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We incorporate a model for black hole growth during galaxy mergers into the semi-analytical galaxy formation model based on Lambda-CDM proposed by Baugh et al. (2005). Our black hole model has one free parameter, which we set by matching…

Astrophysics · Physics 2009-11-11 Rowena K. Malbon , C. M. Baugh , C. S. Frenk , C. G. Lacey

We use a semi-analytic model of galaxy formation in hierarchical clustering theories to interpret recent data on galaxy formation and evolution, focussing primarily on the recently discovered population of Lyman-break galaxies at $z\simeq…

Astrophysics · Physics 2009-10-30 C. M. Baugh , S. Cole , C. S. Frenk , C. G. Lacey

Stellar Populations are the fossil record of Galactic evolution. Interpretation of this record in the Local Group allows one to determine reliably the dominant physics controlling the evolution of those galaxies which are typical of the…

Astrophysics · Physics 2007-05-23 Gerry Gilmore

We model the two-point correlation function of galaxies in a cold dark matter Universe by combining two powerful theoretical tools - dissipationless N-body simulations of dark matter clustering (specifically the GIF simulations carried out…

Astrophysics · Physics 2007-05-23 A. J. Benson , S. Cole , C. S. Frenk , C. M. Baugh , C. G. Lacey

We predict the Tully-Fisher (TF) and surface-brightness--magnitude relation for disk galaxies at z=3 and discuss the origin of these scaling relations and their scatter. We show that the variation of the TF relation with redshift can be a…

Astrophysics · Physics 2016-08-30 Ari Buchalter , Raul Jimenez , Marc Kamionkowski

We present high-redshift predictions of the star-formation-rate distribution function (SFR DF), UV luminosity function (UV LF), galactic stellar mass function (GSMF), and specific star-formation rates (sSFRs) of galaxies from the latest…

Astrophysics of Galaxies · Physics 2015-06-30 Scott Clay , Peter Thomas , Stephen Wilkins , Bruno Henriques

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

We present a new version of the GALFORM semi-analytical model of galaxy formation. This brings together several previous developments of GALFORM into a single unified model, including a different initial mass function (IMF) in quiescent…

In hierarchical models of galaxy formation, ellipticals form from the merging of disk galaxies drawn together by gravity as their surrounding dark halos coalesce. Using semi-analytic techniques, we are able to follow the merging, star…

Astrophysics · Physics 2007-05-23 Guinevere Kauffmann , Stephane Charlot

We investigate emission line galaxies across cosmic time by combining the modified L-Galaxies semi-analytical galaxy formation model with the JiuTian cosmological simulation. We improve the tidal disruption model of satellite galaxies in…

Astrophysics of Galaxies · Physics 2024-04-02 Wenxiang Pei , Qi Guo , Ming Li , Qiao Wang , Jiaxin Han , Jia Hu , Tong Su , Liang Gao , Jie Wang , Yu Luo , Chengliang Wei

High-redshift galaxy clusters allow us to examine galaxy formation in extreme environments. Here we compile data for 15 $z>1$ galaxy clusters to test the predictions from a state-of-the-art semi-analytical model of galaxy formation. The…

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

The distribution of galaxy morphological types is a key test for models of galaxy formation and evolution, providing strong constraints on the relative contribution of different physical processes responsible for the growth of the…

Star formation history shows a gradual decline since the last 8-9 Gyr (z=1). The bulk of present-day stellar mass and metal content was formed at redshifts lower than 2-3, which is consistent with a hierarchical scenario of galaxy…

Astrophysics · Physics 2007-05-23 F. Hammer , H. Flores

We present a comparison between the observed galaxy stellar mass function and the one predicted from the De Lucia & Blaizot (2007) semi-analytic model applied to the Millennium Simulation, for cluster satellites and galaxies in the field…

Astrophysics of Galaxies · Physics 2015-06-19 B. Vulcani , G. De Lucia , B. M. Poggianti , K. Bundy , S. More , R. Calvi

I summarize what is know about the evolution of galaxies in clusters from the observational point of view presenting results at high (z~1), intermediate (z~0.5) and low (z~0) redshifts. I comment on the comparison between observations and…

Astrophysics · Physics 2007-05-23 B. M. Poggianti

An overview over the current status of modeling galaxies by means of numerical simulations is given. After a short description of how galaxies form in hierarchically clustering scenarios, success and failures of current simulations are…

Astrophysics · Physics 2007-05-23 Matthias Steinmetz

We analyze high resolution, N-body hydrodynamical simulations of fiducial galaxy clusters to probe tidal stripping of the dark matter subhalos. These simulations include a prescription for star formation allowing us to track the fate of the…

We combine the GALFORM semi-analytical model of galaxy formation, which predicts the star formation and merger histories of galaxies, the GRASIL spectro-photometric code, which calculates the spectral energy distributions (SEDs) of galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 C. Almeida , C. M. Baugh , C. G. Lacey

We use semi-analytic models of galaxy formation combined with high resolution N-body simulations to make predictions for galaxy-dark matter correlations and apply them to galaxy-galaxy lensing. We analyze cross-correlation spectra between…

Astrophysics · Physics 2009-10-31 Jacek Guzik , Uros Seljak
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