@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/1811>
  skos:prefLabel "X-ray binary stars"@en ;
  a skos:Concept ;
  skos:narrower <http://astrothesaurus.org/uat/939> .

<http://astrothesaurus.org/uat/939>
  skos:editorialNote [ ] ;
  skos:altLabel "Low-mass X-ray binaries"@en, "LMXBs"@en, "LMXB"@en ;
  skos:definition "A member of one of the two main classes of X-ray binary systems where one of the components is a neutron star or black hole and the other component a low-mass star with a spectral type A or later. LMXBs mainly emit soft X-rays. The ratio of their optical to X-ray luminosities is less than 0.1. They belong to old stellar populations with ages 5-15 x 10^9 years and are found in globular clusters and in the bulge of our Milky Way galaxy; some are also found in the disk. Hercules X-1 is an example of LMXBs."@en ;
  dc:modified "2020-11-24T17:13:35.977Z"^^xsd:dateTime, "2020-11-03T16:47:05.813Z"^^xsd:dateTime ;
  dc:contributor <http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin> ;
  skos:broader <http://astrothesaurus.org/uat/1811> ;
  skos:prefLabel "Low-mass x-ray binary stars"@en ;
  skos:narrower <http://astrothesaurus.org/uat/777> ;
  a skos:Concept .

<http://astrothesaurus.org/uat/777>
  skos:prefLabel "Hz Herculis x-ray binary stars"@en ;
  a skos:Concept ;
  skos:broader <http://astrothesaurus.org/uat/939> .