central star of planetary nebula Comparison Table

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central star of planetary nebula comparison table

Subject has synonym has definition

PG 1159 star pre-degenerate Very hot star with strong O VI and C IV lines, which is an X-ray emitter. Probably these stars are the central stars of planetary nebulae that have dissipated their envelopes.

ultraviolet star planerary nuclei Very hot prewhite-dwarf star; usually the hot central star of a planetary nebula which is contracting toward the white-dwarf state.

ultraviolet-bright star planerary nuclei Star that is brighter than horizontal-branch stars and bluer than giant-branch stars.

Subject	has synonym	has definition
PG 1159 star	pre-degenerate	Very hot star with strong O VI and C IV lines, which is an X-ray emitter. Probably these stars are the central stars of planetary nebulae that have dissipated their envelopes.
ultraviolet star	planerary nuclei	Very hot prewhite-dwarf star; usually the hot central star of a planetary nebula which is contracting toward the white-dwarf state.
ultraviolet-bright star	planerary nuclei	Star that is brighter than horizontal-branch stars and bluer than giant-branch stars.

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