The Impact of Molecular Hydrogen Cooling on the Galaxy Formation Threshold

We study the impact of molecular (H _2 ) and atomic (H i ) hydrogen cooling on the galaxy formation threshold. We calculate the fraction of dark matter (DM) halos that exceeds a critical mass required for star formation, M _crit ( z ), as a function of their peak mass. By convolving analytic halo ma...

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Bibliographic Details
Main Author: Ethan O. Nadler
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal Letters
Subjects:
Online Access:https://doi.org/10.3847/2041-8213/adbc6e
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