How Do Two Unequal Mass Stars Move Around Each Other

question 30

Multiple Choice

How do two unequal mass stars move around each other in a binary system?

• A) In a common elliptical orbit,always remaining diametrically opposite to each other through one of the foci of the ellipse
• B) In straight lines,back and forth past each other
• C) In elliptical orbits,about a common "center of mass"
• D) The low-mass star moves in a circular orbit around the stationary high-mass star.