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

<http://astrothesaurus.org/uat/1828>
  dc:modified "2020-11-04T20:56:37.894Z"^^xsd:dateTime, "2020-11-04T20:56:59.421Z"^^xsd:dateTime ;
  skos:broader <http://astrothesaurus.org/uat/774> ;
  skos:altLabel "Rho cas stars"@en, "Rho Cassiopeiae"@en ;
  dc:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
  skos:editorialNote [ ] ;
  a skos:Concept ;
  skos:prefLabel "Yellow hypergiant stars"@en ;
  skos:definition "An evolved, very massive star of spectral type F or G with a very high luminosity (~10^5 times solar) lying near the empirical upper luminosity boundary in the H-R diagram (Humphreys-Davidson limit). Yellow hypergiants have high mass loss rates (10^-5 - 10^-3 solar masses per year) and are in a short, transitional evolutionary stage. Their evolutionary state is thought to correspond to post-red supergiants rapidly evolving in blueward loops in the H-R diagram. In their post-RSG blueward evolution these stars enter a temperature range (6000-9000 K), called yellow void, with increased dynamical instability. Their link to other advanced evolutionary phases of massive stars such as Luminous Blue Variables and Wolf-Rayet stars is still an open issue in stellar evolution theory. The most famous yellow hypergiant is Rho Cassiopeiae."@en .

<http://astrothesaurus.org/uat/774>
  skos:prefLabel "Hypergiant stars"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/1828> .