galactic disks. Our aim here is to study the effects of galactic fountains and radial gas flows in the chemical evolution of the disk of M31. We adopt a ballistic method to study the effect...
Repository : arXiv
Language(s) : Undetermined

The dust properties of z ~ 3 MIPS-LBGs from photo-chemical models

Description : The stacked spectral energy distribution (SED) of Multiband Imaging Photometer for Spitzer (MIPS) 24$\mu m$ detected Lyman break galaxies (MIPS-LBGs) is fitted by means of spectro-photometric model GRASIL with an "educated" fitting approach which benefits from results of chemical evolution models....
Repository : arXiv
Language(s) : Undetermined

The mass surface density in the local disk and the chemical evolution of the Galaxy

Description : We have studied the effect of adopting different values of the total baryonic mass surface density in the local disk at the present time in a model for the chemical evolution of the Galaxy. We have compared our model results with the G-dwarf metallicity distribution, the amounts of gas, stars, ste...
Repository : arXiv
Language(s) : Undetermined

Galactic Winds in Starburst Irregular Galaxies

Description : In this paper we present some results of numerical simulations concerning the development of galactic winds in starburst galaxies. In particular, we focus on a galaxy similar to IZw18, the most metal-poor galaxy locally known. We compute the chemio-dynamical evolution of this galaxy, considering t...
Repository : arXiv
Language(s) : Undetermined

Chemical Enrichment and Energetics of the ICM with Redshift

Description : In this paper we show preliminary results concerning the chemical and energetic enrichment of the ICM by means of supernova-driven wind models in elliptical galaxies. These models are obtained by taking into account new prescriptions about supernova remnant evolution in the interstellar medium. We...
Repository : arXiv
Language(s) : Undetermined

K dwarfs and the chemical evolution of the Solar cylinder

Description : K-dwarfs have life-times older than the present age of the Galactic disc, and are thus ideal stars to investigate the disc's chemical evolution. We have developed several photometric metallicity indicators for K dwarfs, based an a sample of accurate spectroscopic metallicities for 34 disc and halo...
Repository : arXiv
Language(s) : Undetermined

Chemical evolution and nature of Damped Lyman-Alpha systems

Description : We study the nature of Damped Lyman -Alpha systems (DLAs) by means of a comparison between observed abundances and models of chemical evolution of galaxies of different morphological type. In particular, we compare for the first time the abundance ratios as functions of metallicity and redshift wi...
Repository : arXiv
Language(s) : Undetermined

Cosmic Star Formation: Constraints on the Galaxy Formation Models

Description : We study the evolution of the cosmic star formation by computing the luminosity density (LD) in the UV, B, J, and K bands, and the stellar mass density (MD) of galaxies in two reference models of galaxy evolution: the pure luminosity evolution (PLE) model developed by Calura & Matteucci (2003) and...
Repository : arXiv
Language(s) : Undetermined

The origin of nitrogen: Implications of recent measurements of N/O in Galactic metal-poor stars

Description : Recent new high-precision abundance data for Galactic halo stars suggest important primary nitrogen production in very metal-poor massive stars. Here, we compute a new model for the chemical evolution of the Milky Way aimed at explaining these new abundance data. The new data can be explained by a...
Repository : arXiv
Language(s) : Undetermined

Found 125 documents, displaying page 3 of 13