The outer regions of globular clusters (GCs) can enable us to answer many fundamental questions. The outskirts of GCs are still uncharted territories observationally. A very efficient way to explore them is through high- precision proper motions of low-mass stars over a large field of view. To do this, WFIRST represents the best observational tool.
Astro2020: Decadal Survey on Astronomy and Astrophysics
- Pub Date:
- May 2019