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We introduce a simple analytic model of galaxy formation that links the growth of dark matter haloes in a cosmological background to the build-up of stellar mass within them. The model aims to identify the physical processes that drive the…

Astrophysics of Galaxies · Physics 2020-01-08 Jaime Salcido , Richard G. Bower , Tom Theuns

Semi-analytical models (SAMs) are currently the best way to understand the formation of galaxies within the cosmic dark-matter structures. While they fairly well reproduce the local stellar mass functions, correlation functions and…

Astrophysics of Galaxies · Physics 2015-02-25 Morgane Cousin , Guilaine Lagache , Matthieu Bethermin , Jeremy Blaizot , Bruno Guiderdoni

We present a new cosmological galaxy formation model, $\nu^2$GC, as an updated version of our previous model $\nu$GC. We adopt the so-called "semi-analytic" approach, in which the formation history of dark matter halos is computed by ${\it…

We present an end-to-end description of the formation process of globular clusters (GCs) which combines a treatment for their formation and dynamical evolution within galaxy haloes with a state-of-the-art semi-analytic simulation of galaxy…

A semi-analytic model is proposed that couples the Press-Schechter formalism for the number of galaxies with a prescription for galaxy-galaxy interactions that enables to follow the evolution of galaxy morphologies along the Hubble…

Astrophysics · Physics 2009-11-07 Christophe Balland , Julien E. G. Devriendt , Joe Silk

We describe the GALFORM semi-analytic model for calculating the formation and evolution of galaxies in hierarchical models. It improves upon, and extends, the Cole et al 1994 model. The model employs a new Monte-Carlo algorithm to follow…

Astrophysics · Physics 2009-10-31 Shaun Cole , Cedric Lacey , Carlton Baugh , Carlos Frenk

We calculate the rate at which dark matter halos merge to form higher mass systems. Two complementary derivations using Press-Schechter theory are given, both of which result in the same equation for the formation rate. First, a derivation…

Astrophysics · Physics 2008-11-26 W. J. Percival , L. Miller

We present a variation of the recently updated Munich semi-analytical galaxy formation model, L-Galaxies, with a new gas stripping method. Extending earlier work, we directly measure the local environmental properties of galaxies to…

Astrophysics of Galaxies · Physics 2021-05-12 Mohammadreza Ayromlou , Guinevere Kauffmann , Robert M. Yates , Dylan Nelson , Simon D. M. White

We present a new comprehensive model of the physics of galaxy formation designed for large-scale hydrodynamical simulations of structure formation using the moving mesh code AREPO. Our model includes primordial and metal line cooling with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Mark Vogelsberger , Shy Genel , Debora Sijacki , Paul Torrey , Volker Springel , Lars Hernquist

We develop a hybrid galaxy formation model which uses outputs from an N-body simulation to follow the merger histories (or ``merger trees'') of dark matter halos and treats baryonic processes, such as the cooling of gas within halos and…

We present a new semi-analytic model that self-consistently traces the growth of supermassive black holes (BH) and their host galaxies within the context of the LCDM cosmological framework. In our model, the energy emitted by accreting…

The evolution of the galaxy stellar mass function is especially useful to test the current model of galaxy formation. Observational data have revealed a few inconsistencies with predictions from the $\Lambda {\rm CDM}$ model. For example,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Xi Kang , WeiPeng Lin , Ramin A. Skibba , Dongni Chen

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

One major problem of current theoretical models of galaxy formation is given by their inability to reproduce the apparently `anti-hierarchical' evolution of galaxy assembly: massive galaxies appear to be in place since $z\sim 3$, while a…

Astrophysics of Galaxies · Physics 2016-06-15 Michaela Hirschmann , Gabriella De Lucia , Fabio Fontanot

We investigate the ability of the Croton et al. (2006) semi-analytic model to reproduce the evolution of observed galaxies across the final 7 billion years of cosmic history. Using Monte-Carlo Markov Chain techniques we explore the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Simon J. Mutch , Gregory B. Poole , Darren J. Croton

We model the galaxy formation in a series of high-resolution N-body simulations using the semi-analytical approach. Unlike many earlier investigations based on semi-analytical models, we make use of the subhalos resolved in the $N$-body…

Astrophysics · Physics 2009-10-19 X. Kang , Y. P. Jing , H. J. Mo , G. Boerner

We develop a new formalism for modeling the formation and evolution of galaxies within a hierarchical universe. Similarly to standard semi-analytical models we trace galaxies inside dark-matter merger-trees. The formalism includes treatment…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Eyal Neistein , Simone M. Weinmann

We investigate the properties of the stellar populations of model galaxies as a function of galaxy evolutionary history and angular momentum content. We use the new semi-analytic model presented in Tonini et al. (2016). This new model…

Astrophysics of Galaxies · Physics 2017-01-11 Chiara Tonini , Simon J. Mutch , J. Stuart B. Wyithe , Darren J. Croton

The current cosmological paradigm asserts that dark matter halos provide the gravitational scaffolding for galaxy formation through a combination of hierarchical structure formation and non-linear local (g)astrophysical processes. This…

Astrophysics of Galaxies · Physics 2024-04-18 Aldo Rodriguez-Puebla

A modified version of the extended Press-Schechter model for the growth of dark-matter haloes was introduced in two previous papers with the aim at explaining the mass-density relation shown by haloes in high-resolution cosmological…

Astrophysics · Physics 2009-11-07 A. Raig , G. Gonzalez-Casado , E. Salvador-Sole
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