Metal-Poor Massive Binaries and Binary Products in the Local Group

Explore the formation and evolution of metal-poor massive binary star systems and their products within the Local Group of galaxies in this 40-minute conference talk. Examine how low-metallicity environments affect the development of massive stellar binaries and their eventual outcomes, including black holes, neutron stars, and other compact objects. Learn about observational evidence from gravitational wave detections, Gaia observations of dormant black holes, microlensing surveys, and time-domain astronomy that are revealing new populations of stellar-mass black holes. Discover how these multi-wavelength observations are transforming our understanding of the complete lifecycle of massive stars, from their complex evolutionary phases through core collapse and associated transients, to their afterlives as dormant or accreting black holes, and potential final merger events as gravitational wave sources. Gain insights into current theoretical models and observational strategies being developed to address fundamental questions about stellar black hole formation and evolution in metal-poor environments characteristic of the early universe and Local Group dwarf galaxies.