Some protostars, when they evolve onto the main sequence, employ radiation to carry material outward from the core to some region midway through the star. Convection then carries the energy outward to the surface. Which stars show this characteristic?

Question

Quizplus · Accepted Answer

This characteristic is shown by intermediate mass stars, from about 0.4 M ε up to about 4 M ε. The smallest stars do not have enough mass to generate significant radiation, while the largest stars have enough radiation pressure to prevent material from collapsing inwards, leading to a different mechanism of energy transport.

Some Protostars, When They Evolve onto the Main Sequence, Employ