White Dwarf Properties
Initial Mass Final Mass Composition
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0.08 - 0.25 0.05 - 0.2 He
0.25 - 8 0.5 - 1.4 C,O
8 - 10 0.5 - 1.4 O,Ne,Mg
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Radii – typically 1000-5000 km (smaller than Earth!)
Luminosities – 10-2 to 10-5 solar luminosities
Densities – typically 105 to 107  gm/cc
Temperatures – anywhere from 100,000 to 2500 K.
The small radii and luminosities mean that we can only see them if close-by, or by their effects in binary systems.