{ "format" : "linked-data-api", "version" : "0.2", "result" : {"_about" : "http://vocabs.ardc.edu.au/repository/api/lda/aas/the-unified-astronomy-thesaurus/5-0-0/resource.text?uri=http%3A%2F%2Fastrothesaurus.org%2Fuat%2F2105", "definition" : "http://vocabs.ardc.edu.au/repository/api/lda/aas/the-unified-astronomy-thesaurus/5-0-0/resource.text?uri=http%3A%2F%2Fastrothesaurus.org%2Fuat%2F2105", "extendedMetadataVersion" : "http://vocabs.ardc.edu.au/repository/api/lda/aas/the-unified-astronomy-thesaurus/5-0-0/resource.text?_metadata=all&uri=http%3A%2F%2Fastrothesaurus.org%2Fuat%2F2105", "primaryTopic" : {"_about" : "http://astrothesaurus.org/uat/2105", "altLabel" : [{"_value" : "Carbon enhanced metal poor stars", "_lang" : "en"} ], "broader" : [{"_about" : "http://astrothesaurus.org/uat/226", "narrower" : ["http://astrothesaurus.org/uat/2105"]} ], "contributor" : "http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie", "creator" : "http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie_Admin", "dctermsCreated" : "Mon, 17 Sep 2018 18:11:30 GMT+0000", "dctermsModified" : "Mon, 26 Oct 2020 19:34:27 GMT+0000", "definition" : "A star that presents very low iron abundances [Fe/H] < -4 but an anomalous richness in carbon. CEMP stars have been defined as a subset of metal-poor stars that exhibit elevated [C/Fe] ≥ +1.0. It has been recognized that ~15-20% of stars with [Fe/H] < -2.0 are carbon enhanced. This fraction rises to 30% for [Fe/H] < -3.0, to 40% for [Fe/H] < -3.5, and ~75% for [Fe/H] < -4.0. This increasing trend of CEMP-star frequency with declining [Fe/H] is confirmed by the observation of many thousands of CEMP stars.", "prefLabel" : {"_value" : "CEMP stars", "_lang" : "en"} , "type" : ["http://www.w3.org/2000/01/rdf-schema#Resource", "http://www.w3.org/2004/02/skos/core#Concept"]} , "type" : ["http://purl.org/linked-data/api/vocab#ItemEndpoint", "http://purl.org/linked-data/api/vocab#Page"]} }