HR Diagram

Front

What does the HR Diagram represent?

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 are the main categories of stars in the HR Diagram?

Back

The main categories of stars in the HR Diagram are Main Sequence, Giants, Supergiants, and White Dwarfs.

Front

What characterizes Main Sequence stars?

Back

Main Sequence stars are characterized by their stable hydrogen burning in their cores, and they fall along a diagonal band on the HR Diagram.

Front

What is the relationship between brightness and temperature in the HR Diagram?

Back

In the HR Diagram, hotter stars are generally brighter, while cooler stars are dimmer.

Front

What is the significance of area B in the HR Diagram?

Back

Area B represents stars that are brighter and cooler, typically found in the upper right section of the HR Diagram.

Front

What does area D in the HR Diagram indicate?

Back

Area D indicates stars that are dimmer and cooler, typically found in the lower right section of the HR Diagram.

Front

How does Barnard's Star compare to the Sun in terms of brightness and temperature?

Back

Barnard's Star is less bright than the Sun and cooler.

Front

Which type of star has the lowest temperature in the HR Diagram?

Back

The stars located in the lower right corner of the HR Diagram typically have the lowest temperatures.

Front

What is a Supergiant star?

Back

A Supergiant star is a very large star that is much brighter than a Main Sequence star of the same temperature.

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.