|
gptkbp:instanceOf
|
variable star
|
|
gptkbp:apparentMagnitude
|
+0.75
|
|
gptkbp:commonIn
|
old stellar populations
|
|
gptkbp:discoveredBy
|
gptkb:Williamina_Fleming
1899
|
|
gptkbp:distance
|
standard candle
|
|
gptkbp:evolutionaryStage
|
horizontal branch
|
|
gptkbp:foundIn
|
gptkb:galaxy
globular clusters
|
|
gptkbp:galacticDistribution
|
spherical halo
|
|
gptkbp:heliumFusion
|
core
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
RR Lyrae variable stars
|
|
gptkbp:lightCurveShape
|
sawtooth
|
|
gptkbp:luminosity
|
gptkb:giant
|
|
gptkbp:mass
|
~0.6-0.8 solar masses
|
|
gptkbp:metallicity
|
low
|
|
gptkbp:namedAfter
|
gptkb:RR_Lyrae
|
|
gptkbp:period
|
0.2 to 1 day
|
|
gptkbp:periodLuminosityRelation
|
weak
|
|
gptkbp:spectralType
|
A
F
|
|
gptkbp:stellarPopulation
|
gptkb:Population_II
|
|
gptkbp:subspecies
|
gptkb:RRab
gptkb:RRc
gptkb:RRd
|
|
gptkbp:temperature
|
6,000–7,500 K
|
|
gptkbp:usedFor
|
distance measurement
|
|
gptkbp:variabilityCause
|
radial pulsation
|
|
gptkbp:variableType
|
pulsating variable
|
|
gptkbp:bfsParent
|
gptkb:IC_1613
gptkb:Messier_5
gptkb:Messier_53
gptkb:RR_Lyrae
|
|
gptkbp:bfsLayer
|
7
|