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This paper represents an effort to provide robust constraints on the galaxy-halo connection and simultaneously test the Planck LCDM cosmology using a fully numerical model of small-scale galaxy clustering. We explore two extensions to the…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-24 Gillian D. Beltz-Mohrmann , Adam O. Szewciw , Andreas A. Berlind , Manodeep Sinha

We present a Halo Occupation Distribution (HOD) analysis of the luminosity- and colour-dependent galaxy clustering in the Sloan Digital Sky Survey. A novelty of our technique is that it uses a combination of clustering measurements in…

Cosmology and Nongalactic Astrophysics · Physics 2019-07-10 Niladri Paul , Isha Pahwa , Aseem Paranjape

We investigate the clustering and halo occupation distribution (HOD) of DESI Y1 emission-line (ELGs) and luminous red (LRGs) galaxies at $0.8<z<1.1$, including their cross-correlation (ELG$\times$LRG), using the AbacusSummit suite and a new…

We measure the angular clustering of galaxies from the Sloan Digital Sky Survey Data Release 7 in order to probe the spatial distribution of satellite galaxies within their dark matter halos. Specifically, we measure the angular correlation…

Astrophysics of Galaxies · Physics 2015-06-29 Jennifer A. Piscionere , Andreas A. Berlind , Cameron K. McBride , Roman Scoccimarro

We cross-correlate a low-contamination subset of the VST ATLAS g < 22.5 quasar catalogue with g < 21.5 galaxy clusters, r < 21 galaxies and r < 19.5 Luminous Red Galaxies (LRGs) to probe their halo mass profiles via quasar magnification…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-01 Alice M. Eltvedt , T. Shanks , 1 N. Metcalfe , B. Ansarinejad , L. F. Barrientos , D. N. A. Murph , D. M. Alexander

Establishing a robust connection model between emission-line galaxies (ELGs) and their host dark haloes is of paramount importance in anticipation of upcoming redshift surveys. We propose a novel halo occupation distribution (HOD) framework…

Astrophysics of Galaxies · Physics 2025-04-08 Shogo Ishikawa , Teppei Okumura , Masao Hayashi , Tsutomu T. Takeuchi

We study the angular correlation function of star-forming galaxies and properties of their host dark matter halos at z>1 using the Hyper-Suprime Cam (HSC) SSP survey. We use [OII] emitters identified using two narrow-band (NB) filters,…

Astrophysics of Galaxies · Physics 2021-10-22 Teppei Okumura , Masao Hayashi , I-Non Chiu , Yen-Ting Lin , Ken Osato , Bau-Ching Hsieh , Sheng-Chieh Lin

Semi-analytical models of galaxy formation based on hierarchical clustering now make a wide range of predictions for observable properties of galaxies at low and high redshift. This article concentrates on 2 aspects: (1) Self-consistent…

Astrophysics · Physics 2007-05-23 Cedric Lacey , Carlton Baugh , Shaun Cole , Carlos Frenk , Fabio Governato

We present results of simulations aimed at tracing the formation of nuclear star clusters (NCs) and black hole (BH) seeds, in a cosmological context. We focus on two mechanisms for the formation of BHs at high redshifts: as end-products of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 B. Devecchi , M. Volonteri , E. M. Rossi , M. Colpi , S. Portegies Zwart

Understanding the galaxy-halo connection is fundamental for contemporary models of galaxy clustering. The extent to which the haloes' assembly history and environment impact galaxy clustering (a.k.a. galaxy assembly bias; GAB), remains a…

Astrophysics of Galaxies · Physics 2021-04-06 Xiaoju Xu , Idit Zehavi , Sergio Contreras

Building accurate and flexible galaxy-halo connection models is crucial in modeling galaxy clustering on non-linear scales. Recent studies have found that halo concentration by itself cannot capture the full galaxy assembly bias effect and…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-03 Sihan Yuan , Boryana Hadzhiyska , Sownak Bose , Daniel J. Eisenstein , Hong Guo

Adopting the framework of the Halo Occupation Distribution (HOD), we investigate the ability of galaxy clustering measurements to simultaneously constrain cosmological parameters and galaxy bias. Starting with a fiducial cosmological model…

Astrophysics · Physics 2008-11-26 Zheng Zheng , David H. Weinberg

(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…

Using conditional luminosity functions (CLFs) which encode the luminosity distribution of galaxies as a function of halo mass, we construct a halo model of IRAS galaxies selected at 60 micron. An abundance matching technique is used to link…

Cosmology and Nongalactic Astrophysics · Physics 2010-10-27 Lingyu Wang , Asantha Cooray , Seb Oliver

The relationship between galaxies and dark matter can be characterized by the halo mass of the central galaxy and the fraction of galaxies that are satellites. Here we present observational constraints from the SDSS on these quantities as a…

In this work, we combine size and stellar mass measurements from the Sloan Digital Sky Server (SDSS) with the group finder algorithm of Rodriguez \& Merch\'an in order to determine the stellar and halo mass -- size relations of central and…

Astrophysics of Galaxies · Physics 2021-07-07 Facundo Rodriguez , Antonio D. Montero-Dorta , Raul E. Angulo , M. Celeste Artale , Manuel Merchán

Halo model interpretations of the luminosity dependence of galaxy clustering assume that there is a central galaxy in every sufficiently massive halo, and that this central galaxy is very different from all the others in the halo. The halo…

Astrophysics · Physics 2009-02-02 Ramin A. Skibba , Ravi K. Sheth , Matthew C. Martino

We use a very large simulation of the concordance LCDM cosmogony to study the clustering of dark matter haloes. For haloes less massive than about 1e13Msun/h, the amplitude of the two-point correlation function on large scales depends…

Astrophysics · Physics 2010-04-06 Liang Gao , Volker Springel , Simon D. M. White

We present a detailed investigation into which properties of CDM halos make them effective strong gravitational lenses. Strong lensing cross sections of 878 clusters from an N-body simulation are measured by ray tracing through 13,594…

Astrophysics · Physics 2008-11-26 Joseph F. Hennawi , Neal Dalal , Paul Bode , Jeremiah P. Ostriker

Using K-band imaging for 15 of the Canadian Network for Observational Cosmology (CNOC1) clusters we examine the near-infrared properties of moderate-redshift (0.19 < z < 0.55) galaxy clusters. We find that the number of K-band selected…

Astrophysics · Physics 2009-05-11 Adam Muzzin , H. K. C. Yee , Patrick B. Hall , H. Lin
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