What factor is most important in determining a star's position on the main sequence and subsequent evolution?

Question

Quizplus · Accepted Answer

The most important factor in determining a star's position on the main sequence and subsequent evolution is its mass. Mass determines a star's temperature, pressure, and radius, all of which impact its evolution. Higher-mass stars have higher temperatures and greater pressure at their cores, allowing them to fuse hydrogen more efficiently and remain on the main sequence for a shorter period of time. Lower-mass stars have cooler temperatures, lower pressure at their cores, and fuse hydrogen more slowly, allowing them to remain on the main sequence for a longer period of time. Ultimately, a star's mass determines whether it will become a red giant, white dwarf, or supernova.

What Factor Is Most Important in Determining a Star's Position