For a nova to occur, the system must have already been a(n):
A)astrometric binary.
B)detached binary.
C)spectroscopic binary.
D)mass-transfer binary.
E)eclipsing binary.

Question

Quizplus · Accepted Answer

A nova occurs when material from a companion star in a mass-transfer binary system accretes onto a white dwarf, triggering a thermonuclear explosion. Therefore, a system must be a mass-transfer binary for a nova to occur. In a mass-transfer binary system, one star is transferring material onto its companion star. This can lead to a buildup of material on the surface of the receiving star, eventually triggering a runaway fusion reaction and causing a nova to occur.

For a Nova to Occur, the System Must Have Already