@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/1805>
  skos:prefLabel "WN stars"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/1806> .

<http://astrothesaurus.org/uat/1794>
  skos:prefLabel "WCN stars"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/1806> .

<http://astrothesaurus.org/uat/1589>
  skos:prefLabel "Stellar classification"@en ;
  a skos:Concept ;
  skos:related <http://astrothesaurus.org/uat/1806> .

<http://astrothesaurus.org/uat/1806>
  skos:broader <http://astrothesaurus.org/uat/428> ;
  skos:narrower <http://astrothesaurus.org/uat/1805>, <http://astrothesaurus.org/uat/1794>, <http://astrothesaurus.org/uat/1793> ;
  skos:editorialNote [ ] ;
  skos:definition "A type of very luminous, very hot (as high as 50,000 K) stars whose spectrum is characterized by broad emission lines (mainly He I and He II), which are presumed to originate from material ejected from the star at very high (~ 2000 km s^-1) velocities. The most massive O stars (M > 25 solar masses for solar metallicity) become W-R stars around 2 and 3 million years after their birth, spending only some few hundreds of thousands of years (≤ 10^6 years) in this phase until they explode as type Ib and type Ic supernovae. The minimum stellar mass that an O star needs to reach the W-R phase and its duration is dependent on metallicity."@en ;
  a skos:Concept ;
  dc:modified "2020-11-04T21:07:25.897Z"^^xsd:dateTime, "2020-11-24T16:44:29.445Z"^^xsd:dateTime ;
  dc:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
  skos:prefLabel "Wolf-Rayet stars"@en ;
  skos:related <http://astrothesaurus.org/uat/1589> ;
  skos:altLabel "Wolf Rayet stars"@en, "WR stars"@en .

<http://astrothesaurus.org/uat/428>
  skos:prefLabel "Early-type emission stars"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1806> .

<http://astrothesaurus.org/uat/1793>
  skos:prefLabel "WC stars"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/1806> .