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We have developed a new evolutionary synthesis code, which incorporates the output from chemical evolution models. We compare results of this new code with other published codes, and we apply it to the irregular galaxy NGC 1560 using…

Astrophysics · Physics 2009-11-07 Gerardo A. Vazquez , Leticia Carigi , J. J. Gonzalez

We have studied the viability of new theoretical models which combine a chemical evolution code, an evolutionary synthesis code and a photoionization code, to understand the star formation and evolution of H{\sc ii} galaxies. The emission…

Astrophysics · Physics 2007-12-04 M. Martín Manjón , M. Mollá , A. I. Díaz

gemlib is a Python library for defining, simulating, and calibrating Markov state-transition models. Stochastic models are often computationally intensive, making them impractical to use in pandemic response efforts despite their favourable…

Computation · Statistics 2025-11-12 Alin Morariu , Jess Bridgen , Chris Jewell

Chemical evolution models are powerful tools for interpreting stellar abundance surveys and understanding galaxy evolution. However, their predictions depend heavily on the treatment of inflow, outflow, star formation efficiency (SFE), the…

Astrophysics of Galaxies · Physics 2017-02-08 Brett H. Andrews , David H. Weinberg , Ralph Schönrich , Jennifer A. Johnson

Recent observations of carbon, sulphur, and titanium isotopes at redshifts z~1 and in the local stellar disc and halo have opened a new window into the study of isotopic abundance patterns and the origin of the chemical elements. Using our…

Astrophysics · Physics 2009-11-13 G. L. Hughes , B. K. Gibson , L. Carigi , P. Sanchez-Blazquez , J. M. Chavez , D. L. Lambert

We discuss the main ingredients necessary to build models of chemical evolution of spiral galaxies and in particular the Milky Way galaxy. These ingredients include: the star formation rate, the initial mass function, the stellar yields and…

Astrophysics · Physics 2007-05-23 Francesca Matteucci

In a 1$^{\rm st}$ step I present results from our new set of evolutionary synthesis models for Simple (= single burst) Stellar Populations ({\bf SSP}s) of various metallicities, and in a 2$^{\rm nd}$ step I combine these results with the…

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

Comprehensive and confident identifications of metabolites and other chemicals in complex samples will revolutionize our understanding of the role these chemically diverse molecules play in biological systems. Despite recent advances,…

We consider the problem of Bayesian inference in the family of probabilistic models implicitly defined by stochastic generative models of data. In scientific fields ranging from population biology to cosmology, low-level mechanistic…

We simulate the dynamical and chemical evolution of a dwarf galaxy embedded in a dark matter halo, using a three-dimensional N-body/SPH simulation code combined with stellar population synthesis. The initial condition is adopted in accord…

Astrophysics · Physics 2016-08-30 Masao Mori , Yuzuru Yoshii , Takuji Tsujimoto , Ken'ichi Nomoto

In this paper we report on PD-SPH the new tree-sph code developed in Padua. The main features of the code are described and the results of a new and independent series of 1-D and 3-D tests are shown. The paper is mainly dedicated to the…

Astrophysics · Physics 2009-10-30 Giovanni Carraro , Cesario Lia , Cesare Chiosi

We introduce NSC++, a header-only C++ library that simulates the evolution of the plasma and a decaying fluid in the early Universe. NSC++ can be used in C++ programs or called directly from python scripts without significant overhead.…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-26 Dimitrios Karamitros

Galaxies evolve via a complex interaction of numerous different physical processes, scales and components. In spite of this, overall trends often appear. Simplified models for galaxy histories can be used to search for and capture such…

Astrophysics of Galaxies · Physics 2018-05-16 J. D. Cohn

We provide yields from 189 neutrino-driven core-collapse supernova (CCSN) simulations covering zero-age main sequence masses between 11 and 75 solar masses and three different metallicities. Our CCSN simulations have two main advantages…

High Energy Astrophysical Phenomena · Physics 2025-01-15 Finia P. Jost , Marta Molero , Gerard Navó , Almudena Arcones , Martin Obergaulinger , Francesca Matteucci

The last decade showed an impressive observational effort from the photometric and spectroscopic point of view for ancient stellar clusters in our Galaxy and beyond. The theoretical interpretation of these new observational results requires…

Solar and Stellar Astrophysics · Physics 2013-06-06 M. Dell'Omodarme , G. Valle , S. Degl'Innocenti , P. G. Prada Moroni

The formalism of the simple model of galactic chemical evolution (GCE) and its main ingredients (stellar properties, initial mass function, star formation rate and gas flows) are presented in this tutorial. It is stressed that GCE is not…

Astrophysics · Physics 2009-11-13 Nikos Prantzos

The chemical abundances of stars in galaxies are a fossil record of the star formation and stellar evolution processes that regulate galaxy formation, including the stellar initial mass function, the fraction and timing of type Ia…

We develop an extension of subhalo abundance matching (SHAM) capable of accurately reproducing the real and redshift-space clustering of galaxies in a state-of-the-art hydrodynamical simulation. Our method uses a low-resolution gravity-only…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-22 Sergio Contreras , Raul Angulo , Matteo Zennaro

We study the chemodynamical evolution of elliptical galaxies and their X-ray and optical properties using high-resolution cosmological simulations. Our Tree N-body/SPH code includes a self-consistent treatment of radiative cooling, star…

Astrophysics · Physics 2009-11-10 Daisuke Kawata , Brad K. Gibson

We computed the chemical evolution of Seyfert galaxies, residing in spiral bulges, based on an updated model for the Milky Way bulge with updated calculations of the Galactic potential and of the feedback from the central supermassive black…

Astrophysics · Physics 2009-11-13 S. K. Ballero , F. Matteucci , L. Ciotti
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