HR 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 does the left side of the H-R Diagram represent?

Back

The left side of the H-R Diagram represents hotter stars.

Front

What does the right side of the H-R Diagram represent?

Back

The right side of the H-R Diagram represents cooler stars.

Front

What is the significance of the vertical axis on the H-R Diagram?

Back

The vertical axis represents the luminosity or brightness of stars.

Front

What type of stars are found in the upper left corner of the H-R Diagram?

Back

The upper left corner contains hot, bright stars, often referred to as main sequence stars.

Front

What type of stars are found in the lower right corner of the H-R Diagram?

Back

The lower right corner contains cool, dim stars, often referred to as red dwarfs.

Front

What is a red giant star?

Back

A red giant star is a luminous giant star of low or intermediate mass that has exhausted the hydrogen in its core and has expanded and cooled.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnants of a low or medium mass star after it has exhausted its nuclear fuel.

Front

What does it mean if a star is brighter and cooler?

Back

A star that is brighter and cooler is typically larger in size, as it emits more light despite having a lower surface temperature.

Front

What is Barnard's Star?

Back

Barnard's Star is a red dwarf star located in the constellation Ophiuchus, known for being one of the closest stars to Earth.