DO stars
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| dcterms modified |   |
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| definition | A white dwarf whose spectrum shows strong lines of singly ionized helium He II; He I or H may be present. As a DO star cools, the He II will recombine with free electrons to form He I, eventually changing the DO type into a DB white dwarf. | ||||||
| narrower |
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| contributor | AAS_Frey.Katie_Admin original | ||||||