Modeling CO Line Luminosity Using FIRE Simulations: I. Methodology and Validation of Molecular Gas and CO Abundance

arXiv:2610.12159 · astro-ph.GA, astro-ph.CO · Submitted 2026-10-08 · Read on arXiv

astro-ph.GA, astro-ph.CO

Submitted: 2026-10-08

Updated: 2026-10-08

Code: https://github.com/mikegrudic/meshoid

Terminology

• Metallicity — 77× in this paper · explained in 3 episodes
• Abundance — 51× in this paper · explained in 1 episode
• Core — 33× in this paper · explained in 2 episodes
• Velocity Dispersion — 8× in this paper · explained in 2 episodes
• Benchmark — 4× in this paper · explained in 2 episodes
• Line Intensity Mapping — 4× in this paper
• Accuracy — 3× in this paper · explained in 1 episode
• For Milky Way — 3× in this paper
• Clustering — 2× in this paper · explained in 2 episodes
• Cosmic Microwave Background — 2× in this paper
• Star Formation Rate (SFR) — 2× in this paper · explained in 5 episodes
• AGN — 1× in this paper · explained in 1 episode
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Aperture — 1× in this paper · explained in 1 episode
• Benchmarking — 1× in this paper · explained in 3 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Generalization — 1× in this paper · explained in 13 episodes
• Hubble Space Telescope — 1× in this paper
• Hubble Tension — 1× in this paper · explained in 9 episodes
• Large Language Model (LLM) — 1× in this paper · explained in 3 episodes
• Non-Gaussianity — 1× in this paper · explained in 2 episodes
• Observational Selection Effects — 1× in this paper · explained in 2 episodes
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Primordial non-Gaussianity — 1× in this paper · explained in 2 episodes
• Self-consistency — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• The $\mathtt{WebSky}$ $\mathrm{[CII]}$ Forecasts and the search for primordial intermittent non-Gaussianity
• Line-Intensity Mapping
• Dark energy constraints from the 21~cm intensity mapping surveys with SKA1
• Cosmology with the SPHEREX All-Sky Spectral Survey
• The 2013 Release of Cloudy
• The 2017 Release of Cloudy
• Astrophysics and Cosmology with Line-Intensity Mapping
• Line-Intensity Mapping: 2017 Status Report
• Second public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation

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