This section is part of the HSC Physic syllabus Module 8: From the Universe to the Atom.
Let’s start to investigate the key features of stellar spectra and describe how these are used to classify stars.
Classification of Stars
Stars are classified by their spectra (the elements that they absorb) and their temperature.
Now we can learn about the classifications on a Hertzsprung-Russell diagram.
The Hertzsprung-Russell Diagram is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage.