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Related papers: Very Massive Galaxies: A Challenge for Hierarchica…

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We use ~100 cosmological galaxy formation zoom-in simulations using the smoothed particle hydrodynamics code {\sc gasoline} to study the effect of baryonic processes on the mass profiles of cold dark matter haloes. The haloes in our study…

The fates of massive galaxies are tied to the evolution of their central supermassive black holes (BHs), due to the influence of AGN feedback. Correlations within simulated galaxy populations suggest that the masses of BHs are governed by…

Astrophysics of Galaxies · Physics 2023-11-08 Jonathan J. Davies , Andrew Pontzen , Robert A. Crain

We develop a model to establish the interconnection between galaxies and their dark matter halos. We use Principal Component Analysis (PCA) to reduce the dimensionality of both the mass assembly histories of halos/subhalos and the star…

Astrophysics of Galaxies · Physics 2021-09-01 Yangyao Chen , H. J. Mo , Cheng Li , Kai Wang , Huiyuan Wang , Xiaohu Yang , Youcai Zhang , Neal Katz

One of the generic predictions of modern cosmological models is that large galaxies should have experienced many mergers with smaller galaxies at some point in their past. Debris from such encounters will leave spatially distinct…

Astrophysics · Physics 2007-05-23 James E. Taylor

We construct a simple phenomenological model for the evolving galaxy population by incorporating pre-defined baryonic prescriptions into a dark matter hierarchical merger tree. Specifically the model is based on the simple gas-regulator…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Simon Birrer , Simon Lilly , Adam Amara , Aseem Paranjape , Alexandre Refregier

Galaxy formation, viewed as an inference problem from incomplete information, is inherently stochastic. Reducing the full simulation state to a coarse-grained set of variables integrates out unresolved degrees of freedom, motivating an…

Astrophysics of Galaxies · Physics 2026-05-29 Daneng Yang

I review the results of recent N--body/hydrodynamical simulations of the formation of galaxies in hierarchical universes, with special emphasis on the structure of dark matter halos, as well as on the mass and angular momentum of gaseous…

Astrophysics · Physics 2007-05-23 Julio F. Navarro

We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Andrew J. Benson

The latest observations of molecular gas and the atomic hydrogen content of local and high-redshift galaxies, coupled with how these correlate with star formation activity, have revolutionized our ideas about how to model star formation in…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-19 Claudia del P. Lagos , Cedric G. Lacey , Carlton M. Baugh

We use N-body simulations and observationally-normalized relations between dark matter halo mass, stellar mass, and cold gas mass to derive robust, arguably inevitable expectations about the baryonic content of major mergers out to redshift…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-14 Kyle R. Stewart , James S. Bullock , Risa H. Wechsler , Ariyeh H. Maller

The current models of early star and galaxy formation are based upon the hierarchical growth of dark matter halos, within which the baryons condense into stars after cooling down from a hot diffuse phase. The latter is replenished by infall…

Astrophysics · Physics 2009-10-31 A. Cavaliere , R. Giacconi , N. Menci

I review the current state of our understanding of the galaxy formation and evolution process from the modeler's perspective. With the advent of the cold dark matter model and the support of fast computers and advanced simulation…

Astrophysics · Physics 2007-05-23 Matthias Steinmetz

The evolving galaxy is considered as a system of baryonic fragments embedded into the static dark nonbaryonic (DH) and baryonic (BH) halo and subjected to gravitational and viscous interactions. Though the chemical evolution of each…

Astrophysics · Physics 2007-05-23 Peter Berczik , Sergei G. Kravchuk

We reanalyze the formation and evolution of galaxies in the hierarchical clustering scenario. Using a semi-analytic model (SAM) of galaxy formation described in this paper, which we hereafter call the Mitaka model, we extensively…

Astrophysics · Physics 2009-11-10 Masahiro Nagashima , Yuzuru Yoshii

We introduce and apply a new approach to probe the response of galactic stellar haloes to the interplay between cosmological merger histories and galaxy formation physics. We perform dark matter-only, zoomed simulations of two Milky…

Astrophysics of Galaxies · Physics 2022-01-21 Martin P. Rey , Tjitske K. Starkenburg

What galaxy lives in what halo? The answer to this simple question holds important information regarding galaxy formation and evolution. We describe a new statistical technique to link galaxies to their dark matter haloes, or light to mass,…

Astrophysics · Physics 2007-05-23 Frank C. van den Bosch , Xiaohu Yang , H. J. Mo

[Abridged] Over the past two decades observations and theoretical simulations have established a global frame-work of galaxy formation and evolution in the young Universe. Galaxies formed as baryonic gas cooled at the centres of collapsing…

A simple, 1-equation, galaxy formation model is applied to both the halo merger tree derived from a high-resolution dissipationless cosmological simulation and to 1/4 million Monte-Carlo halo merger trees. The galaxy formation model…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Gary A. Mamon , Dylan Tweed , Trinh X. Thuan , Andrea Cattaneo

We use TNG and EAGLE hydrodynamic simulations to investigate the central galaxy - dark matter halo relations that are needed for a halo-based empirical model of star formation in galaxies. Using a linear dimension reduction algorithm and a…

Astrophysics of Galaxies · Physics 2021-03-24 Yangyao Chen , H. J. Mo , Cheng Li , Kai Wang

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