Using asteroseismology to characterise exoplanet host stars

TL;DR

Asteroseismology, empowered by space missions like Kepler, has revolutionized the characterization of exoplanet host stars by providing precise stellar parameters, which improve understanding of exoplanet properties and system architectures.

Contribution

This paper reviews how asteroseismology enhances exoplanet research, focusing on stellar characterization and system dynamics, highlighting recent advances and methodologies.

Findings

Precise stellar radii improve exoplanet size estimates.

Asteroseismology constrains exoplanet eccentricities.

Enhanced understanding of planetary system architectures.

Abstract

The last decade has seen a revolution in the field of asteroseismology - the study of stellar pulsations. It has become a powerful method to precisely characterise exoplanet host stars, and as a consequence also the exoplanets themselves. This synergy between asteroseismology and exoplanet science has flourished in large part due to space missions such as $\textit{Kepler}$, which have provided high-quality data that can be used for both types of studies. Perhaps the primary contribution from asteroseismology to the research on transiting exoplanets is the determination of very precise stellar radii that translate into precise planetary radii, but asteroseismology has also proven useful in constraining eccentricities of exoplanets as well as the dynamical architecture of planetary systems. In this contribution, we introduce some basic principles of asteroseismology and review current synergies between the two fields.