Many stars are in binary or multiple star systems, where two or more stars orbit a common center of mass. Because the stars in a multiple star system have the same age, widely separated binaries and multiple stars provide good tests of stellar evolution theory. In close binary systems, the two stars often exchange mass and angular momentum, which changes their evolution compared to single stars. SSP scientists study the physical processes associated close and wide binary stars.
Gaspar Bakos, Nancy Brickhouse, Andrea Dupree, Scott Kenyon, John Raymond, Saku Vrtilek