Statements (32)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb: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
|
| 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:cosmic_distance_ladder |
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
RR Lyrae variables
|