My research focuses on the use of radio, millimeter, and submillimeter observations of interstellar matter to probe how galaxy evolution unfolds in the nearby and distant universe. Particular interests include the properties of dusty star-forming galaxies — e.g., low-z ultraluminous infrared galaxies (ULIRGs), and high-z submillimeter galaxies (SMGs) like those seen by the Atacama Cosmology Telescope (ACT) — and the growth of stellar disks and central black holes in nearby, normal galaxies. I am also interested in the cosmic evolution of neutral atomic hydrogen, which I will be studying out to z = 1.4 with South Africa's new MeerKAT interferometer in the context of the 3424-hour LADUMA survey. LADUMA's status as one of the three top-ranked MeerKAT Large Survey Projects was reconfirmed in June 2017 by an international review panel.


I am grateful to U.S. taxpayers for their support of my research via the following peer-reviewed grants from the National Science Foundation: via student observing support from the National Radio Astronomy Observatory for the following peer-reviewed projects: and via funding for analysis of data from NASA missions for the following peer-reviewed projects: