Statements (22)
Predicate | Object |
---|---|
gptkbp:instanceOf |
photometric system
|
gptkbp:alsoKnownAs |
gptkb:UBV_system
|
gptkbp:B_filter |
blue
|
gptkbp:basisFor |
many modern photometric systems
|
gptkbp:colorIndices |
gptkb:B-V
gptkb:U-B |
gptkbp:commonIn |
gptkb:astronomy
|
gptkbp:countryOfOrigin |
gptkb:Yerkes_Observatory
|
gptkbp:developedBy |
gptkb:William_Wilson_Morgan
gptkb:Harold_Johnson |
gptkbp:enables |
color index measurement
|
gptkbp:focusArea |
gptkb:B_filter
gptkb:U_filter gptkb:V_filter |
https://www.w3.org/2000/01/rdf-schema#label |
Johnson-Morgan system
|
gptkbp:introducedIn |
1953
|
gptkbp:standardStars |
gptkb:Vega
|
gptkbp:U_filter |
ultraviolet
|
gptkbp:usedFor |
measuring stellar magnitudes
|
gptkbp:V_filter |
visual
|
gptkbp:bfsParent |
gptkb:Bessel_V
|
gptkbp:bfsLayer |
7
|