Cepheid period-luminosity relation
GPTKB entity
Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomical relation
|
| gptkbp:alsoKnownAs |
gptkb:Leavitt_Law
|
| gptkbp:appliesTo |
gptkb:Cepheid_variable_stars
|
| gptkbp:category |
gptkb:cosmology
astrophysics |
| gptkbp:describes |
relationship between luminosity and pulsation period of Cepheid variable stars
|
| gptkbp:discoveredBy |
gptkb:Henrietta_Swan_Leavitt
|
| gptkbp:discoveredIn |
1908
|
| gptkbp:enables |
determination of absolute magnitude from period
distance estimation from observed period and apparent magnitude |
| gptkbp:form |
M = a log(P) + b
|
| gptkbp:historicalSignificance |
key to discovery of universe expansion
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cepheid period-luminosity relation
|
| gptkbp:relatedTo |
gptkb:RR_Lyrae_period-luminosity_relation
standard candle distance modulus |
| gptkbp:usedBy |
gptkb:Edwin_Hubble
|
| gptkbp:usedFor |
measuring cosmic distances
calibrating the cosmic distance ladder determining distance to galaxies |
| gptkbp:usedIn |
gptkb:Hubble's_Law
|
| gptkbp:bfsParent |
gptkb:Ejnar_Hertzsprung
|
| gptkbp:bfsLayer |
6
|