Simple Hr Diagram. The hertzsprung russell diagram hr diagram is one of the most important tools in the study of stellar evolution. Figure 3 2 sample schemas oe and pm illustrates schema pm.
A hertzsprung russell diagram sometimes abbreviated to hr diagram is essentially a description of the different types of stars. It plots spectral class or temperature on the x axis and absolute magnitude or luminosity on the y axis. As written it produces a simple hr diagram with a box marking the location of our sun.
Plot the luminosity on the y axis with brighter stars going toward the top.
Figure 3 2 sample schemas oe and pm illustrates schema pm. Hr diagram simple hr diagram 9 out of 10 based on 30 ratings. Devised around one hundred years ago by scientists ejnar hertzsprung and henry norris russell it plots the spectral class of numbers of stars along the x axis and their absolute magnitude along the y axis. The hr diagram is a very useful tool for helping understand the differences between the different types of stars and how a star changes throughout its life.