Simulated star formation rate functions at z ∼ 4-7, and the role of feedback in high-z galaxies

摘要: We study the role of feedback from supernovae and black holes in evolution star formation rate function (SFRF) z~4-7 galaxies. use a new set cosmological hydrodynamic simulations, ANGUS (AustraliaN GADGET-3 early Universe Simulations), run with modified improved version parallel TreePM-smoothed particle hydrodynamics code called P-GADGET3(XXL), that includes self-consistent implementation stellar metal enrichment. In our simulations both Supernova (SN) driven galactic winds Active Galactic Nuclei (AGN) act simultaneously complex interplay. The SFRF is insensitive to prescription at z>5, meaning it cannot be used discriminate between models during reionisation. However, sensitive details lower redshift. By exploring different SN wind velocities regimes for AGN feedback, we find key factor reproducing observed SFRFs combination "strong" low mass Conversely, show choice initial inclusion cooling have less impact on SFRF. When variable are considered, non-aggressive scaling needed reproduce z>4. Otherwise, amount objects SFRs greatly suppressed same time not effective enough most massive systems.