Acoustic and buoyancy modes throughout stellar evolution: Seismic properties of stars at different stellar ages and masses

Abstract

Parameter regions in which stars can become pulsationally unstable are found throughout the Hertzsprung-Russell diagram. Stars of high, intermediate, low, and very low masses may cross various instability regions along their paths of evolutionary sequences. In describing them, I give special consideration to hybrid pulsational characteristics that are particularly valuable for asteroseismic investigations, to Ṗ measurements that allow us to directly follow the stellar evolutionary changes in some stars, and to new research results that stand out with respect to previous consensus. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.