HR-Diagram

Front

What is the HR Diagram?

Back

The HR Diagram (Hertzsprung-Russell Diagram) is a scatter plot that shows the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What color represents Zeta Eridani on the HR Diagram?

Back

Blue.

Front

What does area B on the HR Diagram represent?

Back

Brighter and Cooler stars.

Front

Which type of stars belong to spectral class G and have the highest luminosity?

Back

Super Giants.

Front

Which star is the coldest according to the HR Diagram?

Back

Red Star.

Front

What characteristics are used to classify stars?

Back

Temperature/color and brightness.

Front

What is the relationship between a star's temperature and its color?

Back

Hotter stars appear blue, while cooler stars appear red.

Front

What are Main Sequence Stars?

Back

Stars that are in the stable phase of hydrogen burning, found along the diagonal band of the HR Diagram.

Front

What are Giants in the context of the HR Diagram?

Back

Stars that are larger and more luminous than Main Sequence stars but not as luminous as Super Giants.

Front

What are Super Giants?

Back

Extremely large and luminous stars that are found at the top of the HR Diagram.