Hr Diagram Colors. By studying h r diagrams later astronomers figured out the life cycles of stars. Brightnessis the amount of energy per second per area that falls on a detector such as a photographic plate or on the retina of our eyes.
The two most common star clusters are globular and open. By studying h r diagrams later astronomers figured out the life cycles of stars. Betelgeuseis a red supergiant while aldebaranand polluxare red orange giants not super at all pretty close to the main sequence.
Betelgeuseis a red supergiant while aldebaranand polluxare red orange giants not super at all pretty close to the main sequence.
The least common type is the blue giant upper left. The various forms of the hr diagram. By far the most prominent feature is the main sequence grey which runs from the upper left hot luminous stars to the bottom right cool faint stars of the diagram. Hr diagram basics figure 1 illustrates the general layout of an hr diagram.