Three Massachusetts residents were among the 24 fellows who will each receive $625,000 over the next five years from the John D. and Catherine T. MacArthur Foundation. They are:
► Robin Fleming, 57, Chestnut Hill. A medieval historian at Boston College who has written extensively on the lives of common people in Britain in the years after the fall of the Roman Empire.
► Dina Katabi, 42, Cambridge. A computer scientist at MIT who has worked at interfacing computer science and electrical engineering to improve the speed and security of data exchange.
► Sara Seager, 42, Cambridge. Astrophysicist at MIT creating a theoretical framework for determining the characteristics of planets outside our solar system.