|
gptkbp:instanceOf
|
variable star
|
|
gptkbp:commonIn
|
old stellar populations
|
|
gptkbp:discoveredBy
|
gptkb:Sergey_Blazhko
1899
|
|
gptkbp:distance
|
standard candle
|
|
gptkbp:evolutionaryStage
|
horizontal branch
|
|
gptkbp:foundIn
|
gptkb:galaxy
globular clusters
|
|
gptkbp:galacticDistribution
|
spheroidal
|
|
gptkbp:heliumFusion
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
RR Lyrae variables
|
|
gptkbp:lightCurveShape
|
sawtooth
|
|
gptkbp:luminosity
|
~40-50 solar luminosities
|
|
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
|
yes
|
|
gptkbp:pulsationMode
|
radial
|
|
gptkbp:spectralType
|
A
F
|
|
gptkbp:stellarPopulation
|
gptkb:Population_II
|
|
gptkbp:subspecies
|
gptkb:RRab
gptkb:RRc
gptkb:RRd
|
|
gptkbp:temperature
|
6000-7600 K
|
|
gptkbp:typicalAmplitude
|
0.3 to 2 magnitudes
|
|
gptkbp:usedFor
|
distance measurement
|
|
gptkbp:variableType
|
pulsating variable
|
|
gptkbp:bfsParent
|
gptkb:M15
gptkb:Gaia_variable_star_catalogue
gptkb:cosmic_distance_ladder
|
|
gptkbp:bfsLayer
|
6
|