Date: March 9th, 2016 at 11:15a.m., room 34 (A-2)
Speaker: prof. Gerald Handler (CAMK, Warsaw)
Title: "Massive stars as seen with BRITE and TESS"
Abstract: Massive stars dominate the chemical evolution of stellar systems through mass loss and supernova explosions. However, the knowledge about their interior structure is still far from satisfactory. Key uncertainties comprise stellar rotation, internal mixing, mass loss, opacities and binarity. These problems can be addressed using the methods of asteroseismology, the sounding of stellar interiors using stellar pulsations as seismic waves. A brief overview of this methodology will be given, followed by an introduction to the BRITE-Constellation mission that has exactly this science goal and contains the first Polish scientific satellites. First BRITE results will be shown, and the talk is concluded by alluding to the upcoming NASA TESS mission that is expected to revolutionize the understanding of hot-star variability and interiors.