The Little Engines That Could? Globular clusters contribute significantly to reionization-era star formation
The Little Engines That Could? Globular clusters contribute significantly to reionization-era star formation
Metal-poor globular clusters (GCs) are both numerous and ancient, which indicates that they may be important contributors to ionizing radiation in the reionization era. Starting from the observed number density and stellar mass function of old GCs at $z=0$, I compute the contribution of GCs to ultraviolet luminosity functions (UVLFs) …