Nearby Young Stars and Young Moving Groups

TL;DR

This review discusses how nearby young moving groups (NYMGs) serve as valuable laboratories for studying early stellar evolution, magnetic activity, accretion signatures, and disk irradiation through X-ray observations, highlighting future prospects with advanced X-ray facilities.

Contribution

It synthesizes current knowledge on NYMGs and emphasizes the importance of X-ray studies in understanding early stellar and planetary evolution, outlining future observational opportunities.

Findings

NYMGs enable detailed studies of pre-main sequence stars.

X-ray observations reveal magnetic activity and accretion processes.

Future X-ray facilities will enhance understanding of stellar evolution.

Abstract

The past two decades have seen dramatic progress in our knowledge of the population of stars of age $\lesssim$150 Myr that lie within $\sim$100 pc of the Sun. Most such stars are found in loose kinematic groups ("nearby young moving groups"; NYMGs). The proximity of NYMGs and their members facilitates studies of the X-ray properties of coeval groups of pre-main sequence (pre-MS) stars as well as of individual pre-MS systems. In this review, we focus on how NYMG X-ray studies provide unique insight into the early evolution of stellar magnetic activity, the X-ray signatures of accretion, and the irradiation and dissipation of protoplanetary disks by high-energy photons originating with their host pre-MS stars. We discuss the likely impacts of the next generation of X-ray observing facilities on these aspects of the study of NYMGs and their members.