# Pulsating star research and the Gaia revolution

## TL;DR

This paper reviews how the ESA Gaia mission's data releases are revolutionizing the study of pulsating variable stars, providing new data and insights that advance the field significantly.

## Contribution

It provides an overview of Gaia's impact on pulsating star research, summarizing data releases and future plans for variable star studies.

## Key findings

- First Gaia data release includes 3,194 Cepheids and RR Lyrae with time series.
- Gaia's astrometric data has been used in numerous pulsating star studies.
- Future Gaia data releases are expected to further transform variable star research.

## Abstract

In this article we present an overview of the ESA Gaia mission and of the unprecedented impact that Gaia will have on the field of variable star research. We summarise the contents and impact of the first Gaia data release on the description of variability phenomena, with particular emphasis on pulsating star research. The Tycho-Gaia astrometric solution, although limited to 2.1 million stars, has been used in many studies related to pulsating stars. Furthermore a set of 3,194 Cepheids and RR Lyrae stars with their times series have been released. Finally we present the plans for the ongoing study of variable phenomena with Gaia and highlight some of the possible impacts of the second data release on variable, and specifically, pulsating stars.