H R Diagram Radius. Einar hertzsprung was a danish. Using the suns radius as a unit estimate the radius of a selected red giant star upper right in the h r diagram and a white dwarf lower left.
The fact that the h r diagrams for the nearby stars the pleiades star cluster and the m3 star cluster are all different leads us to look for other differences in these groups of stars that might explain it. It was found that particular types of stars lie. Using the suns radius as a unit estimate the radius of a selected red giant star upper right in the h r diagram and a white dwarf lower left.
The red giant prgĻargtrg4.
The band in the h r diagram called the main sequence ranges of stellar properties. The band in the h r diagram called the main sequence ranges of stellar properties. The hertzsprung russell h r diagram an extremely useful tool for understanding the evolution of a star is the h r diagram first devised in the early part of the century. We can combine these formula to deduce the size radii of stars in different portions of the h r diagram.