Observations and interpretation of solar-like oscillations in red-giant stars

TL;DR

This paper reviews the progress in observing and interpreting solar-like oscillations in red-giant stars, highlighting advancements in instrumentation and data quality that have led to new discoveries and future prospects.

Contribution

It provides a comprehensive overview of the development of solar-like oscillation studies in red giants over the past decade, emphasizing observational improvements and interpretative challenges.

Findings

Increased number of observed red-giant stars with solar-like oscillations.

Enhanced data quality due to advanced instrumentation and space missions.

Identification of challenges and opportunities for future research.

Abstract

Over the past decade the study of solar-like oscillations in red-giant stars has developed significantly. Not only the number of red-giant stars for which solar-like oscillations have been observed has increased, but the quality of these observations has improved as well. These steps forward were possible thanks to the development of instrumentation to measure radial velocity variations with a precision of the order of m/s, as well as the launch of dedicated space missions, which provide timeseries of data with unprecedented photometric precision. Many more exciting discoveries are to be expected in the (near) future. This article provides an overview of the development of the field over the last decade, discusses difficulties encountered and overcome in interpreting the observational data, and addresses some challenges and opportunities for further research.