Tales of stellar & binary co-evolution, told by stellar oscillations

Stellar binarity and stellar oscillations are mostly seen and studied as two separate phenomena. Sometimes, one process is even complicating the analysis of the other beyond the liking of one or the other research community. However, the complete picture painted by the physical constraints provided by the combination of both processes represents a unique opportunity to study the intricacies of the structure and evolution of stars and tidal interaction in detail. Asteroseismology of solar-like oscillators has proven to be a treasure trove, allowing unique insights into the evolution of stars like the Sun – from the main sequence into the advanced giant phases. Due to their extreme sensitivity to the stellar structure, the solar-like oscillations are a unique window to study the stellar evolution and the tidal interaction of the binary components. The continuous flow of data from space telescopes such as NASA Kepler, TESS, or ESA’s astrometric satellite Gaia has allowed the growth of a large sample of solar-like oscillators in binary stars that covers all phases of the solar evolution, where oscillations are known. In this talk, we reflect on the combined analysis of solar-like oscillators in binary systems, how it has shed light on the combined evolution of stellar and orbital structure. We will also discuss what oscillations teach us about tidal interaction and stellar activity. We will also reflect on how binaries are used to recalibrate seismology and test stellar evolutionary models. Hereby the lack of solar-like oscillators in eclipsing binary systems is imposing an observational bias on the calibration, and how the latest data from Gaia will help to overcome it.