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A significant fraction of galaxy clusters exhibits cluster wide radio halos. We give a simple prediction of the local and higher redshift radio halo luminosity function (RHLF) on the basis of (i) an observed and a theoretical X-ray cluster…

Astrophysics · Physics 2009-11-07 Torsten A. Ensslin , Huub Roettgering

We extend our previous physically-based halo occupation distribution models to include the dependence of clustering on the spectral energy distributions of galaxies. The high resolution Millennium Simulation is used to specify the positions…

Astrophysics · Physics 2008-11-26 Lan Wang , Cheng Li , Guinevere Kauffmann , Gabriella De Lucia

Lyman-Break Galaxy (LBG) samples observed during reionization ($z\gtrsim6$) with Hubble Space Telescope's Wide Field Camera 3 are reaching sizes sufficient to characterize their clustering properties. Using a combined catalog from the…

We present predictions for the clustering of Extremely Red Objects (EROs) in a \Lambda cold dark matter Universe, using a semi-analytical galaxy formation model in combination with a cosmological N-body simulation. EROs are red, massive…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 V. Gonzalez-Perez , C. M. Baugh , C. G. Lacey , J. -W. Kim

We use N-body simulations to test the predictions of the redshift distortion in the power spectrum given by the halo model in which the clustering of dark matter particles is considered as a result both of the clustering of dark halos in…

Astrophysics · Physics 2009-11-07 Xi. Kang , Y. P. Jing , H. J. Mo , G. Borner

We use the clustering results obtained by Madgwick et al. (2003) for a sample of 96,791 2dF galaxies with redshift 0.01 < z < 0.15 to study the distribution of late-type and early-type galaxies within dark matter haloes of different mass.…

Astrophysics · Physics 2017-03-29 Manuela Magliocchetti , Cristiano Porciani

We present measurements of the redshift-dependent clustering of a DESI-like luminous red galaxy (LRG) sample selected from the Legacy Survey imaging dataset, and use the halo occupation distribution (HOD) framework to fit the clustering…

The distribution of cold gas in dark matter haloes is driven by key processes in galaxy formation: gas cooling, galaxy mergers, star formation and reheating of gas by supernovae. We compare the predictions of four different galaxy formation…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Han-Seek Kim , C. M. Baugh , A. J. Benson , S. Cole , C. S. Frenk , C. G. Lacey , C. Power , M. Schneider

In this paper we present Monte-Carlo simulations of Lyman alpha absorption systems which originate in galactic haloes, galaxy discs and dark matter (DM) satellites around big central haloes. It is found that for strong Lyman alpha…

Astrophysics · Physics 2009-10-31 W. P. Lin , G. Boerner , H. J. Mo

Understanding the dark matter (DM) halo environment in which galaxies that host active galactic nuclei (AGN) reside is a window into the nature of supermassive black hole (SMBH) accretion. We apply halo occupation distribution (HOD)…

We use the IllustrisTNG (TNG) simulations to explore the galaxy-halo connection as inferred from state-of-the-art cosmological, magnetohydrodynamical simulations. With the high mass resolution and large volume achieved by combining the 100…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-25 Sownak Bose , Daniel J. Eisenstein , Lars Hernquist , Annalisa Pillepich , Dylan Nelson , Federico Marinacci , Volker Springel , Mark Vogelsberger

Analyzing the halo and galaxy catalogs from the Millennium simulations at redshifts $z=0,\ 0.5,\ 1$, we determine the alignment profiles of cluster galaxies by measuring the average alignments between the major axes of the pseudo inertia…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Hyunmi Song , Jounghun Lee

We use a sample of ~6000 galaxies detected by the Arecibo Legacy Fast ALFA (ALFALFA) 21cm survey, to measure the clustering properties of HI-selected galaxies. We find no convincing evidence for a dependence of clustering on the galactic…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Emmanouil Papastergis , Riccardo Giovanelli , Martha P. Haynes , Aldo Rodríguez-Puebla , Michael G. Jones

We present the first scientific results from the luminous red galaxy sample (LRG) of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). We measure the small and intermediate scale clustering from a sample of more than 61,000…

We present measurements of the dependence of the clustering amplitude of galaxies on their star formation rate (SFR) and stellar mass ($M_*$) at $0.7 < z < 1.5$ to assess the extent to which environment affects these properties. While these…

Astrophysics of Galaxies · Physics 2022-07-27 Callie Clontz , David Wake , Zheng Zheng

We study the kinematics of satellites around isolated galaxies selected from the Sloan Digital Sky Survey (SDSS) spectroscopic catalog. Using a model of the phase-space density previously measured for the halos of LCDM dark matter…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-07 Radoslaw Wojtak , Gary A. Mamon

We present a study on the clustering of a stellar mass selected sample of galaxies with stellar masses M*>10^10Msol at redshifts 0.4<z<2.0, taken from the Palomar Observatory Wide-field Infrared Survey. We examine the clustering properties…

Cosmology and Nongalactic Astrophysics · Physics 2016-11-25 Sebastien Foucaud , Christopher J. Conselice

To extract information from the clustering of galaxies on non-linear scales, we need to model the connection between galaxies and halos accurately and in a flexible manner. Standard halo occupation distribution (HOD) models make the…

Cosmology and Nongalactic Astrophysics · Physics 2022-09-22 Ana Maria Delgado , Digvijay Wadekar , Boryana Hadzhiyska , Sownak Bose , Lars Hernquist , Shirley Ho

We study the stellar mass content of massive haloes in the redshift range 0.86<z<1.34, by measuring: (1) The stellar mass in the central galaxy versus total dynamical halo mass. (2) The total stellar mass (including satellites) versus total…

Cosmology and Nongalactic Astrophysics · Physics 2014-01-06 Remco F. J. van der Burg , Adam Muzzin , Henk Hoekstra , Gillian Wilson , Chris Lidman , H. K. C. Yee

Understanding the physical connection between cluster galaxies and massive haloes is key to mitigating systematic uncertainties in next-generation cluster cosmology. We develop a novel method to infer the level of conformity between the…

Cosmology and Nongalactic Astrophysics · Physics 2022-01-25 Ying Zu , Yunjia Song , Zhiwei Shao , Xiaokai Chen , Yun Zheng , Hongyu Gao , Yu Yu , Huanyuan Shan , Yipeng Jing