By analyzing spectroscopic data, astronomers have investigated the globular cluster Omega Centauri, aiming to find a population of stars with very low metallicity. The study resulted in the detection of the 11 most metal-poor stars in this cluster. The finding is reported in a paper published April 20 on arXiv.
Source:
https://phys.org/news/2020-04-metal-poor-stars-omega-centauri-cluster.html