Prof. Leroy joined the Ohio State faculty in 2015. An observer, he uses multi-wavelength observations to understand the interstellar medium, star formation, feedback, and how these relate to the formation and evolution of galaxies. An expert in long-wavelength observations, Prof. Leroy is an active user of the new generation of major radio and mm-wave facilities like the Atacama Large Millimeter Array (ALMA) and the Jansky Very Large Array (VLA).

Prof. Leroy is a leader in the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) collaboration. In 2017 he won an NSF CAREER award and he was awarded a Humboldt Fellowship in 2021. Prof. Leroy won the National Academy of Sciences Henry Draper Medal in 2025 for his pathbreaking efforts to characterize, in unprecedented detail, the physical nature of the interstellar medium and its relationship to star formation in nearby galaxies.