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Emission line galaxies (ELGs) are targeted by the new generation of spectroscopic surveys to make unprecedented measurements in cosmology from their distribution. Accurately interpreting this data requires understanding the imprints imposed…

We propose a new method of measuring halo occupation distribution (HOD) together with cosmic growth rate using multipole components of galaxy power spectrum P_l(k). The nonlinear redshift-space distortion due to the random motion of…

Cosmology and Nongalactic Astrophysics · Physics 2014-12-18 Chiaki Hikage

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 /…

Astrophysics of Galaxies · Physics 2018-08-15 Aklant Kumar Bhowmick , Duncan Campbell , Tiziana DiMatteo , Yu Feng

There are hints suggesting that properties of galaxy populations in dark matter haloes may depend on their large-scale environment. Recent works point out that very low-density environments influence halo occupation distribution (HOD),…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-17 Ignacio G. Alfaro , Andres N. Ruiz , Heliana E. Luparello , Facundo Rodriguez , Diego Garcia Lambas

We analyze the clustering of galaxies in the first public data release of the HSC Subaru Strategic Program. Despite the relatively small footprints of the observed fields, the data are an excellent proxy for the deep photometric datasets…

It is common practice for methods that use galaxy clustering to constrain the galaxy-halo relationship, such as the halo occupation distribution (HOD) and/or conditional luminosity function (CLF), to assume that halo mass alone suffices to…

Cosmology and Nongalactic Astrophysics · Physics 2015-02-11 Andrew R. Zentner , Andrew P. Hearin , Frank C. van den Bosch

We present the clustering properties and halo occupation distribution (HOD) modelling of very low redshift, hard X-ray-detected active galactic nuclei (AGN) using cross-correlation function measurements with Two-Micron All Sky Survey…

Astrophysics of Galaxies · Physics 2017-12-01 Mirko Krumpe , Takamitsu Miyaji , Alison L. Coil , Hector Aceves

We use cosmological hydrodynamic simulations (IllustrisTNG and SIMBA) to explore the redshift, luminosity, and black hole mass dependence of the quasar halo occupation distribution (HOD). In both simulations, we find that the quasar…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-14 Anirban Chowdhary , Suchetana Chatterjee

The galaxy distribution in dark matter-dominated halos is expected to approximately trace the details of the underlying dark matter substructure. In this paper we introduce halo `core-tracking' as a way to efficiently follow the small-scale…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-19 Danila Korytov , Esteban Rangel , Lindsey Bleem , Nicholas Frontiere , Salman Habib , Katrin Heitmann , Joseph Hollowed , Adrian Pope

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

In the present work we study the statistics of haloes, which in the halo model determines the distribution of galaxies. Haloes are known to be biased tracer of dark matter, and at large scales it is usually assumed there is no intrinsic…

Astrophysics · Physics 2015-05-13 Silvia Bonoli , Ue-Li Pen

The halo model provides a powerful framework for interpreting galaxy clustering by linking the spatial distribution of dark matter haloes to the underlying matter distribution. A key assumption within the halo bias approximation of the halo…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-02 Emy Mons , Vipul Prasad Maranchery , M. S. Suryan Sivadas , Charles Jose

The halo model offers a framework for investigating galaxy clustering, and for understanding the growth of galaxies and the distribution of galaxies of different types. Here, we use the halo model to study the small-scale clustering and…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-13 Alex Krolewski , Jensen Lawrence , Will J. Percival

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…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-21 Stuart Wyithe , Michael J. I. Brown , Martin A. Zwaan , Martin J. Meyer

This paper is the first in a series in which we perform an extensive comparison of various galaxy-based cluster mass estimation techniques that utilise the positions, velocities and colours of galaxies. Our primary aim is to test the…

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…

Cosmology and Nongalactic Astrophysics · Physics 2023-01-24 Aleksandra Kusiak , Boris Bolliet , Alex Krolewski , J. Colin Hill

We constrain the newly-introduced decorated Halo Occupation Distribution (HOD) model using SDSS DR7 measurements of projected galaxy clustering or r-band luminosity threshold samples. The decorated HOD is a model for the galaxy-halo…

Astrophysics of Galaxies · Physics 2022-07-22 Andrew R. Zentner , Andrew Hearin , Frank C. van den Bosch , Johannes U. Lange , Antonia Villarreal

The combination of galaxy-galaxy lensing (GGL) and galaxy clustering is a promising route to measuring the amplitude of matter clustering and testing modified gravity theories of cosmic acceleration. Halo occupation distribution (HOD)…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-30 Joseph E. McEwen , David H. Weinberg

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…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Colin DeGraf , Matthew Oborski , Tiziana Di Matteo , Suchetana Chatterjee , Daisuke Nagai , Zheng Zheng , Jonathan Richardson
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