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Related papers: Semi-Analytic Galaxy Evolution (SAGE): Model Calib…

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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 (Croton et al., 2006; De Lucia & Blaizot, 2007). In…

Astrophysics · Physics 2008-09-04 F. Marulli , S. Bonoli , E. Branchini , L. Moscardini , V. Springel

We quantify the correlations between gas-phase and stellar metallicities and global properties of galaxies, such as stellar mass, halo mass, age and gas fraction, in the Evolution and Assembly of GaLaxies and their Environments (EAGLE)…

Astrophysics of Galaxies · Physics 2017-11-08 María Emilia De Rossi , Richard G. Bower , Andreea S. Font , Joop Schaye , Tom Theuns

In this work we develop a new method to turn a state-of-the-art hydrodynamical cosmological simulation of galaxy formation (HYD) into a simple semi-analytic model (SAM). This is achieved by summarizing the efficiencies of accretion,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Eyal Neistein , Sadegh Khochfar , Claudio Dalla Vecchia , Joop Schaye

We directly compare predictions of dwarf galaxy properties in a semi-analytic model (SAM) with those extracted from a high-resolution hydrodynamic simulation. We focus on galaxies with halo masses of 1e9<Mvir/Msol<1e11 at high redshift…

Astrophysics of Galaxies · Physics 2019-05-29 Yuxiang Qin , Alan R. Duffy , Simon J. Mutch , Gregory B. Poole , Andrei Mesinger , J. Stuart B. Wyithe

We present a method that calibrates a semi-analytic model to the Renaissance Simulations, a suite of cosmological hydrodynamical simulations with high-redshift galaxy formation. This approach combines the strengths of semi-analytic…

Astrophysics of Galaxies · Physics 2024-03-12 Ryan Hazlett , Mihir Kulkarni , Eli Visbal , John H. Wise

We study the dust evolution in galaxies by implementing a detailed dust prescription in the SAGE semi-analytical model for galaxy formation. The new model, called Dusty SAGE, follows the condensation of dust in the ejecta of type II…

Astrophysics of Galaxies · Physics 2020-02-18 Dian P. Triani , Manodeep Sinha , Darren J. Croton , Camilla Pacifici , Eli Dwek

We present a simple semi-numerical model designed to explore black hole growth and galaxy evolution. This method builds on a previous model for black hole accretion that uses a semi-numerical galaxy formation model and universal Eddington…

Astrophysics of Galaxies · Physics 2019-09-04 Mackenzie L. Jones , R. C. Hickox , S. J. Mutch , D. J. Croton , A. F. Ptak , M. A. DiPompeo

Investigating the assembly history of the most massive and passive galaxies will enhance our understanding of why galaxies exhibit such a remarkable diversity in structure and morphology. In this paper, we simultaneously investigate the…

Astrophysics of Galaxies · Physics 2025-01-22 D. Stoppacher , A. D. Montero-Dorta , M. C. Artale , A. Knebe , N. Padilla , A. J. Benson , C. Behrens

A halo merger tree forms the essential backbone of a semi-analytic model for galaxy formation and evolution. Recent studies have pointed out that extracting merger trees from numerical simulations of structure formation is non-trivial;…

Galaxies are self-gravitating structures composed by several components encompassing spherical, axial and triaxial symmetry. Although real systems feature heterogeneous components whose properties are intimately connected, semi-analytical…

Astrophysics of Galaxies · Physics 2021-02-03 Matteo Bonetti , Elisa Bortolas , Alessandro Lupi , Massimo Dotti

We predict the 21-cm global signal and power spectra during the Epoch of Reionisation using the MERAXES semi-analytic galaxy formation and reionisation model, updated to include X-ray heating and thermal evolution of the intergalactic…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-21 Sreedhar Balu , Bradley Greig , Yisheng Qiu , Chris Power , Yuxiang Qin , Simon Mutch , J. Stuart B. Wyithe

Long-term memory is becoming a central bottleneck for language agents. Exsting RAG and GraphRAG systems largely treat memory graphs as static retrieval middleware, which limits their ability to recover complete evidence chains from partial…

Artificial Intelligence · Computer Science 2026-05-13 Juntong Wang , Haoyue Zhao , guanghui Pan , Xiyuan Wang , Yanbo Wang , Qiyan Deng , Muhan Zhang

We present the Feedback Acting on Baryons in Large-scale Environments (FABLE) suite of cosmological hydrodynamical simulations of galaxies, groups and clusters. The simulations use the AREPO moving-mesh code with a set of physical models…

Astrophysics of Galaxies · Physics 2018-07-13 Nicholas A. Henden , Ewald Puchwein , Sijing Shen , Debora Sijacki

[ABRIDGED] Galaxy evolution is shaped by internal and external mechanisms that regulate the baryon cycle and star formation activity. We present a theoretical framework based on the GAlaxy Evolution and Assembly (GAEA) semi-analytic model.…

One of the prominent science goal of the ELTs will be to study the physics and mass assembly of galaxies at very high redshifts. Here, we present the galaxy evolution science case for EAGLE, which is a NIR multi-integral field spectrograph…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 M. Puech , M. Lehnert , Y. Yang , J. -G. Cuby , S. Morris , C. Evans , B. Neichel , T. Fusco , G. Rousset , H. Flores

We build upon the state-of-the-art semi-analytic model \texttt{FEGA24} (Formation and Evolution of GAlaxies, \citealt{contini2024d}), which integrates the latest prescriptions relevant to galaxy formation and evolution, alongside a…

Astrophysics of Galaxies · Physics 2025-05-21 Emanuele Contini , Sukyoung K. Yi , Jinsu Rhee , Seyoung Jeon

We propose a general framework to scrutinize the performance of semi-analytic codes of galaxy formation. The approach is based on the analysis of the outputs from the model after a series of perturbations in the input parameters controlling…

Astrophysics · Physics 2008-01-15 Jaime E. Forero-Romero

What main mechanisms set the star formation rate (SFR) of galaxies? This PhD thesis is a quest into the influences of gas and active galactic nuclei (AGNs) on the SFR, with particular focus on massive galaxies at z~2. First, a new code if…

Astrophysics of Galaxies · Physics 2017-01-11 Karen P. Olsen

We present a quantitative analysis of the properties of galaxies and structures evolving in universes dominated by different modified gravitational models, including two variants of the f(R)-gravity (F) and two of the Dvali-Gabdadze-Poratti…

Cosmological simulations are a powerful tool to advance our understanding of galaxy formation and many simulations model key properties of real galaxies. A question that naturally arises for such simulations in light of high-quality…

Astrophysics of Galaxies · Physics 2025-09-10 Lingyi Zhou , Stefan T. Radev , William H. Oliver , Aura Obreja , Zehao Jin , Tobias Buck