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 stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What category is our Sun located in on the HR Diagram?

Back

Main Sequence.

Front

How is our Sun classified in terms of size and temperature?

Back

Medium size with medium temperature.

Front

What characteristics describe stars located in the upper left area of the HR Diagram?

Back

Bright and Hot.

Front

Which type of star is the coldest?

Back

Red Star.

Front

What are the three main types of galaxies?

Back

Spiral, Elliptical, and Irregular.

Front

What does the term 'Main Sequence' refer to?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Front

What is a White Dwarf?

Back

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

Front

What is a Supergiant star?

Back

A very large star that is even more massive than a giant star, often found in the upper part of the HR Diagram.

Front

What is the significance of the color of a star?

Back

The color of a star indicates its temperature; blue stars are the hottest, while red stars are the coolest.