17.48: In the binary star system shown, the two stars follow circular orbits abo
t.zssh+s2 9t out the system’s center of mass. The stars are separated by a distance D that is large compared to their size a
tt.sos29z h+s nd 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?