Recent Graduates Graduate Student

Photo of Garrett Keating

Garrett Keating

Research Interests

Extragalactic Astronomy and Cosmology, Galaxy Evolution, the Interstellar Medium (ISM), Radio Astronomy Instrumentation


I am former graduate student (graduated 2016). My thesis work consisted of measuring the molecular gas contents of "normal", Milky Way-like galaxies in the early Universe (z~3). As of Fall 2016, I am now a Submillimeter Array Fellow at the Harvard-Smithsonian Center for Astrophysics.


My thesis research has been focused on the use of tomographic mapping of line emission from early galaxies -- a technique colloquially referred to as ``intensity mapping'' -- to explore the evolution and abundance of molecular gas in early galaxies. To this end, I have served as the PI for the CO Power Spectrum Survey (COPSS), making use of over 6000 hours of archival data and new targeted observations with the SZA to explore the molecular gas contents of normal, low-mass galaxies in the era leading up to the peak of cosmic star formation. The results of this survey will be a powerful tool for exploring the broad population of star-forming galaxies in the early Universe, and will offer a unique probe for examining the growth of large-scale structure and galaxy clusters.