Early Metal Enrichment by Pregalactic Outflows. II. Three-dimensional Simulations of Blow-Away
arXiv:astro-ph/0106107Publication · DOI
Approach
The calculations model haloes near one hundred million solar masses and examine how stellar distributions affect escape, radiative losses and gas motion.
Main result
For the tested star-formation efficiencies, substantial enriched gas escapes. Less than thirty per cent of supernova energy becomes ejecta kinetic energy, while inward shocks can collect central cold gas.
Scientific implications
Metal transport can occur alongside gas retention, allowing early low-mass galaxies to continue forming stars.
Scope and limitations
The efficiency is conditional on the adopted halo and stellar configurations; a simple total-energy comparison misses these spatial and cooling effects.