October 2025 seminar - Dr. Abigail Frost скачать в хорошем качестве

October 2025 seminar - Dr. Abigail Frost

The multiplicity of B stars and its effects Massive stars have huge influence, with their felt from local to galactic scales. While they are fainter, less massive than the most massive O-type stars, B-type stars create their own set of unique phenomena and play important roles within the Universe. Above ∼25-40 solar masses, depending on the metallicity, most massive stars directly collapse into BHs. Therefore, most SNe come from B-type stars, alongside neutron stars (NS), pulsars, and the gravitational waves from long-inspiralling NS-NS mergers (e.g. GW170817; Abbott et al. 2017). Determining the B star multiplicity fraction is therefore a keystone for understanding a wide range of astrophysical phenomena. In this talk, I will discuss the multiplicity of B stars, highlight the results from a recent interferometric survey of B stars and discuss how this technique can also help us disentangle the history of interacting B star binary systems.