Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:photometric_system
|
| gptkbp:alsoKnownAs |
gptkb:Johnson_photometric_system
|
| gptkbp:bandB |
blue
|
| gptkbp:bandU |
ultraviolet
|
| gptkbp:bandV |
visual
|
| gptkbp:basisFor |
many modern photometric systems
|
| gptkbp:BcentralWavelength |
440 nm
|
| gptkbp:citation |
gptkb:Johnson_&_Morgan_(1953),_ApJ,_117,_313
|
| gptkbp:color |
gptkb:B-V
gptkb:U-B |
| gptkbp:frequency |
3
|
| gptkbp:introduced |
gptkb:Harold_Johnson
|
| gptkbp:introducedIn |
1953
|
| gptkbp:measures |
gptkb:color_index
apparent magnitude |
| gptkbp:standardStar |
gptkb:Vega
|
| gptkbp:UcentralWavelength |
365 nm
|
| gptkbp:usedFor |
measuring stellar magnitudes
|
| gptkbp:usedIn |
gptkb:astronomy
|
| gptkbp:VcentralWavelength |
550 nm
|
| gptkbp:bfsParent |
gptkb:V-band
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
UBV photometric system
|