Aeos: Transport of Metals from Minihalos following Population III Stellar Feedback
Jennifer Mead, Kaley Brauer, Greg L. Bryan, Mordecai-Mark Mac Low, Alexander P. Ji, John H. Wise, Andrew Emerick, Eric P. Andersson, Anna Frebel, Benoit C\^ot\'e

TL;DR
This study uses cosmological simulations to show how the first stars' supernovae expelled metals beyond their host halos, delaying enrichment and star formation, and explores the origins of various elements during early cosmic times.
Contribution
Introduces the Aeos simulation to model metal transport from Population III stars, revealing how feedback influences early chemical enrichment and star formation.
Findings
Supernova energy expels metals beyond halo virial radii.
Minihalos retain metals only after reaching >10^7 M_sun.
Enrichment dominated by core-collapse supernovae, with AGB winds contributing to s-process elements.
Abstract
We investigate how stellar feedback from the first stars (Population III) distributes metals through the interstellar and intergalactic medium using the star-by-star cosmological hydrodynamics simulation, Aeos. We find that energy injected from the supernovae of the first stars is enough to expel a majority of gas and injected metals beyond the virial radius of halos with mass M, regardless of the number of supernovae. This prevents self-enrichment and results in a non-monotonic increase in metallicity at early times. Most minihalos () do not retain significant fractions of the yields produced within their virial radii until they have grown to halo masses of . The loss of metals to regions well beyond the virial radius delays the onset of enriched star formation and extends the period that…
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Taxonomy
TopicsSolar and Space Plasma Dynamics
