17.48: In the binary star system shown, the two
g)z2s3n + aj+uy8grm . bi-cszstars follow circular orbits about the system’s center of mass. The stars are separated by a distance D that is large compared to their size and
gym +8gus-2ianrj). zs bzc3+ are subject only to their mutual gravitational attraction. The orbital period of the star of mass M is T. Which one of the following choices represents the total mass of the binary star system?