@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ns0: <http://astrothesaurus.org/uat/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix ns1: <http://editor.vocabs.ands.org.au/user/> .
@prefix metadata_def: <http://data.bioontology.org/metadata/def/> .
<http://astrothesaurus.org/uat/1132>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1135>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1136>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1137>
metadata_def:mappingLoom "ostars" ;
metadata_def:mappingSameURI <http://astrothesaurus.org/uat/1137> ;
dct:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
dct:modified "2020-11-03T19:46:55.553Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>, "2020-11-03T19:47:07.379Z"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
a owl:NamedIndividual, skos:Concept ;
skos:altLabel "Class O stars"@en, "O-type stars"@en ;
skos:broader <http://astrothesaurus.org/uat/2051>, <http://astrothesaurus.org/uat/430> ;
skos:definition "A luminous, hot, blue star whose spectrum is dominated by the lines of hydrogen, atomic helium, and ionized helium; also known as O-type star. This is the earliest spectral type and the only main sequence star in which ionized helium is present. The effective temperatures of these stars range from about 30,000 K to 50,000 K, their luminosities from 50,000 to 1,000,000 times that of solar luminosity, and their masses from about 20 to 100 solar masses. The hottest O-type stars display high ionization emission features such as N III and He II, Of star. They are divided into subtypes O2, the hottest, to O9.7, the coldest. O-type stars are relatively rare, for each star of 100 solar masses there are 10^6 stars of solar mass. They are relatively short-lived since they spend only a few million years on the main sequence. The brightest O-type star in the sky visible with naked eye is Alnitak."@en ;
skos:narrower <http://astrothesaurus.org/uat/1132>, <http://astrothesaurus.org/uat/1135>, <http://astrothesaurus.org/uat/1136>, <http://astrothesaurus.org/uat/1138>, <http://astrothesaurus.org/uat/1139>, <http://astrothesaurus.org/uat/1153>, <http://astrothesaurus.org/uat/1154>, <http://astrothesaurus.org/uat/1155> ;
skos:prefLabel "O stars"@en ;
skos:related <http://astrothesaurus.org/uat/1589> .
<http://astrothesaurus.org/uat/1138>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1139>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1153>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1154>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1155>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1589>
skos:related <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/2051>
skos:narrower <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/430>
skos:narrower <http://astrothesaurus.org/uat/1137> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ns0: <http://astrothesaurus.org/uat/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix ns1: <http://editor.vocabs.ands.org.au/user/> .
@prefix metadata_def: <http://data.bioontology.org/metadata/def/> .
<http://astrothesaurus.org/uat/1132>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1135>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1136>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1137>
metadata_def:mappingLoom "ostars" ;
metadata_def:mappingSameURI <http://astrothesaurus.org/uat/1137> ;
dct:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
dct:modified "2020-11-03T19:46:55.553Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>, "2020-11-03T19:47:07.379Z"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
a owl:NamedIndividual, skos:Concept ;
skos:altLabel "Class O stars"@en, "O-type stars"@en ;
skos:broader <http://astrothesaurus.org/uat/2051>, <http://astrothesaurus.org/uat/430> ;
skos:definition "A luminous, hot, blue star whose spectrum is dominated by the lines of hydrogen, atomic helium, and ionized helium; also known as O-type star. This is the earliest spectral type and the only main sequence star in which ionized helium is present. The effective temperatures of these stars range from about 30,000 K to 50,000 K, their luminosities from 50,000 to 1,000,000 times that of solar luminosity, and their masses from about 20 to 100 solar masses. The hottest O-type stars display high ionization emission features such as N III and He II, Of star. They are divided into subtypes O2, the hottest, to O9.7, the coldest. O-type stars are relatively rare, for each star of 100 solar masses there are 10^6 stars of solar mass. They are relatively short-lived since they spend only a few million years on the main sequence. The brightest O-type star in the sky visible with naked eye is Alnitak."@en ;
skos:narrower <http://astrothesaurus.org/uat/1132>, <http://astrothesaurus.org/uat/1135>, <http://astrothesaurus.org/uat/1136>, <http://astrothesaurus.org/uat/1138>, <http://astrothesaurus.org/uat/1139>, <http://astrothesaurus.org/uat/1153>, <http://astrothesaurus.org/uat/1154>, <http://astrothesaurus.org/uat/1155> ;
skos:prefLabel "O stars"@en ;
skos:related <http://astrothesaurus.org/uat/1589> .
<http://astrothesaurus.org/uat/1138>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1139>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1153>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1154>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1155>
skos:broader <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/1589>
skos:related <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/2051>
skos:narrower <http://astrothesaurus.org/uat/1137> .
<http://astrothesaurus.org/uat/430>
skos:narrower <http://astrothesaurus.org/uat/1137> .