GN-z11 is an unusually luminous high-redshift galaxy that was recently observed to have strong nitrogen lines while at the same time Setting Powder lacking traditional signatures of active galactic nucleus activity.These observations have been interpreted as a supersolar nitrogen abundance, which is challenging to explain with standard stellar evolution and supernova enrichment.We present simulations of four models of metal-enriched supermassive stars after the zero age main sequence, which produce supersolar nitrogen consistent with the observations of GN-z11.
We then show that the most-massive model ends its life in a violent explosion that Health Monitors results in even greater nitrogen pollution.