A Quick Guide to Nearby Young Association
Jonathan Gagn\'e

TL;DR
This paper reviews recent progress in identifying and studying nearby young stellar associations, emphasizing their importance for understanding star and planet formation, stellar evolution, and the characterization of exoplanets and substellar objects.
Contribution
It provides an overview of new methods for detecting and characterizing young associations and discusses their applications in age determination and studying isolated planetary-mass objects.
Findings
Large-scale Gaia data enables detection of low-density associations.
Accurate stellar ages are crucial for interpreting exoplanet and substellar evolution.
Recent discoveries include isolated planetary-mass objects in young associations.
Abstract
Nearby associations of stars which are coeval are important benchmark laboratories because they provide robust measurements of stellar ages. The study of such coeval groups makes it possible to better understand star formation by studying the initial mass function, the binary fraction or the circumstellar disks of stars, to determine how the initially dense populations of young stars gradually disperse to form the field population, and to shed light on how the properties of stars, exoplanets and substellar objects evolve with distinct snapshots along their lifetime. The advent of large-scale missions such as Gaia is reshaping our understanding or stellar kinematics in the Solar neighborhood and beyond, and offers the opportunity to detect a large number of loose, coeval stellar associations for the first time, which evaded prior detection because of their low density or the faintness of…
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Taxonomy
TopicsAstrophysics and Star Formation Studies · Astronomy and Astrophysical Research · Educational Leadership and Practices
