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相关论文: Semi-Analytic Galaxy Evolution (SAGE): Model Calib…

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We present an extension of our semi-analytic model that follows the formation of Population III stars and their metal-enriched descendants, incorporating dark matter halo merger trees from cosmological $N$-body simulations and feedback from…

Several semi-analytic models (SAMs) try to explain how galaxies form, evolve and interact inside the dark matter large-scale structure. These SAMs can be tested by comparing their predictions for galaxy-galaxy-galaxy-lensing (G3L), which is…

We give a brief review of current theoretical work in galaxy formation. Recent results from N-body and N-body/hydrodynamic simulations, and from semianalytic modelling are discussed. We present updated versions of some figures from Cole et…

天体物理学 · 物理学 2011-04-15 C. S. Frenk , C. M. Baugh , S. Cole

We compare the predictions of three independently developed semi-analytic galaxy formation models that are being used to aid in the interpretation of results from the CANDELS survey. These models are each applied to the same set of halo…

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…

天体物理学 · 物理学 2009-11-07 John C. Helly , Shaun Cole , Carlos S. Frenk , Carlton M. Baugh , Andrew Benson , Cedric Lacey

We use numerical simulations to investigate, for the first time, the joint effect of feedback from supernovae (SNe) and active galactic nuclei (AGN) on the evolution of galaxy cluster X-ray scaling relations. Our simulations are drawn from…

宇宙学与河外天体物理 · 物理学 2015-05-18 C. J. Short , P. A. Thomas , O. E. Young , F. R. Pearce , A. Jenkins , O. Muanwong

We study dwarf galaxy formation at high redshift ($z\ge5$) using a suite of high- resolution, cosmological hydrodynamic simulations and a semi-analytic model (SAM). We focus on gas accretion, cooling and star formation in this work by…

宇宙学与河外天体物理 · 物理学 2018-08-07 Yuxiang Qin , Alan R. Duffy , Simon J. Mutch , Gregory B. Poole , Paul M. Geil , Andrei Mesinger , J. Stuart B. Wyithe

The new generation of upcoming deep photometric and spectroscopic surveys will allow us to measure the astrophysical properties of faint galaxies in massive clusters. This would demand to produce simulations of galaxy clusters with better…

星系天体物理 · 物理学 2024-10-29 Jonathan S. Gómez , Gustavo Yepes , A. Jiménez Muñoz , Weiguang Cui

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…

We construct the Numerical Galaxy Catalog ($\nu$GC), based on a semi-analytic model of galaxy formation combined with high-resolution N-body simulations in a $\Lambda$-dominated flat cold dark matter ($\Lambda$CDM) cosmological model. The…

天体物理学 · 物理学 2009-11-13 Masahiro Nagashima , Hideki Yahagi , Motohiro Enoki , Yuzuru Yoshii , Naoteru Gouda

We present a semi-analytic model of satellite galaxies, SatGen, which can generate large samples of satellite populations for a host halo of desired mass, redshift, and assembly history. The model combines dark-matter halo merger trees,…

Generating high-fidelity synthetic tabular data remains a critical challenge for enhancing data availability in privacy-sensitive and low-resource domains. Recent approaches leverage LLMs by representing table rows as sequences, yet suffer…

机器学习 · 计算机科学 2026-04-28 Shuo Yang , Zheyu Zhang , Bardh Prenkaj , Gjergji Kasneci

We use the semi-analytic model (SAM) of galaxy formation and evolution SAG coupled with the MULTIDARK simulation MDPL2 to study the evolution of the stellar mass-gas metallicity relation of galaxies (MZR). We test several implementations of…

星系天体物理 · 物理学 2018-09-05 Florencia Collacchioni , Sofía A. Cora , Claudia D. P. Lagos , Cristian A. Vega-Martínez

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…

天体物理学 · 物理学 2009-11-07 Christophe Balland , Julien E. G. Devriendt , Joe Silk

Advances in extragalactic astronomy have prompted the development of increasingly realistic models which aim to describe the formation and evolution of galaxies. We review the philosophy behind one such technique, called semi-analytic…

天体物理学 · 物理学 2009-11-07 C. M. Baugh , A. J. Benson , S. Cole , C. S. Frenk , C. Lacey

[abridged] We present results from the latest version of the GAEA theoretical model of galaxy formation coupled with merger trees extracted from the Planck Millennium Simulation (PMS). With respect to the Millennium Simulation, the PMS…

星系天体物理 · 物理学 2025-07-02 Fabio Fontanot , Gabriella De Lucia , Lizhi Xie , Michaela Hirschmann , Carlton Baugh , John C. Helly

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…

星系天体物理 · 物理学 2017-01-11 Chiara Tonini , Simon J. Mutch , J. Stuart B. Wyithe , Darren J. Croton

We model the cosmological co-evolution of galaxies and their central supermassive black holes (BHs) within a semi-analytical framework developed on the outputs of the Millennium Simulation. This model, described in detail in Croton et al.…

天体物理学 · 物理学 2009-11-13 Federico Marulli , Silvia Bonoli , Enzo Branchini , Lauro Moscardini , Volker Springel

Three-dimensional simulations of relativistic jets are a useful tool to understand the evolution of jets and radio galaxies in detail. However, computationally demanding as they are, their use is limited to a relatively small number of…

宇宙学与河外天体物理 · 物理学 2026-01-14 Pau Beltrán-Palau , Manel Perucho , José María Martí

We introduce the Virgo Consortium's EAGLE project, a suite of hydrodynamical simulations that follow the formation of galaxies and black holes in representative volumes. We discuss the limitations of such simulations in light of their…