H R Diagram Picture Of Star Evolution. The diagram that changed the universe. Stages of stellar evolution occupy specific regions on the h r diagram and exhibit similar properties.
Match the given main sequence lifetimes with the star that would result from each evolutionary track. It shows stars according to their temperature and brightness. In this graphic construction each star is a point marked on the ordinate by its brightness luminosity or absolute magnitude and on the abscissa by its spectral type or surface temperature.
This is the h r diagram.
In this context tracing out a path has nothing to do with the stars. Developed independently in the early 1900s by ejnar hertzsprung and henry norris russell it plots the temperature of stars against their luminosity the theoretical hr diagram or the colour of stars or spectral type against their absolute magnitude the. H r diagram picture of star evolution. Look at the h r diagram for globular cluster m80 we do see the stars in various stages of evolution just as the theory predicts helium flash re stated after h burning stops in core core is all helium core collapses due to loss of internal pressure no hydrostatic eq collapse stopped by electron degeneracy.