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相关论文: Theoretical Models of the Halo Occupation Distribu…

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The halo occupation distribution (HOD) describes the bias between galaxies and dark matter by specifying (a) the probability P(N|M) that a halo of virial mass M contains N galaxies of a particular class and (b) the relative distributions of…

We investigate galaxy bias in the framework of the ``Halo Occupation Distribution'' (HOD), which defines the bias of a population of galaxies by the conditional probability P(N|M) that a dark matter halo of virial mass M contains N…

天体物理学 · 物理学 2009-11-07 Andreas A. Berlind , David H. Weinberg

We analyze the halo occupation distribution (HOD), the probability for a halo of mass M to host a number of subhalos N, and two-point correlation function of galaxy-size dark matter halos using high-resolution dissipationless simulations of…

We study the occupation statistics of galaxies in dark matter haloes using galaxy groups identified from the 2-degree Field Galaxy Redshift Survey with the halo-based group finder of Yang et al. The occupation distribution is considered…

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

We perform an analysis of the spatial clustering properties of HI selected galaxies from the HI Parkes All Sky Survey (HIPASS) using the formalism of the halo occupation distribution (HOD). The resulting parameter constraints show that the…

宇宙学与河外天体物理 · 物理学 2009-08-21 Stuart Wyithe , Michael J. I. Brown , Martin A. Zwaan , Martin J. Meyer

We combine the most precise small scale ($< 100\, \rm h^{-1}kpc$) quasar clustering constraintsto date with recent measurements at large scales ($> 1\, \rm h^{-1}Mpc$) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) to…

宇宙学与河外天体物理 · 物理学 2020-02-04 S. Eftekharzadeh , A. D. Myers , E. Kourkchi

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

We investigate the radial distribution of galaxies within their host dark matter halos by modeling their small-scale clustering, as measured in the Sloan Digital Sky Survey. Specifically, we model the Jiang et al. (2011) measurements of the…

宇宙学与河外天体物理 · 物理学 2015-05-30 Douglas F. Watson , Andreas A. Berlind , Cameron K. McBride , David W. Hogg , Tao Jiang

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

The next generation of galaxy surveys will provide more precise measurements of galaxy clustering than have previously been possible. The 21-cm radio signals that are emitted from neutral atomic hydrogen (HI) gas will be detected by…

宇宙学与河外天体物理 · 物理学 2022-10-12 Fei Qin , Cullan Howlett , Adam R. H. Stevens , David Parkinson

We construct halo occupation distribution (HOD) models of high redshift ($z \gtrsim 7.5$) galaxies with $M_{*}>10^8~M_{\odot}/h$ using the BlueTides hydrodynamic simulation suite, with a particular emphasis on modelling the small scale /…

星系天体物理 · 物理学 2018-08-15 Aklant Kumar Bhowmick , Duncan Campbell , Tiziana DiMatteo , Yu Feng

The halo occupation distribution (HOD) framework is an empirical method to describe the connection between dark matter halos and galaxies, which is constrained by small scale clustering data. Efficient fitting procedures are required to…

宇宙学与河外天体物理 · 物理学 2023-05-24 Antoine Rocher , Vanina Ruhlmann-Kleider , Etienne Burtin , Arnaud de Mattia

In this paper we study the stellar-mass dependence of galaxy clustering in the 6dF Galaxy Survey. The near-infrared selection of 6dFGS allows more reliable stellar mass estimates compared to optical bands used in other galaxy surveys. Using…

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 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 present a physically motivated semi-analytic model to understand the clustering of high redshift LBGs. We show that the model parameters constrained by the observed luminosity function, can be used to predict large scale (\theta > 80…

宇宙学与河外天体物理 · 物理学 2015-06-11 Charles Jose , Kandaswamy Subramanian , Raghunathan Srianand , Saumyadip Samui

We present the first detailed analysis of the connection between galaxies and their dark matter halos for the unWISE galaxy catalog -- a full-sky, infrared-selected sample built from WISE data, containing over 500 million galaxies. Using…

宇宙学与河外天体物理 · 物理学 2023-01-24 Aleksandra Kusiak , Boris Bolliet , Alex Krolewski , J. Colin Hill

We investigate the halo occupation distribution (HOD) of black holes within a hydrodynamic cosmological simulation that directly follows black hole growth. Similar to the HOD of galaxies/subhalos, we find that the black hole occupation…

宇宙学与河外天体物理 · 物理学 2015-05-27 Colin DeGraf , Matthew Oborski , Tiziana Di Matteo , Suchetana Chatterjee , Daisuke Nagai , Zheng Zheng , Jonathan Richardson

We use the halo occupation distribution (HOD) framework to characterise the predictions from two independent galaxy formation models for the galactic content of dark matter haloes and its evolution with redshift. Our galaxy samples…

星系天体物理 · 物理学 2016-12-16 S. Contreras , I. Zehavi , C. M. Baugh , N. Padilla , P. Norberg

Evidence shows properties of dark matter haloes may vary with large-scale environment. By studying the halo occupation distribution in cosmic voids it is possible to obtain useful information that can shed light on the subject. The history…

宇宙学与河外天体物理 · 物理学 2020-07-01 Ignacio. G. Alfaro , Facundo Rodriguez , Andrés N. Ruiz , Diego Garcia Lambas
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