Hertzsprung-Russell Diagram Essay

This essay has a total of 534 words and 3 pages.

Hertzsprung-Russell Diagram

Anonymous

The Hertzsprung-Russell Diagram or, the H-R Diagram for short, is a graph which plots
stars according to their temperature and absolute magnitude. This graph reveals a pattern,
which in fact is quite interesting. The H-R Diagram is named for the two astronomers,
Ejnar Hertzsprung and Henry Russell, who discovered this pattern of stars. These two
astronomers independently discovered that comparing magnitudes and spectral class (color)
of stars yielded a lot of information about them.


One key purpose of the H-R diagram is to show the relationship between temperature and
absolute magnitude of stars. The type of temperature measurement used is Kelvin, where the
zero point is equal to -273.16 C. On the H-R Diagram, the temperature of degrees Kelvin
ranges from 3,000 to 30,000. The absolute magnitude of stars on the H-R Diagram ranges
from 15 to -10. Absolute magnitude is how bright stars would appear if they were
positioned at 32.6 light years away from earth. On this scale, the lower the number, the
brighter the star. Thus, a start with an absolute magnitude of -10 would be much brighter
than a star with an absolute magnitude of 15.


The two astronomers found many patterns after developing their graph. They found that 90%
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  • Hertzsprung-Russell Diagram
    Hertzsprung-Russell Diagram Anonymous The Hertzsprung-Russell Diagram or, the H-R Diagram for short, is a graph which plots stars according to their temperature and absolute magnitude. This graph reveals a pattern, which in fact is quite interesting. The H-R Diagram is named for the two astronomers, Ejnar Hertzsprung and Henry Russell, who discovered this pattern of stars. These two astronomers independently discovered that comparing magnitudes and spectral class (color) of stars yielded a lot o