During which phase of the evolution of a low-mass star does it have two separate regions of nuclear burning occurring in its interior?
A) pre-main sequence
B) main sequence
C) red giant
D) horizontal branch
E) white dwarf

Question

Quizplus · Accepted Answer

During the horizontal branch phase, a low-mass star has two separate regions of nuclear burning: helium fusion in the core and hydrogen fusion in a shell surrounding the core.

During Which Phase of the Evolution of a Low-Mass Star