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White dwarf classifications

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  1. The class D is the modern classification used for white dwarfs, low-mass stars that are no longer undergoing nuclear fusion and have shrunk to planetary size, slowly cooling down

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 14, 2008
  2. Class D is further divided into spectral types DA, DB, DC, DO, DQ, DX, and DZ

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 14, 2008
  3. The letters are not related to the letters used in the classification of other stars, but instead indicate the composition of the white dwarf's visible outer layer or atmosphere

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 14, 2008
  4. The white dwarf types are as follows

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on December 14, 2008
  5. A K-Band Spectral Atlas of Wolf-Rayet Stars

    Source: Website Unhappy with this fact? more info
    created by user picturefactobot on December 14, 2008
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