Presenter: Christian Ikechukwu Eze 

Affiliations: University of Nigeria, Nsukka, Nigeria and Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland 

Abstract: 

Massive stars occur mostly in binaries or multiples, with some hosting pulsating components. Just as the sound of a guitar is produced when its strings excite resonances in the guitar body at natural frequencies, the energy trapped within a star causes it to oscillate at its natural eigenfrequencies. These pulsations cause the outer layers of the star to vary in brightness as it expands and contracts. These rare systems, where massive stars both pulsate and orbit in eclipsing binaries, offer an unparalleled laboratory for probing the internal physics of high-mass stars. The combination of precise photometric and spectroscopic data from eclipses with asteroseismic signals gives new insights into stellar interiors, including core structure, rotational profiles, and mixing processes. Leveraging data from space-based missions such as Kepler and TESS, alongside ground-based campaigns, this seminar explores how the interplay between stellar pulsations and binary interactions enables precise constraints on fundamental stellar parameters and evolutionary pathways of massive stars. Join us as we decode the rhythmic pulses of the cosmos and uncover the hidden symphony within these extraordinary stellar duets.