You can read a description, and find a typical graph, here:
http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram
"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."
You can read a description, and find a typical graph, here:
http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram
"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."
You can read a description, and find a typical graph, here:
http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram
"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."
You can read a description, and find a typical graph, here:
http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram
"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."
The Hertzsprung-Russell diagram was created - as the name suggests - by Ejnar Hertzsprung and Henry Norris Russell in 1910
Enjar Hertzsprung lived in 1873-1967 and Henry Russell lived in 1877-1957. They were scientists who worked separtely. They found the same answer about the temperature and color of stars. The diagram that they made is called the Hertzsprung-Russell diargram. It shows the connection between surface temperature and color.The discoverers of the famous Hertzsprung-Russel diagram (HR diagram), which turned out to be an important tool for the analysis of stars.
The diagram was created by Ejnar Hertzsprung and Henry Norris Russell aound 1910.
The answer to this question is Hertzsprung-Russell diagram
Ejnar Hertzsprung and Henry Russell H for Hertzsprung and R for Russell
This plot is commonly referred to as a Hertzsprung-Russell (H-R) diagram, named after the astronomers Ejnar Hertzsprung and Henry Norris Russell who independently developed it in the early 20th century.
The main sequence - the region across the middle of the diagram.
One axis has the color, the other the magnitude.
Only if you are very, very careful.
Cool and luminous stars would be located in the top right corner of a Hertzsprung-Russell diagram, in the region known as the red giant branch.
Its called an HR diagram or a Hertzsprung-Russell diagram.
The Hertzsprung-Russell diagram, or H-R diagram, was created in 1911 by Ejnar Hertzsprung and Henry Norris Russell. They plotted the luminosity of stars against their surface temperature to classify and study stellar populations. This diagram revolutionized our understanding of stars and their life cycles.