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A full appreciation of the role played by gas metallicity (Z), star-formation rate (SFR), and stellar mass is fundamental to understanding how galaxies form and evolve. The connections between these three parameters at different redshifts…

A tightly correlated star formation rate-stellar mass relation of star forming galaxies, or star-forming sequence (SFS), is a key feature in galaxy property-space that is predicted by modern galaxy formation models. We present a flexible…

The interplay of star formation and supernova (SN) feedback in galaxy formation is a key element for understanding galaxy evolution. Since these processes occur at small scales, it is necessary to have sub-grid models that recover their…

Astrophysics of Galaxies · Physics 2022-09-15 Arturo Nuñez-Castiñeyra , Emmanuel Nezri , Julien Devriendt , Romain Teyssier

We use galaxy and dark halo data from the public database for the Millennium Simulation to study the growth of galaxies in the De Lucia et al. (2006) model for galaxy formation. Previous work has shown this model to reproduce many aspects…

Astrophysics · Physics 2009-11-13 Qi Guo , Simon D. M. White

The field of high redshift galaxy formation has been revolutionised by JWST, which is yielding unprecedented insights on galaxy assembly at early times. Our key aim is to study the physical mechanisms that can explain the unexpected…

Astrophysics of Galaxies · Physics 2025-04-23 Valentin Mauerhofer , Pratika Dayal , Martin G. Haehnelt , Taysun Kimm , Joakim Rosdahl , Romain Teyssier

We present results from the semi-analytic model of galaxy formation SAG applied on the MultiDark simulation MDPL2. SAG features an updated supernova (SN) feedback scheme and a robust modelling of the environmental effects on satellite…

Semi-analytic models are a widely used approach to simulate galaxy properties within a cosmological framework, relying on simplified yet physically motivated prescriptions. They have also proven to be an efficient alternative for generating…

We use the cosmological semi-analytic model (SAM) for galaxy formation presented in Paper I to study the metallicities and abundance ratios of the intracluster medium (ICM) within the hierarchical structure formation paradigm. By requiring…

Cosmology and Nongalactic Astrophysics · Physics 2010-06-09 Matías Arrigoni , Scott C. Trager , Rachel S. Somerville

We present first results from three-dimensional hydrodynamic simulations of the high redshift formation of dwarf galaxies. The simulations use an Eulerian adaptive mesh refinement technique to follow the non-equilibrium chemistry of…

Astrophysics · Physics 2009-11-07 Konstantinos Tassis , Tom Abel , Greg L. Bryan , Michael L. Norman

We present a novel methodology to improve predictions of galaxy formation histories by incorporating semi-stochastic corrections to account for short-timescale variability. Our paper addresses limitations in existing models that capture…

Astrophysics of Galaxies · Physics 2025-07-24 Jayashree Behera , Rita Tojeiro , Harry George Chittenden

We present a direct comparison between the observed star formation rate functions (SFRF) and the state-of-the-art predictions of semi-analytic models (SAM) of galaxy formation and evolution. We use the PACS Evolutionary Probe Survey (PEP)…

This paper presents the first results from a model for chemical evolution that can be applied to N-body cosmological simulations and quantitatively compared to measured stellar abundances from large astronomical surveys. This model…

Astrophysics of Galaxies · Physics 2015-09-29 Brian D. Crosby , Brian W. O'Shea , Timothy C. Beers , Jason Tumlinson

LCDM is remarkably successful in predicting the cosmic microwave background and large-scale structure, and LCDM parameters have been determined with only mild tensions between different types of observations. Hydrodynamical simulations…

Astrophysics of Galaxies · Physics 2015-05-13 Joel R. Primack

We apply Monte Carlo Markov Chain (MCMC) methods to large-scale simulations of galaxy formation in a LambdaCDM cosmology in order to explore how star formation and feedback are constrained by the observed luminosity and stellar mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Bruno Henriques , Simon White , Peter Thomas , Raul Angulo , Qi Guo , Gerard Lemson , Volker Springel

We examine the past and current work on the star formation (SF) histories of dwarf galaxies in cosmological hydrodynamic simulations. The results obtained from different numerical methods are still somewhat mixed, but the differences are…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-13 Kentaro Nagamine

We present a new, open source, free semi-analytic model (SAM) of galaxy formation, Shark, designed to be highly flexible and modular, allowing easy exploration of different physical processes and ways of modelling them. We introduce the…

Understanding how galaxy populations emerge and evolve from the growth of dark matter structure is a central challenge in galaxy formation theory. Semi-analytic models (SAMs) provide an efficient framework to address this problem, but…

Astrophysics of Galaxies · Physics 2026-05-05 Xuejie Li , Zhongxu Zhai , Xiaohu Yang , Andrew Benson , Yun Wang

We present chemodynamical simulations of a Milky Way-type galaxy using a self-consistent hydrodynamical code that includes supernova feedback and chemical enrichment, and predict the spatial distribution of elements from Oxygen to Zinc. In…

Astrophysics of Galaxies · Physics 2015-05-20 Chiaki Kobayashi , Naohito Nakasato

Cosmological hydrodynamical simulations of galaxy evolution are increasingly able to produce realistic galaxies, but the largest hurdle remaining is in constructing subgrid models that accurately describe the behavior of stellar feedback.…

Astrophysics of Galaxies · Physics 2015-06-12 Cameron Hummels , Greg Bryan , Britton Smith , Matthew Turk

We present a pipeline to estimate baryonic properties of a galaxy inside a dark matter (DM) halo in DM-only simulations using a machine trained on high-resolution hydrodynamic simulations. As an example, we use the IllustrisTNG hydrodynamic…

Astrophysics of Galaxies · Physics 2019-10-03 Yongseok Jo , Ji-hoon Kim