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 does the Main Sequence represent in the HR Diagram?

Back

The Main Sequence is a continuous and distinctive band of stars that appears on the HR Diagram, where stars spend most of their lives fusing hydrogen into helium in their cores.

Front

What spectral class does our sun belong to?

Back

G

Front

What is a Red Giant?

Back

A Red Giant is a late stage in the life cycle of a star, characterized by a large size and a cooler temperature, typically found in the upper right area of the HR Diagram.

Front

Where are Red Giants located on the HR Diagram?

Back

Area X.

Front

What is the temperature range of Main Sequence stars?

Back

Main Sequence stars can range from about 2,500 K (cooler stars) to over 30,000 K (hotter stars).

Front

What is the significance of the color of a star in the HR Diagram?

Back

The color of a star indicates its temperature; blue stars are hotter, while red stars are cooler.

Front

What are Supergiants?

Back

Supergiants are among the largest stars in the universe, found in the upper left area of the HR Diagram, and they have high luminosities and low temperatures.

Front

What is the relationship between a star's mass and its position on the HR Diagram?

Back

More massive stars are typically found on the left side of the HR Diagram, while less massive stars are found on the right.

Front

What is the main characteristic of stars in the Main Sequence?

Back

Stars in the Main Sequence are primarily fusing hydrogen into helium in their cores.