My research interests lie in understanding the characteristics and evolution of star-forming galaxies. The details of galaxy characteristics are best studied in nearby systems where spatial resolution is high, whereas studying how galaxies evolve with time necessarily requires obtaining data from a wide range of cosmic epochs (and thus cosmic distances). Hence, I study both relatively nearby and fairly distant galaxies. "Nearby" implies closer than about 30 Mpc, a distance that takes light 100 million years to traverse; "distant" in my research involves up to ten billion light years. My ground-based observing programs have taken me to Hawaii, California, Arizona, New Mexico, West Virginia, Puerto Rico, Chile, and nearby Jelm Mountain. 





Infrared Space-Based Studies of Galaxies

Space-based data have provided the framework for my primary area of research, the infrared properties of galaxies.  I've used the Infrared Space Observatory, the Spitzer Space Telescope, and the Herschel Space Observatory.  One of my specialties is modeling the infrared spectral energy distributions of normal star-forming galaxies, and I also have used infrared spectroscopy to develop diagnostics that distinguish between galaxies powered by AGN and those dominated by star formation.  My projects include SINGS, LVL, 5MUSES, EDGES, and KINGFISH.  This research is supported by NASA.






Optical Ground-Based Studies of Galaxies

I have led or been involved in multiple studies of the Hα emission from galaxies.  The WySH project deeply imaged Hα line emission from star-forming galaxies at six different epochs in time, to track the evolution of the cosmic star formation rate.  We used the Wyoming Infrared Observatory's 2.3 m telescope and two Kitt Peak telescopes.  A related ongoing project NewHα utilizes the Cerro Tololo and Las Campanas observatories, both in Chile, to characterize the properties of high-redshift star-forming galaxies.  This research has been supported by a CAREER award from NSF.  See the full press release.






Résumé/CV: full brief 



Publications: pdf html 




Research: Spitzer SINGS Spitzer 5MUSES Spitzer LVL NSF WySH Herschel KINGFISH SED models rotation curves 



Students: Cook Staudaher Miller Pandey Thatcher Hanson 



Group: members photos






Background image by Shawn Staudaher: Infrared three-color images of over 250 nearby galaxies