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

TL;DR

This paper explores the seismic properties and pulsational instability regions of stars across different masses and evolutionary stages, emphasizing hybrid pulsations, Pdot measurements, and recent advances in stellar evolution understanding.

Contribution

It provides a comprehensive analysis of pulsational instability regions and highlights new research findings on hybrid pulsations and stellar evolution diagnostics.

Findings

Identification of instability regions across the Hertzsprung-Russell diagram

Emphasis on hybrid pulsational characteristics for asteroseismology

Use of Pdot measurements to track stellar evolutionary changes

Abstract

Parameter regions in which stars can become pulsationally unstable are found throughout the Hertzsprung-Russel 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 Pdot 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.