Revisiting the winds of massive stars with proposed ultraviolet observatories”

Dr Alexandre David-Uraz,
(McGill University/Trottier Space Institute)

 

Abstract:

Massive stars are characterized by strong, radiation-driven winds that can significantly impact their evolution as well as their surroundings. Time-resolved observations diagnosing these winds, especially in the ultraviolet, paint the picture of dynamic and variable outflows, whose detailed study can help us better understand processes occurring at the surfaces and in the interiors of these stars. In this talk, I will present an overview of the different types of variability that are associated to massive star winds, as well as some recent results (both observational and theoretical) highlighting the need for more (and better!) observations. I will then discuss proposed ultraviolet observatories, and how they might address this need in the coming years and decades.

Timbits, coffee, tea will be served in STI A before the colloquium.