H-R Diagram

Front

What is the H-R Diagram?

Back

The Hertzsprung-Russell (H-R) Diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What category contains the most stars in the H-R Diagram?

Back

Main Sequence.

Front

What type of stars are the hottest on the H-R Diagram?

Back

Blue stars.

Front

How does a red supergiant compare to a white dwarf?

Back

A red supergiant is colder and brighter than a white dwarf.

Front

What type of star is our sun classified as?

Back

Main sequence.

Front

What are the coolest stars on the H-R Diagram?

Back

Red stars.

Front

What does the vertical axis of the H-R Diagram represent?

Back

The vertical axis represents the luminosity or absolute magnitude of stars.

Front

What does the horizontal axis of the H-R Diagram represent?

Back

The horizontal axis represents the surface temperature of stars, usually in Kelvin.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is typically the size of Earth but has a mass comparable to that of the Sun.

Front

What are supergiants?

Back

Supergiants are among the largest stars in the universe, with high luminosity and size, located above the main sequence on the H-R Diagram.