English
Related papers

Related papers: Revealing the properties of void galaxies and thei…

200 papers

The EAGLE cosmological simulations reproduce the observed galaxy stellar mass function and many galaxy properties. In this work, we study the dust-related properties of present-day EAGLE galaxies through mock observations in the…

Astrophysics of Galaxies · Physics 2016-08-17 Peter Camps , James W. Trayford , Maarten Baes , Tom Theuns , Matthieu Schaller , Joop Schaye

We use the hydrodynamic, cosmological EAGLE simulations to investigate how hot gas in haloes condenses to form and grow galaxies. We select haloes from the simulations that are actively cooling and study the temperature, distribution, and…

We study statistical properties of voids in the distribution of mass, dark-matter haloes and galaxies (B_J<-16) in a LCDM numerical simulation populated with galaxies using a semi-analytic galaxy formation model(GALFORM, Cole et al. 2000).…

Astrophysics · Physics 2009-11-13 N. D. Padilla , L. Ceccarelli , D. G. Lambas

We perform cosmological simulations of the intergalactic medium (IGM) at redshift z ~ 3 using the numerical gravity-hydrodynamics codes GADGET-3 and Enzo for the purpose of modelling the gaseous environments of galaxies. We identify haloes…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-23 Avery Meiksin , James S. Bolton , Eric R. Tittley

Many $z=1.5$ galaxies with a stellar mass ($M_{\star}$) $\geq 10^{10}\,\mathrm{M}_\odot$ are already quenched in both galaxy clusters ($>50$ per cent) and the field ($>20$ per cent), with clusters having a higher quenched fraction at all…

Astrophysics of Galaxies · Physics 2024-02-07 Syeda Lammim Ahad , Adam Muzzin , Yannick M. Bahé , Henk Hoekstra

We study how the gas in a sample of galaxies (M* > 10e9 Msun) in clusters, obtained in a cosmological simulation, is affected by the interaction with the intra-cluster medium (ICM). The dynamical state of each elemental parcel of gas is…

Astrophysics of Galaxies · Physics 2017-05-31 Vicent Quilis , Susana Planelles , Elena Ricciardelli

We use the Cosmic Assembly Deep Near-infrared Extragalactic Legacy Survey (CANDELS) data to study the relationship between quenching and the stellar mass surface density within the central radius of 1 kpc ($\Sigma_1$) of low-mass galaxies…

We study the statistics of dwarf galaxy populations as a function of environment in the cold dark matter (CDM) and warm dark matter (WDM) cosmogonies, using hydrodynamical simulations starting from initial conditions with matched phases but…

Astrophysics of Galaxies · Physics 2023-12-04 Tamar Meshveliani , Mark R. Lovell , Robert A. Crain , Joel Pfeffer

The circumgalactic medium (CGM) is closely linked to galaxy formation and evolution, but difficult to characterize observationally and typically poorly resolved in cosmological simulations. We use spherically-symmetric, idealized,…

Astrophysics of Galaxies · Physics 2020-02-12 Cassandra Lochhaas , Greg L. Bryan , Yuan Li , Miao Li , Drummond Fielding

We use simulations of the formation and evolution of the galaxy population in the Local Universe to address the issue of whether the standard theoretical model succeeds in producing empty regions as large and as dark as the observed nearby…

Astrophysics · Physics 2009-11-07 H. Mathis , S. D. M. White

As we demonstrated in Paper I, the quenched fractions of central and satellite galaxies as function of halo mass are extremely similar, as long as one controls for stellar mass. The same holds for the quenched fractions as a function of…

Astrophysics of Galaxies · Physics 2018-09-05 Enci Wang , Huiyuan Wang , Houjun Mo , Frank C. van den Bosch , S. H. Lim , Lixin Wang , Xiaohu Yang , Sihan Chen

We perform an extensive analysis of nonlinear and stochastic biasing of galaxies and dark halos in spatially flat low-density CDM universe using cosmological hydrodynamic simulations. We compare their biasing properties with the predictions…

Astrophysics · Physics 2009-10-16 Kohji Yoshikawa , Atsushi Taruya , Y. P. Jing , Yasushi Suto

Low-mass dwarf galaxies are expected to reside within dark matter haloes that have a pristine, `cuspy' density profile within their stellar half-light radii. This is because they form too few stars to significantly drive dark matter heating…

High-resolution LCDM cosmological N-body simulations are used to study the properties of galaxy-size dark halos in different environments (cluster, void, and "field"). Halos in clusters and their surroundings have a median spin parameter…

Astrophysics · Physics 2009-11-13 V. Avila-Reese , P. Colin , S. Gottloeber , C. Firmani , C. Maulbetsch

We introduce the "Engineering Dwarfs at Galaxy formation's Edge" (EDGE) project to study the cosmological formation and evolution of the smallest galaxies in the Universe. In this first paper, we explore the effects of resolution and…

We present the primary results from the Dragonfly Edge-on Galaxies Survey (DEGS), an exploration of the stellar halos of twelve nearby ($d < 25$ Mpc) edge-on disc galaxies with the Dragonfly Telephoto Array. The edge-on orientation of these…

The stellar halos of dwarf galaxies are becoming an object of interest in the extragalactic community due to their detection in some recent observations. Additionally, new cosmological simulations of very high resolution were performed,…

Recent studies of galaxies in the local Universe, including those in the Local Group, find that the efficiency of environmental (or satellite) quenching increases dramatically at satellite stellar masses below ~ $10^8\ {\rm M}_{\odot}$.…

We assess the morphology-density relation, H-alpha linewidth-density relation, and the effects of nearby companions for 300 galaxies selected from low-density environments of the Center for Astrophysics Redshift Survey. Both the…

Astrophysics · Physics 2009-10-31 N. A. Grogin , M. J. Geller

Void galaxies, residing within the deepest underdensities of the Cosmic Web, present an ideal population for the study of galaxy formation and evolution in an environment undisturbed by the complex processes modifying galaxies in clusters…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 K. Kreckel , E. Platen , M. A. Aragón-Calvo , J. H. van Gorkom , R. van de Weygaert , J. M. van der Hulst , K. Kovač , C. -W. Yip , P. J. E. Peebles