HR-Diagram

Front

What is the HR-Diagram?

Back

The HR-Diagram, or Hertzsprung-Russell Diagram, is a scatter plot that shows the relationship between the luminosity (brightness) and temperature of stars.

Front

What does the vertical axis of the HR-Diagram represent?

Back

The vertical axis represents the luminosity or brightness of stars.

Front

What does the horizontal axis of the HR-Diagram represent?

Back

The horizontal axis represents the temperature of stars, typically measured in Kelvin.

Front

What type of stars are found on the main sequence of the HR-Diagram?

Back

Main sequence stars are those that are in the stable phase of hydrogen burning, including stars like our Sun.

Front

How does temperature change as you move from the bottom to the top of the HR-Diagram?

Back

As you move from the bottom to the top of the HR-Diagram, the temperature of stars increases.

Front

What is the relationship between a star's mass and its position on the main sequence?

Back

Hot, bright main sequence stars have more mass compared to cool, faint main sequence stars.

Front

Which type of star is the hottest on the HR-Diagram?

Back

Blue stars are the hottest stars on the HR-Diagram.

Front

Which type of star is the coolest on the HR-Diagram?

Back

Red stars are the coolest stars on the HR-Diagram.

Front

What is a White Dwarf?

Back

A White Dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

What is a Giant star?

Back

Giant stars are large stars that have expanded and cooled, often found in the upper right of the HR-Diagram.