Horizontal branch stars
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Information for Authority record
Name (Latin)
Horizontal branch stars
Other forms of name
Stars, Horizontal branch
See Also From tracing topical name
HR diagrams
Stars Globular clusters
MARC
MARC
Other Identifiers
Wikidata:
Q50076
Library of congress:
sh 87005233
Sources of Information
- Work cat.: Horizontal-branch and UV-bright stars : the proceedings ... 1985.
- Astron. journal, 1944-75:Index, p. 65 (horizontal branch)
- Problems in stellar atmospheres and envelopes:p. 149-169.
- NASA(Horizontal branch stars)
- Macmillan dict. astron.:Under Horizontal branch.
- Dict. astron., space atmos. phen.(Under Horizontal branch; Stars in an H-R diagram [that demonstrates correlation between spectral type and luminosity of stars], usu. of a globular cluster, representing a range in spectral types but sharing roughly zero absolute magnitude)
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File:He1523a.jpg
ESO, European Southern Observatory, CC BY 4.0
File:M3 color magnitude diagram.jpg
R. J. Hall, CC SA 1.0
Wikipedia description:
The horizontal branch (HB) is a stage of stellar evolution that immediately follows the red-giant branch in stars whose masses are similar to the Sun's. Horizontal-branch stars are powered by helium fusion in the core (via the triple-alpha process) and by hydrogen fusion (via the CNO cycle) in a shell surrounding the core. The onset of core helium fusion at the tip of the red-giant branch causes substantial changes in stellar structure, resulting in an overall reduction in luminosity, some contraction of the stellar envelope, and the surface reaching higher temperatures.
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