SIMULATING REALISTIC LYMAN-𝛼 EMITTERS INCLUDING THE EFFECT OF RADIATIVE TRANSFER

Author

Hasti Khoraminezhad, Missouri University of Science and Technology
Shun Saito, Missouri University of Science and TechnologyFollow
Max Gronke
Chris Byrohl

DOI

10.48550/arXiv.2507.16707

Abstract

We present an empirical yet physically motivated simulation of realistic Lyman-𝛼 emitters (LAEs) at 𝑧 ∼ 2 − 3, crucial for ongoing and forthcoming cosmological LAE surveys. We combine an empirical UniverseMachine galaxy-halo model with a simple spherical expanding shell model for the Lyman-𝛼 radiative transfer, calibrating only three free parameters to simultaneously reproduce the observed Lyman-𝛼 luminosity function and the angular clustering. Our LAE model is further supported by its consistency with other observables such as the Lyman-𝛼 equivalent width distribution, the Lyman-𝛼 escape fraction as a function of stellar mass and dust reddening, and the systemic velocity offsets. Our LAE model provides predictions for the halo occupation distributions for LAEs and relationship between Ly𝛼 luminosity and halo mass, including the distribution of satellite LAEs. Our work provides a crucial first step towards creating a high-fidelity LAE synthetic catalog for the LAE cosmology surveys. Our LAE catalog and spectra are publicly available at https://scholarsmine.mst.edu/research_data/14.

Start Date

November 2025

Recommended Citation

Khoraminezhad, Hasti; Saito, Shun; Gronke, Max; and Byrohl, Chris, "SIMULATING REALISTIC LYMAN-𝛼 EMITTERS INCLUDING THE EFFECT OF RADIATIVE TRANSFER" (2025). Research Data. 14.
https://scholarsmine.mst.edu/research_data/14

The definitive version is available at https://doi.org/10.48550/arXiv.2507.16707

Department(s)

Physics

Comments

Please see the first attached supplemental file for an example of viewing the attached data set.

Subject Headings

Large-scale structure— Lyman-Alpha Emitters — Lyman-Alpha Radiative Transfer

Document Type

Article - Journal

Document Version

Final Version

File Format

text

Language(s)

English

Rights

© 2025 The Authors, All rights reserved

Creative Commons Licensing

This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License.

Publication Date

25 November 2025