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Watch a 59-minute lecture by Jorick Vink from the Armagh Observatory and Planetarium exploring very massive stars (VMS) and their role in the universe. Discover how stars with masses exceeding 100 times that of our Sun serve as dominant sources of ionizing radiation, potentially playing a crucial role in cosmic re-ionization. Learn about the key differences between very massive stars in our local Universe compared to those in the Early Universe, with a particular focus on metallicity (Z). Explore how metallicity impacts the stellar upper mass limit, massive star formation processes, wind mass loss mechanisms, stellar evolution patterns, and the ultimate masses of black holes that form from these cosmic giants.
