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相关论文: Void Statistics in Large Galaxy Redshift Surveys: …

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We present a detailed investigation of the changing relationship between galaxies and the dark matter haloes they inhabit from z~1.2 to the present day. We do this by comparing precise galaxy clustering measurements over 133 deg2 of the…

宇宙学与河外天体物理 · 物理学 2015-05-28 J. Coupon , M. Kilbinger , H. J. McCracken , O. Ilbert , S. Arnouts , Y. Mellier , U. Abbas , S. de la Torre , Y. Goranova , P. Hudelot , J. -P. Kneib , O. Le fèvre

We use high-resolution N-body simulations, combined with a halo occupation model of galaxy bias, to investigate voids in the galaxy distribution. Our goal is to address the 'void phenomenon' of Peebles (2001), which presents the observed…

天体物理学 · 物理学 2009-06-23 Jeremy L. Tinker , Charlie Conroy

Successful halo-model descriptions of the luminosity dependence of clustering distinguish between the central galaxy in a halo and all the others (satellites). To include colors, we provide a prescription for how the color-magnitude…

天体物理学 · 物理学 2009-06-23 Ramin A. Skibba , Ravi K. Sheth

Clustering of dark matter halos has been shown to depend on halo properties beyond mass such as halo concentration, a phenomenon referred to as halo assembly bias. Standard halo occupation models (HOD) in large scale structure studies…

宇宙学与河外天体物理 · 物理学 2019-04-05 Mohammadjavad Vakili , ChangHoon Hahn

We study the evolution of the Halo Occupation Distribution (HOD) and galaxy properties of nodes and filamentary structures obtained by \textsc{DisPerSE} from the \textsc{Illustris TNG300-1} hydrodynamical simulation, in the redshift range…

(Summary) Using the conditional luminosity function (CLF) -- the luminosity distribution of galaxies in a dark matter halo -- as the fundamental building block, we present an empirical model for the galaxy distribution. The model…

天体物理学 · 物理学 2009-11-13 Asantha Cooray

We present an analytic model for the galaxy two-point correlation function in redshift space. The model is constructed within the framework of the Halo Occupation Distribution (HOD), which quantifies galaxy bias on linear and non- linear…

天体物理学 · 物理学 2008-11-26 Jeremy L. Tinker

We model the luminosity-dependent projected two-point correlation function of DEEP2 (z~1) and SDSS (z~0) galaxies within the Halo Occupation Distribution (HOD) framework. At both epochs, there is a tight correlation between central galaxy…

天体物理学 · 物理学 2008-11-26 Zheng Zheng , Alison L. Coil , Idit Zehavi

To study the impact of sparsity and galaxy bias on void statistics, we use a single large-volume, high-resolution N-body simulation to compare voids in multiple levels of subsampled dark matter, halo populations, and mock galaxies from a…

宇宙学与河外天体物理 · 物理学 2015-06-17 P. M. Sutter , Guilhem Lavaux , Nico Hamaus , Benjamin D. Wandelt , David H. Weinberg , Michael S. Warren

A basic assumption in current halo occupation model is that the properties of a galaxy depend only on the mass of its dark matter halo. An important consequence of this is that the segregation of the galaxy population by large-scale…

天体物理学 · 物理学 2009-11-10 H. J. Mo , Xiaohu Yang , Frank C. van den Bosch , Y. P Jing

Halo Occupation Distribution (HOD) is a model giving the average number of galaxies in a dark matter halo, function of its mass and other intrinsic properties, like distance from halo center, luminosity and redshift of its constituting…

星系天体物理 · 物理学 2015-10-01 Ziad Sakr , Christophe Benoist

We use the latest observations from the 2dF Galaxy Redshift Survey to fit the conditional luminosity function (CLF) formulation of the halo-model for galaxies at z=0. This fit is then used to test the extent of evolution in the halo…

天体物理学 · 物理学 2008-11-26 Renbin Yan , Darren S. Madgwick , Martin White

We study the stellar halo color properties of six nearby massive highly inclined disk galaxies using Hubble Space Telescope Advanced Camera for Surveys and Wide Field Camera 3 observations in both F606W and F814W filters from the GHOSTS…

We propose a heuristic model that displays the main features of realistic theories for galaxy bias. We show that the low-order clustering statistics of the dark-matter distribution depend almost entirely on the locations and density…

天体物理学 · 物理学 2011-05-05 J. A. Peacock , R. E. Smith

We measure the environmental dependence, where environment is defined by the distance to the third nearest neighbor, of multiple galaxy properties inside the Environmental COntext (ECO) catalog. We focus primarily on void galaxies, which we…

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…

星系天体物理 · 物理学 2025-04-08 Shogo Ishikawa , Teppei Okumura , Masao Hayashi , Tsutomu T. Takeuchi

We examine how the spatial correlation function of galaxies from the CNOC2 Field Galaxy Redshift Survey depends on galaxy color, luminosity and redshift. The projected correlation function w_p is determined for volume-limited samples of…

天体物理学 · 物理学 2009-11-06 C. W. Shepherd , R. G. Carlberg , H. K. C. Yee , S. L. Morris , H. Lin , M. Sawicki , P. B. Hall , D. R. Patton

The galaxy-halo connection traces processes by which galaxies form and evolve. The halo occupation distribution (HOD) describes the relationship between galaxies and their host dark matter haloes. Measurements of the galaxy two-point…

宇宙学与河外天体物理 · 物理学 2026-03-20 Jacob Kennedy , Eric Gawiser , Kartheik G. Iyer , L. Y. Aaron Yung

Halo models and halo occupation distributions (HODs) are important tools to model the galaxy and matter distribution. We present and assess a new method for constraining the parameters of HODs using the gravitational lensing shear around…

星系天体物理 · 物理学 2022-09-14 Laila Linke , Patrick Simon , Peter Schneider , Daniel J. Farrow , Jens Rödiger , Angus H. Wright

We perform Halo Occupation Distribution (HOD) modeling to interpret small-scale and intermediate-scale clustering of 35,000 luminous early-type galaxies and their cross-correlation with a reference imaging sample of normal L* galaxies in…

天体物理学 · 物理学 2014-11-18 Zheng Zheng , Idit Zehavi , Daniel J. Eisenstein , David H. Weinberg , Y. P. Jing