Stellar winds and metal enrichment from fast-rotating Population III stars

Stellar winds from fast-rotating Population III (Pop III) stars have long been suspected to make important contributions early metal enrichment, as features in the nucleosynthesis of such `spinstars' are consistent with chemical abundance patterns some metal-poor local Universe. Particularly, stellar rich light elements can provide another pathway towards explaining carbon enhancement carbon-enhanced (CEMP) stars. In this work, we focus on feedback Pop combined supernovae (SNe), and derive resulting signatures enriched medium. We explore a large parameter space star formation, feedback, yields SNe semi-analytical model. The predicted pattern iron abundances second-generation agrees well observations CEMP-no ($[\rm Ba/Fe]<0$) at $[\rm Fe/H]\lesssim -3$ $A(\mathrm{C})\lesssim 7$, under optimistic assumption significant mass loss by massive ($\gtrsim 25\ \rm M_{\odot}$) that collapse into BHs without SNe. scenario, carbon-rich but iron-free form systems dominated enrichment winds, gaining trace amounts accretion interstellar medium, become most iron-poor seen -4$, C/Fe]\gtrsim 2$). conclude observed be explained both our + ISM channel well-studied faint SN scenario. Wind Pop~III spinstars deserves more detailed modelling cosmic structure formation.