@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://astrothesaurus.org/uat/1641>
  skos:editorialNote [ ] ;
  skos:altLabel "Four-color photometry"@en, "Stromgren photometry"@en, "Stromgren uvby system"@en, "Uvby system"@en, "Strömgren photometric system"@en, "uvbyβ photometric system"@en ;
  a skos:Concept ;
  skos:definition "A four-color stellar photometric system devised by B. Strömgren. It is based on measurements in the ultraviolet (3500 Å), violet (4100 Å), blue (4670 Å), and yellow (5470 Å) regions of the spectrum. The filters bandwidths are 340, 200, 160, and 240 Å respectively. Also known as Strömgren four-color photometry."@en ;
  skos:prefLabel "Strömgren photometry"@en ;
  dc:modified "2020-11-04T18:44:57.111Z"^^xsd:dateTime, "2020-11-04T18:45:12.883Z"^^xsd:dateTime ;
  dc:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
  skos:broader <http://astrothesaurus.org/uat/1021> .

<http://astrothesaurus.org/uat/1021>
  skos:prefLabel "Medium band photometry"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1641> .