# Astro2020 Science White Paper: gravity-wave asteroseismology of intermediate- and high-mass stars

## TL;DR

This paper discusses how gravity-wave asteroseismology, enabled by space-based photometry, reveals critical shortcomings in current stellar evolution models, especially regarding chemical and angular momentum transport in intermediate- and high-mass stars.

## Contribution

It highlights the potential of gravity-mode oscillations to improve understanding of stellar interior processes and addresses current model deficiencies in early nuclear burning phases.

## Key findings

- Current models show major shortcomings in early nuclear burning phases.
- Gravity-mode oscillations reveal details of chemical and angular momentum transport.
- Space missions provide high-precision data crucial for advancing stellar theory.

## Abstract

The evolution of a star is driven by the physical processes in its interior making the theory of stellar structure and evolution the most crucial ingredient for not only stellar evolution studies, but any field of astronomy which relies on the yields along stellar evolution. High-precision time-series photometric data assembled by recent space missions revealed that current models of stellar structure and evolution show major shortcomings already in the two earliest nuclear burning phases, impacting all subsequent phases prior to the formation of the end-of-life remnant. This white paper focuses specifically on the transport of chemical elements and of angular momentum in the stellar structure and evolution models of stars born with convective core, as revealed by their gravity-mode oscillations.