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RR Lyrae variable

RR Lyrae variables are periodic variable stars, commonly found in globular clusters and other old stellar populations in galaxies. They are used as standard candles to measure (extra) galactic distances, assisting with the cosmic distance ladder. This class is named after the prototype and brightest example, RR Lyrae.

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Distribution

Properties

Period-luminosity relationships

Recent developments

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RR Lyrae variable

Nodes57
Edges56
Triples59
Avg. degree1.96
Density0.035088
Components1

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RR Lyrae variable

Top relations

related to Properties · 15
RR Lyrae variable → BL Herculis, Blazhko, Cepheid, Cepheids, Classical Cepheid, II Cepheids, Like, Population II, RR Lyrae, RR Lyraes, Some RRab, Sun, The, Their, Virginis
related to External links · 12
RR Lyrae variable → APOD M3, Inconstant Star Cluster, M15 Archived, M15RR Lyrae, M3Animation, RR Lyrae, RR Lyrae-Variables, RR LyraeOGLE Atlas, Season, Variable Star, Variable Star Light Curves, Wayback MachineAnimation
related to Discovery and recognition · 11
RR Lyrae variable → Cepheids, From, In, Kapteyn, Leporis, Pickering, Population II, Probably, RR Lyrae, The, Williamina Fleming
related to Period-luminosity relationships · 10
RR Lyrae variable → Consequently, Hubble, In, RR Lyrae, The, They, Thus, Universe, Unlike Cepheid, Wesenheit
related to Recent developments · 5
RR Lyrae variable → Andromeda Galaxy, Kepler, RR Lyrae, The Hubble Space Telescope, The Kepler

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Important terminology

rr lyrae stars variables globular clusters star used way lyraes found distance milky mass period-luminosity cluster cepheids cepheid common survey

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
period-doubling have been detected.The Gaia mission mapped 140instance ofand new phenomena0.80text
784 RR Lyrae starsinstance ofand new phenomena0.80text
of which 50instance ofand new phenomena0.80text
220 were not previously known to be variableinstance ofand new phenomena0.80text
and for which 54instance ofand new phenomena0.80text
272 interstellar absorption estimates are available.The PanSTARRS1 3π survey identifiedinstance ofand new phenomena0.80text
RR Lyrae variablerelated to Discovery and recognitionIn0.60section
RR Lyrae variablerelated to Discovery and recognitionPickering0.60section
RR Lyrae variablerelated to Discovery and recognitionProbably0.60section
RR Lyrae variablerelated to Discovery and recognitionRR Lyrae0.60section
RR Lyrae variablerelated to Discovery and recognitionLeporis0.60section
RR Lyrae variablerelated to Discovery and recognitionKapteyn0.60section

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