List stages in the evolution of a low- mass star

Brainliest?

Explanation:

Once the hydrogen fuel in the core of a low mass star is used up, this marks the Main-Sequence Turnoff Point. Hydrogen fusion is still occurring, but in a shell that surrounds the core. All that is left in the core is helium ash. In a nutshell, this is what happens next:

Hydrogen shell continues fusion

Helium ash from hydrogen shell collects at the core - the core has remnant helium ash from prior core fusion

Helium ash build as does pressure and temperature - helium flash then core helium fusion

hydrogen shell and helium core fusion continues - core helium fusion ends soon (more heat, faster burning)

Ash in core now carbon, helium shell burning begins, hydrogen shell burning continues

Carbon ash compresses as outer layers fluctuate

Outer layers shed in planetary nebula

Inert, compressed carbon core (White Dwarf) remains

come closer and become far apart and become steam/gas

wavelegth as in spectrum red oygbiv