What is some of the most important accomplishments of Helen Hogg?

Helen Hogg was a prominent Canadian astronomer known for her significant contributions to the field of astrophysics, particularly in the study of globular clusters. She was instrumental in advancing our understanding of the structure and evolution of these dense star clusters. Additionally, Hogg made notable contributions to the study of variable stars and published extensively, helping to educate and inspire future generations of astronomers. Her work earned her recognition within the scientific community, including serving as the first female president of the Canadian Astronomical Society.