Forward Modeling of Large-scale Structure: An Open-source Approach with Halotools

Hearin, Andrew P.; Campbell, Duncan; Tollerud, Erik; Behroozi, Peter; Diemer, Benedikt; Goldbaum, Nathan J.; Jennings, Elise; Leauthaud, Alexie; Mao, Yao -Yuan; More, Surhud; Parejko, John; Sinha, Manodeep; Sipocz, Brigitta; Zentner, Andrew

doi:10.3847/1538-3881/aa859f

Title: Forward Modeling of Large-scale Structure: An Open-source Approach with Halotools

Journal Article · Fri Oct 20 00:00:00 EDT 2017 · The Astronomical Journal (Online)

DOI: https://doi.org/10.3847/1538-3881/aa859f · OSTI ID:1406243

^[1]; Campbell, Duncan ^[2];

^[3]; Behroozi, Peter ^[4];

^[5];

^[6]; Jennings, Elise ^[7];

^[8];

^[9];

^[8]; Parejko, John ^[10];

^[11]; Sipocz, Brigitta ^[12]; Zentner, Andrew ^[13]

Yale Univ., New Haven, CT (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Yale Univ., New Haven, CT (United States)
Yale Univ., New Haven, CT (United States); Space Telescope Science Institute, Baltimore, MD (United States)
Univ. of California, Berkeley, CA (United States)
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
The Univ. of Tokyo, Chiba (Japan)
Stanford Univ., Stanford, CA (United States); Univ. of Pittsburgh, Pittsburgh, PA (United States)
Univ. of Washington, Seattle, WA (United States)
Vanderbilt Univ., Nashville, TN (United States); Swinburne Univ. of Technology, Hawthorn, VIC (Australia)
Univ. of Hertfordshire, Hatfield (United Kingdom); Univ. of Cambridge, Cambridge (United Kingdom)
Univ. of Pittsburgh, Pittsburgh, PA (United States)

Here, we present the first stable release of Halotools (v0.2), a community-driven Python package designed to build and test models of the galaxy-halo connection. Halotools provides a modular platform for creating mock universes of galaxies starting from a catalog of dark matter halos obtained from a cosmological simulation. The package supports many of the common forms used to describe galaxy-halo models: the halo occupation distribution (HOD), the conditional luminosity function (CLF), abundance matching, and alternatives to these models that include effects such as environmental quenching or variable galaxy assembly bias. Satellite galaxies can be modeled to live in subhalos, or to follow custom number density profiles within their halos, including spatial and/or velocity bias with respect to the dark matter profile. Here, the package has an optimized toolkit to make mock observations on a synthetic galaxy population, including galaxy clustering, galaxy-galaxy lensing, galaxy group identification, RSD multipoles, void statistics, pairwise velocities and others, allowing direct comparison to observations. Halotools is object-oriented, enabling complex models to be built from a set of simple, interchangeable components, including those of your own creation.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1406243

Report Number(s):: FERMILAB-PUB--16-723-A; arXiv:1606.04106; 1469199

Journal Information:: The Astronomical Journal (Online), Journal Name: The Astronomical Journal (Online) Journal Issue: 5 Vol. 154; ISSN 1538-3881

Publisher:: IOP Publishing - AAASCopyright Statement

Country of Publication:: United States

Language:: English

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cosmology: theory
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large-scale structure of universe

Title: Forward Modeling of Large-scale Structure: An Open-source Approach with Halotools

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