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We report the results of a multi-waveband analysis of the masses and luminosities of $\sim$600 galaxy groups and clusters identified in the maxBCG catalogue. These data are intended to form the basis of future work on the formation of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-24 Robert N. Proctor , Claudia Mendes de Oliveira , Luiz Azanha , Renato Dupke , Roderik Overzier

The most massive and luminous galaxies in the Universe serve as powerful probes to study the formation of structure, the assembly of mass, and cosmology. However, their detailed formation and evolution is still barely understood. Here we…

Tracking the formation and evolution of dark matter haloes is a critical aspect of any analysis of cosmological $N$-body simulations. In particular, the mass assembly of a halo and its progenitors, encapsulated in the form of its merger…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-16 Sownak Bose , Daniel J. Eisenstein , Boryana Hadzhiyska , Lehman H. Garrison , Sihan Yuan

In this paper we demonstrate that the information encoded in \emph{one} single (sufficiently large) $N$-body simulation can be used to reproduce arbitrary numbers of halo catalogues, using approximated realisations of dark matter density…

Full ray-tracing maps of gravitational lensing, constructed from N-Body simulations, represent a fundamental tool to interpret present and future weak lensing data. However the limitation of computational resources and storage capabilities…

The correlation function of galaxy clusters has often been used as a test of cosmological models. A number of assumptions are implicit in the comparison of theoretical expectations to data. Here we use an ensemble of ten large N-body…

Astrophysics · Physics 2015-06-24 Vincent R. Eke , Shaun Cole , Carlos S. Frenk , Julio F. Navarro

General Relativistic effects on the clustering of matter in the universe provide a sensitive probe of cosmology and gravity theories that can be tested with the upcoming generation of galaxy surveys. Here, we present a suite of large volume…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-31 Y. Rasera , M-A. Breton , P-S. Corasaniti , J. Allingham , F. Roy , V. Reverdy , T. Pellegrin , S. Saga , A. Taruya , S. Agarwal , S. Anselmi

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…

Astrophysics · Physics 2009-11-13 Masahiro Nagashima , Hideki Yahagi , Motohiro Enoki , Yuzuru Yoshii , Naoteru Gouda

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 present the UNIT $N$-body cosmological simulations project, designed to provide precise predictions for nonlinear statistics of the galaxy distribution. We focus on characterizing statistics relevant to emission line and luminous red…

We propose that observations of super-massive galaxies contain cosmological constraining power similar to conventional cluster cosmology, and we provide promising indications that the associated systematic errors are comparably easier to…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-07 Enia Xhakaj , Alexie Leauthaud , Johannes Lange , Elisabeth Krause , Andrew Hearin , Song Huang , Risa H. Wechsler , Sven Heydenreich

The Dark Energy Survey (DES) will be unprecedented in its ability to probe exceptionally large cosmic volumes to relatively faint optical limits. Primarily designed for the study of comparatively low redshift (z<2) galaxies with the aim of…

The 4-metre Multi-Object Spectroscopic Telescope Cosmology Redshift Survey (4MOST CRS) will obtain 5.4 million spectroscopic redshifts over ~5700 deg^2 to map large-scale structure and enable measurements of baryon acoustic oscillations,…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-11 Behnood Bandi , Antoine Rocher , Aurélien Verdier , Jon Loveday , Zhuo Chen , Johan Richard , Jean-Paul Kneib , Tom Shanks , Michael J. I. Brown

The Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey (BGS) will be a survey of bright, low redshift galaxies, which is planned to cover an area of ~14,000 sq deg in 3 passes. Each pass will cover the survey area with ~2000…

We present the evolution of dark matter halos in six large cosmological N-body simulations, called the $\nu^2$GC (New Numerical Galaxy Catalog) simulations on the basis of the LCDM cosmology consistent with observational results obtained by…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-06 Tomoaki Ishiyama , Motohiro Enoki , Masakazu A. R. Kobayashi , Ryu Makiya , Masahiro Nagashima , Taira Oogi

The study of dark matter substructure through strong gravitational lensing has shown enormous promise in probing the properties of dark matter on sub-galactic scales. This approach has already been used to place strong constraints on a wide…

Astrophysics of Galaxies · Physics 2025-03-14 Charles Gannon , Anna Nierenberg , Andrew Benson , Ryan Keeley , Xiaolong Du , Daniel Gilman

In paper I of this series (Fosalba et al. 2013), we presented a new N-body lightcone simulation from the MICE collaboration, the MICE Grand Challenge (MICE-GC), containing about 70 billion dark-matter particles in a (3 Gpc)^3 comoving…

Cosmology and Nongalactic Astrophysics · Physics 2015-07-30 P. Fosalba , E. Gaztanaga , F. J. Castander , M. Crocce

We use giga-particle N-body simulations to study galaxy cluster populations in Hubble Volumes of LCDM (Omega_m=0.3, Omega_Lambda=0.7) and tCDM (Omega_m=1) world models. Mapping past light-cones of locations in the computational space, we…

(Abridged) We present a semi-analytic model for Cold Dark Matter halo substructure that can be used as a framework for studying galaxy formation and an ingredient in halo models of galaxy clustering. We perform a comprehensive comparison of…