Metallicity and kinematical clues to the formation of the Local Group

TL;DR

This paper discusses how studying the kinematics and elemental abundances of stars in the Local Group can reveal insights into galaxy formation, evolution, and dark matter, providing a complementary approach to high-redshift observations.

Contribution

It demonstrates that analyzing individual stars' properties helps break degeneracies in galaxy formation models, offering new constraints on early universe conditions.

Findings

Stellar abundances and kinematics inform galaxy formation history.

Individual star analysis breaks degeneracies in galaxy evolution models.

Provides insights into dark matter and star formation processes.

Abstract

The kinematics and elemental abundances of resolved stars in the nearby Universe can be used to infer conditions at high redshift, trace how galaxies evolve and constrain the nature of dark matter. This approach is complementary to direct study of systems at high redshift, but I will show that analysis of individual stars allows one to break degeneracies, such as between star formation rate and stellar Initial Mass Function, that complicate the analysis of unresolved, distant galaxies.