Seismic constraints on the internal structure of evolved stars: From high-luminosity RGB to AGB stars

The space-borne missions CoRoT and Kepler opened up a new opportunity for better understanding stellar evolution by probing interiors with unrivalled high-precision photometric data. has observed oscillation four years, which gave access to excellent frequency resolution that enables deciphering the spectrum of evolved red giant branch asymptotic stars. internal structure stars in upper parts branches is poorly constrained, makes distinction between giants difficult. We perform thorough seismic analysis address physical conditions inside these distinguish them. studied mode properties about 2.000 model described pressure-mode pattern giants, includes signature helium second-ionisation zone. extracted degree l = 3 investigated their dependence on mass, metallicity, evolutionary status. identify clear difference zone giants. also detect shortage energy 1 modes after core-He-burning phase. Furthermore, we note damping similar branch. highlight varies evolution. This provides us basis distinguishing from Here, our investigation oscillations allows constrain processes key events occur during advanced stages evolution, emphasis ascent along branch, including bump.