What particular and very important phenomenon frequently occurs in binary star systems where the stars are very close together?
A) The less massive star, in its elliptical orbit, repeatedly passes through the thin, extended atmosphere of the second star, producing periodic rises and falls in light output from the star system.
B) The radiation from the hotter star slowly heats and evaporates away the cooler star.
C) Mass lost from one star is deposited on its companion.
D) The less massive star spirals slowly into its more massive companion because of tidal interactions.

Question

Quizplus · Accepted Answer

Mass transfer is a common phenomenon in close binary star systems, where material from one star can be pulled onto its companion, often through an accretion disk. This process can significantly affect the evolution of both stars and is a key area of study in astrophysics.

What Particular and Very Important Phenomenon Frequently Occurs in Binary