Speaker
Description
New rotating stellar models for the first generations of massive stars will be presented. Their results on nucleosynthesis will be compared with observed composition of very iron-poor stars and with the composition recently inferred by spectroscopy in high redshift galaxies by the JWST. We shall show that both fast-rotating Population III stars and/or non-rotating very massive stars up to 10,000 solar masses can reproduce the high N/O ratios observed in high redshift galaxies. We will also show the significant contribution of rotating very metal-poor stars on fluorine enrichment. Finally, we will discuss the impact of different implementations of the physics of rotation in stars, focusing on their impact on stellar nucleosynthesis.