stellar evolution
changes to a star over its lifespan
horizontal branch
stars powered by helium fusion
asymptotic giant branch
stars powered by fusion of hydrogen and helium in shell with an inactive core of carbon and oxygen
asymptotic giant branch
stars powered by fusion of hydrogen and helium in shell with an inactive core of carbon and oxygen
red clump
Red Clump Star
tip of the red giant branch
distance indicator in astronomy
blue loop
stage in the life of an evolved star where it changes from a cool star to a hotter one before cooling again
white dwarf
type of stellar remnant composed mostly of electron-degenerate matter
red giant branch
stars powered by fusion of hydrogen in shell with an inactive core of helium
main sequence
distinctive band of stars on Hertzsprung–Russell diagrams
main sequence
distinctive band of stars on Hertzsprung–Russell diagrams