White Dwarfs

Physical theory predicts white dwarfs. Are they there?

Where would such objects be on HR diagram?

What do we see?

The objects in the lower left of the HR diagram are called ``white dwarfs.'' Dwarfs because they are small. White because they are still hot. Their luminosity is low because, even though they are hot, they are so small. Over billions of years, they will cool off and become black dwarfs.

Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA soper@bovine.uoregon.edu