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Understanding the spatio-temporal evolution of radiolytic species created by high-energy electrons in water underpins key applications from radiotherapy and nuclear safety to environmental processing and electron microscopy. Here, using the…

Chemical Physics · Physics 2026-01-06 Charlie Fynn Perkins , Marcus Webb , Fred J. Currell

The aim of this work is to present our new series of chemical evolution models computed for spiral and low mass galaxies of different total masses and star formation efficiencies. We analyze the results of models, in particular the…

Astrophysics of Galaxies · Physics 2016-12-13 M. Mollá , A. I. Díaz , Y. Ascasibar , B. K. Gibson , O. Cavichia , R. D. D. Costa , W. J. Maciel

We have undertaken a large set of simulations of galaxy interactions and mergers (GalMer Project) in order to study the physical processes related to galaxy encounters. All morphological types along the Hubble sequence are considered in the…

Astrophysics · Physics 2007-09-18 P. Di Matteo , F. Combes , I. Chilingarian , A. -L. Melchior , B. Semelin

In this series of lectures we first describe the basic ingredients of galactic chemical evolution and discuss both analytical and numerical models. Then we compare model results for the Milky Way, Dwarf Irregulars, Quasars and the…

Astrophysics · Physics 2007-05-23 Francesca Matteucci

Simple MCBR models of chemical evolution are extended to the limit of dominant gas inflow or outflow with respect to gas locked up into long-lived stars and remnants. For an assigned empirical differential oxygen abundance distribution,…

Astrophysics of Galaxies · Physics 2013-01-15 R. Caimmi

Any stellar system with a star formation history (SFH) more extended than a massive star's lifetime will be composite in metallicity. Our method of chemically consistent evolutionary synthesis tries to account for the increasing initial…

Astrophysics · Physics 2007-05-23 U. Fritze-v. Alvensleben

Numerical models for the chemical evolution of the Galaxy have been computed with the new stellar yields published by Maeder (1992). These metallicity dependent yields represent an important improvement in the chemical evolution of galaxies…

Astrophysics · Physics 2015-06-24 A. Giovagnoli , M. Tosi

(Abridged) We analyze the evolution of 42 spiral galaxies in the Spitzer Infrared Nearby Galaxies Survey, using extinction-corrected UV, optical and near-infrared radial profiles to probe the emission of stars of different ages as a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 J. C. Muñoz-Mateos , S. Boissier , A. Gil de Paz , J. Zamorano , R. C. Kennicutt , J. Moustakas , N. Prantzos , J. Gallego

To gain deeper insights into galaxy evolution and the mechanisms driving transitions between different galaxy morphologies, we analyse the connection between star formation rate and stellar mass for 231 galaxies spanning Hubble types E1-Sdm…

Astrophysics of Galaxies · Physics 2026-02-23 Veselina Kalinova , Keiichi Kodaira , Dario Colombo

We model the star formation history (SFH) and the chemical evolution of the Galactic disk by combining an infall model and a limit-cycle model of the interstellar medium (ISM). Recent observations have shown that the SFH of the Galactic…

Astrophysics · Physics 2009-11-06 H. Hirashita , A. Burkert , T. T. Takeuchi

Galactic chemical evolution is a topic that involves nuclear physics, stellar evolution, galaxy evolution, observation, and cosmology. Continuous communication and feedback between these fields is a key component in improving our…

We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy. Then we present a recent chemical evolution model for M31 including radial gas flows and galactic fountains along the…

Astrophysics of Galaxies · Physics 2018-03-14 F. Matteucci , E. Spitoni

The evolving galaxy is considered as a system of baryonic fragments embedded into the static dark nonbaryonic (DH) and baryonic (BH) halo and subjected to gravitational and viscous interactions. Although the chemical evolution of each…

Astrophysics · Physics 2009-10-31 Peter Berczik , Sergei Kravchuk

Recent stellar evolution models for globular clusters (GCs) in multiple population paradigm suggest that horizontal-branch (HB) morphology and mean period of type ab RR Lyrae variables are mostly determined by He & CNO abundances and…

Astrophysics of Galaxies · Physics 2020-01-08 Sohee Jang , Jenny J. Kim , Young-Wook Lee

We present a new set of theoretical evolutionary synthesis models, PopStar. This grid of Single Stellar Populations covers a wide range in both, age and metallicity. The models use the most recent evolutionary tracks together with the use…

Observations of star formation rates (SFRs) in galaxies provide vital clues to the physical nature of the Hubble sequence, and are key probes of the evolutionary properties of galaxies. The focus of this review is on the broad patterns in…

Astrophysics · Physics 2012-08-27 Robert C. Kennicutt,

We present the modules for stellar nucleosynthesis, stellar mass loss, and turbulent diffusion of the new COLIBRE subgrid model for cosmological hydrodynamical simulations of galaxy formation. COLIBRE models the thermal evolution of the…

We follow the chemical evolution of the Galaxy for the s elements using a Galactic chemical evolution (GCE) model, as already discussed by Travaglio et al. (1999, 2001, 2004), with a full updated network and refined asymptotic giant branch…

Solar and Stellar Astrophysics · Physics 2014-11-20 A. Serminato , R. Gallino , C. Travaglio , S. Bisterzo , O. Straniero

We study the old problem of the uniqueness of chemical evolution models by analyzing a set of multiphase models for the galaxy NGC 4303 computed for a variety of plausible physical input parameters. Our aim is to determine if the input…

Astrophysics · Physics 2007-05-23 Mercedes Molla , Eduardo Hardy

In this paper we present some test results of our newly developed Multi-Phase Chemo-Dynamical Smoothed Particle Hydrodynamics (MP- CD-SPH) code for galaxy evolution. At first, we present a test of the ``pure'' hydro SPH part of the code.…

Astrophysics · Physics 2009-11-07 P. Berczik , G. Hensler , Ch. Theis , R. Spurzem
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