KnowraRR Lyrae variableLinked fromLinked fromThe 16 pages that link to RR Lyrae variable, each with the reason it gives.All 16Broader topic 8Related 2Compared with 6Cepheid variableCompared with: RR Lyrae stars are older and fainter than classical Cepheids, making them useful for different stellar populations.Standard candleBroader topic: Its calibrated brightness helps measure distances within the Milky Way and nearby galaxies.Variable starBroader topic: Its predictable luminosity helps map globular clusters and nearby galactic structure.Mira variableCompared with: RR Lyrae stars are much hotter and have far shorter periods than Mira variables.Horizontal branchBroader topic: These variables are common among the hotter, instability-strip members of the branch.Small Magellanic CloudRelated: Its RR Lyrae stars trace the galaxy's older populations and help measure its distance.Period–luminosity relationCompared with: Its shorter periods and different luminosity calibration distinguish it from classical Cepheids.Stellar pulsationBroader topic: Its nearly standard luminosity helps measure distances within the Milky Way and nearby galaxies.Magellanic CloudsRelated: RR Lyrae stars in the Clouds help calibrate their distances.Tip of the red giant branchCompared with: RR Lyrae stars measure distances in old populations but are fainter than the red giant tip.Classical Cepheid variableCompared with: RR Lyrae stars are typically less luminous and shorter-period than classical Cepheids.Instability stripBroader topic: RR Lyrae stars occupy the strip at lower luminosities than classical Cepheids.Kappa mechanismBroader topic: Its radial pulsations are driven primarily by opacity changes in partially ionized helium.Type II CepheidCompared with: RR Lyrae stars share old populations but are generally less luminous and have shorter periods.Messier 13Broader topic: RR Lyrae stars in the cluster provide a distance check independent of its apparent size.Messier 15Broader topic: RR Lyrae stars in Messier 15 help calibrate its distance.
KnowraRR Lyrae variableLinked fromLinked fromThe 16 pages that link to RR Lyrae variable, each with the reason it gives.All 16Broader topic 8Related 2Compared with 6Cepheid variableCompared with: RR Lyrae stars are older and fainter than classical Cepheids, making them useful for different stellar populations.Standard candleBroader topic: Its calibrated brightness helps measure distances within the Milky Way and nearby galaxies.Variable starBroader topic: Its predictable luminosity helps map globular clusters and nearby galactic structure.Mira variableCompared with: RR Lyrae stars are much hotter and have far shorter periods than Mira variables.Horizontal branchBroader topic: These variables are common among the hotter, instability-strip members of the branch.Small Magellanic CloudRelated: Its RR Lyrae stars trace the galaxy's older populations and help measure its distance.Period–luminosity relationCompared with: Its shorter periods and different luminosity calibration distinguish it from classical Cepheids.Stellar pulsationBroader topic: Its nearly standard luminosity helps measure distances within the Milky Way and nearby galaxies.Magellanic CloudsRelated: RR Lyrae stars in the Clouds help calibrate their distances.Tip of the red giant branchCompared with: RR Lyrae stars measure distances in old populations but are fainter than the red giant tip.Classical Cepheid variableCompared with: RR Lyrae stars are typically less luminous and shorter-period than classical Cepheids.Instability stripBroader topic: RR Lyrae stars occupy the strip at lower luminosities than classical Cepheids.Kappa mechanismBroader topic: Its radial pulsations are driven primarily by opacity changes in partially ionized helium.Type II CepheidCompared with: RR Lyrae stars share old populations but are generally less luminous and have shorter periods.Messier 13Broader topic: RR Lyrae stars in the cluster provide a distance check independent of its apparent size.Messier 15Broader topic: RR Lyrae stars in Messier 15 help calibrate its distance.