Statements (23)
Predicate | Object |
---|---|
gptkbp:instanceOf |
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
|
https://www.w3.org/2000/01/rdf-schema#label |
UBV photometric system
|
gptkbp:introduced |
gptkb:Harold_Johnson
|
gptkbp:introducedIn |
1953
|
gptkbp:measures |
apparent magnitude
color index |
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 |
5
|