From 2002 to 2007, she served as the Associate Dean for Academic Affairs of the College of Science and Engineering at University of Minnesota.
This empirical boundary, often referred to in the astronomical literature as the Humphreys-Davidson Limit, was not predicted by theory or the stellar structure models and evolutionary tracks.
[7] They suggested that the most massive hot stars could not evolve to cooler temperatures because of their instabilities resulting in high mass loss.
[7] Her later research has been focused on the final stages of massive stars evolution often dominated by high mass loss events as observed in eta Carinae,[8] and the warm and cool hypergiants such as VY CMa[9] and IRC +10420.
They produced an on-line searchable catalog of the digitized scans of the famous Palomar Observatory Sky Survey, and were the first group to use neural networks to separate the images of stars and galaxies.