Testing galaxy formation simulations with damped Lyman-α abundance and metallicity evolution
Loading...
Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Abstract
We examine the properties of damped Lyman-α absorbers (DLAs) emerging from a single set of cosmological initial conditions in two state-of-the-art cosmological hydrodynamic simulations: SIMBA and TECHNICOLOR DAWN. The former includes star formation and black hole feedback treatments that yield a good match with low-redshift galaxy properties, while the latter uses multifrequency radiative transfer to model an inhomogeneous ultraviolet background (UVB) self-consistently and is calibrated to match the Thomson scattering optical depth, UVB amplitude, and Ly α forest mean transmission at z > 5. Both simulations are in reasonable agreement with the measured stellar mass and star formation rate functions at z ≥ 3, and both reproduce the observed neutral hydrogen cosmological mass density, ΩHI(z).
Description
Keywords
Galaxies: evolution, Galaxies: formation, Intergalactic medium, Quasars: absorption lines, Cosmology: theory
Citation
Hassan, S. et al. (2020). Testing galaxy formation simulations with damped Lyman-α abundance and metallicity evolution. Monthly Notices of the Royal Astronomical Society, 492(2), 2835–2846