Time-resolved surveys of stellar clusters

TL;DR

Multi-epoch surveys provide crucial time-resolved data that enhance our understanding of stellar clusters through improved astrometry, photometry, and spectroscopy, enabling studies of distances, stellar evolution, and internal structures.

Contribution

This paper highlights the importance of multi-epoch surveys for studying open clusters and presents specific results and future survey plans that leverage time-resolved observations.

Findings

Distance measurement to the Pleiades improved

Insights into angular momentum evolution of low-mass stars

Applications of asteroseismology to cluster stars

Abstract

We describe the information that can be gained when a survey is done multi-epoch, and its particular impact for open clusters. We first explain the irreplaceable information that multi-epoch observations are giving within astrometry, photometry and spectroscopy. Then we give three examples for results on open clusters from multi-epoch surveys, namely, the distance to the Pleiades, the angular momentum evolution of low mass stars and asteroseismology. Finally we mention several very large surveys, which are ongoing or planned for the future, Gaia, JASMINE, LSST, and VVV.