Linked from

The 14 pages that link to Horizontal branch, each with the reason it gives.

• Red giantCompared with: After helium ignition, many low-mass red giants move to this phase and contract.

• Asymptotic giant branchCompared with: It precedes the branch in many low-mass stars’ evolution.

• RR Lyrae variableNarrower topic: RR Lyrae stars are evolved horizontal-branch stars crossing the instability strip.

• Helium burningRelated: It is the stable phase that follows helium ignition in many low-mass stars.

• Helium flashBroader topic: After the flash subsides, low-mass stars settle into this stable phase.

• Omega CentauriRelated: Its stars form a prominent feature in Omega Centauri’s observed stellar populations.

• Instability stripRelated: Many RR Lyrae variables cross the strip while occupying the horizontal branch.

• Red-giant branchCompared with: It contrasts with the branch’s shell-burning stars and marks a later phase.

• SubgiantCompared with: Its stars are in a later, core-helium-burning phase than subgiants.

• Type II CepheidRelated: Some Type II Cepheids evolve from old, low-mass stars associated with this stage.

• Giant starBroader topic: It follows the helium flash and includes red-clump giants.

• Messier 13Related: Its stars help astronomers infer the cluster's age and chemical history.

• Messier 15Related: Its stars populate a prominent horizontal branch in Messier 15's color–magnitude diagram.

• SubdwarfCompared with: Ordinary horizontal-branch stars occupy a different evolutionary region from classic metal-poor subdwarfs.