Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomical relation
|
| gptkbp:alsoKnownAs |
gptkb:Leavitt_Law
|
| gptkbp:appliesTo |
gptkb:Cepheid_variable_stars
gptkb:RR_Lyrae_stars |
| gptkbp:basisFor |
gptkb:cosmic_distance_ladder
|
| gptkbp:calibratedBy |
parallax measurements
|
| gptkbp:category |
gptkb:astronomy
astrophysics |
| gptkbp:describes |
relationship between pulsation period and luminosity of Cepheid variable stars
|
| gptkbp:discoveredBy |
gptkb:Henrietta_Swan_Leavitt
|
| gptkbp:discoveredIn |
1908
|
| gptkbp:enables |
determination of distance to galaxies
|
| gptkbp:form |
logarithmic relationship
|
| gptkbp:helpedDiscover |
expansion of the universe
|
| https://www.w3.org/2000/01/rdf-schema#label |
Period-Luminosity Relation
|
| gptkbp:importantFor |
key to establishing scale of the universe
|
| gptkbp:publishedIn |
Harvard College Observatory Circular
|
| gptkbp:relatedTo |
standard candle
|
| gptkbp:usedBy |
gptkb:Edwin_Hubble
|
| gptkbp:usedFor |
measuring cosmic distances
|
| gptkbp:bfsParent |
gptkb:Leavitt_Law
|
| gptkbp:bfsLayer |
6
|