Astronomy & Astrophysics Seminar: Space Asteroseismology: Diving Deep into Stars

Zoom: https://us02web.zoom.us/j/84211520648?pwd=dllEbUhBU1VRUDZPL2lWRnhjWEdzZz09

Abstract:

Continuous photometric monitoring by space telescopes offered us an efficient tool to detect numerous nonradial oscillations of stars. The observed properties of such oscillations allow us to derive how stars grow, age, rotate, and mix their gas.  In this talk we first provide a basic introduction into asteroseismology for the non-expert.  We discuss various types of nonradial oscillation modes and discuss their frequency ranges.  We then move on to applications of space asteroseismology, focusing on results from 4-year Kepler light curves and gradually diving deeper into the stellar interior.  We treat high-precision sizing, weighing, and ageing of stars throughout the Milky Way, derive the internal rotation of stars and offer a deep look into mixing inside stars with a convective core.  We end with a future outlook for this glorious research field of astrophysics thanks to the ongoing NASA TESS and future ESA PLATO space missions.

Seminar Organizer: Dr. Iair Arcavi