English
Related papers

Related papers: Analytical halo model of galactic conformity

200 papers

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

Empirical methods for connecting galaxies to their dark matter halos have become essential for interpreting measurements of the spatial statistics of galaxies. In this work, we present a novel approach for parameterizing the degree of…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-30 Benjamin V. Lehmann , Yao-Yuan Mao , Matthew R. Becker , Samuel W. Skillman , Risa H. Wechsler

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

Analytical models of galaxy-halo connection such as the Halo Occupation Distribution (HOD) model have been widely used over the past decades as a means to intensively test perturbative models on quasi-linear scales. However, these models…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-16 R. Paviot , A. Rocher , S. Codis , A. de Mattia , E. Jullo , S. de la Torre

The connection between galaxies and dark matter halos is often inferred from data using probabilistic models, such as the Halo Occupation Distribution (HOD). Conventional HOD formulations assume that only halo mass governs the galaxy-halo…

Cosmology and Nongalactic Astrophysics · Physics 2016-05-25 Andrew P. Hearin , Andrew R. Zentner , Frank C. van den Bosch , Duncan Campbell , Erik Tollerud

We investigate the luminosity and colour dependence of clustering of CMASS galaxies in the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Tenth Data Release. The halo occupation distribution framework is adopted to…

We model the luminosity-dependent projected and redshift-space two-point correlation functions (2PCFs) of the Sloan Digital Sky Survey (SDSS) DR7 Main galaxy sample, using the halo occupation distribution (HOD) model and the subhalo…

Comparisons between observational surveys and galaxy formation models find that the mass of dark matter haloes can largely explain galaxies' stellar mass. However, it remains uncertain whether additional environmental variables, generally…

We make use of the IllustrisTNG cosmological, hydrodynamical simulations to test fundamental assumptions of the mass-based Halo Occupation Distribution (HOD) approach to modelling the galaxy-halo connection. By comparing the clustering of…

Cosmology and Nongalactic Astrophysics · Physics 2020-08-11 Boryana Hadzhiyska , Sownak Bose , Daniel Eisenstein , Lars Hernquist , David N. Spergel

This paper studies the relative spatial distribution of red-sequence and blue-cloud galaxies, and their relation to the dark matter distribution in the COMBO-17 survey as function of scale down to z~1. We measure the 2nd-order auto- and…

We study the luminosity and color dependence of the galaxy 2-point correlation function in the Sloan Digital Sky Survey, starting from a sample of 200,000 galaxies over 2500 deg^2. We concentrate on the projected correlation function…

We construct mock galaxy catalogues to analyse clustering properties of a Lambda cold dark matter (LCDM) universe within a cosmological dark matter simulation of sufficient resolution to resolve structure down to the scale of dwarfs. We…

Astrophysics · Physics 2008-11-26 Darren S. Reed , Fabio Governato , Thomas Quinn , Joachim Stadel , George Lake

We present halo model predictions for the expected angular clustering and associated errors from the completed Sloan Digital Sky Survey (SDSS) photometric galaxy sample. These results are used to constrain halo model parameters under the…

Astrophysics · Physics 2009-11-07 Ryan Scranton

We present measurements of the redshift-space luminosity-weighted or `marked' correlation function in the SDSS. These are compared with a model in which the luminosity function and luminosity dependence of clustering are the same as that…

Astrophysics · Physics 2009-11-11 Ramin Skibba , Ravi K. Sheth , Andrew J. Connolly , Ryan Scranton

Galaxies exhibit different clustering and quenching properties in clusters, filaments, and the field, but it is still uncertain whether such differences are imprints of the tidal environment on galaxy formation, or if they reflect the…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-26 Shadab Alam , Ying Zu , John A. Peacock , Rachel Mandelbaum

We use subhalo abundance matching (SHAM) to model the stellar mass function (SMF) and clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) "CMASS" sample at $z\sim0.5$. We introduce a novel method which accounts for the stellar…

Understanding the impact of halo properties beyond halo mass on the clustering of galaxies (namely galaxy assembly bias) remains a challenge for contemporary models of galaxy clustering. We explore the use of machine learning to predict the…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-15 Xiaoju Xu , Saurabh Kumar , Idit Zehavi , Sergio Contreras

One of the key factors influencing galaxy clustering in the nonlinear regime is galaxy assembly bias, which describes the dependence of galaxy clustering on halo properties beyond halo mass. We study this effect by analyzing galaxy samples…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-04 Sergio García-Moreno , Jonás Chaves-Montero

We investigate the clustering of galaxy groups and clusters in the SDSS using the Berlind et al. (2006) group sample, which is designed to identify galaxy systems that each occupy a single dark matter halo. We estimate group masses from…

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