Star formation in the central 0.5 pc of the Milky Way

TL;DR

This paper reviews 30 years of technological advances that have improved understanding of the star population near the Milky Way's central black hole, shedding light on the origins of these stars despite the challenging environment.

Contribution

It provides a comprehensive overview of the evolution in observational techniques and current understanding of the nuclear star cluster's structure and dynamics near the Galactic Center.

Findings

Sufficient data now exists to analyze the 3D structure of the stellar population.

Current observations help discriminate between different star formation scenarios.

Technological progress has been crucial in resolving the 'paradox of youth'.

Abstract

The supermassive black hole candidate at the Galactic Center is surrounded by a parsec-scale star cluster, which contains a number of early type stars. The presence of such stars has been called a "paradox of youth" as star formation in the immediate vicinity of a supermassive black hole seemed difficult, as well as the transport of stars from far out in a massive-star lifetime. I will recall 30 years of technological developments which led to the current understanding of the nuclear cluster stellar population. The number of early type stars known at present is sufficient to access the 3D structure of this population and its dynamics, which in turn allows discriminating between the various possible origins proposed along the years.