@prefix mdl: <http://data.loterre.fr/ark:/67375/MDL> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

mdl:-LR26WLQ3-5
  skos:hiddenLabel "diagrammes HR"@fr, "Diagramme HR"@fr, "diagrammes de Hertzsprung-Russell"@fr, "diagrammes de Hertzsprung Russell"@fr, "diagramme de Hertzsprung Russell"@fr ;
  skos:prefLabel "diagramme HR"@fr, "Hertzsprung-Russel diagram"@en ;
  skos:related mdl:-WZ83JF4Q-3, mdl:-W3GGB22B-K, mdl:-KGLNJX2H-P, mdl:-RPSH7VGM-8, mdl:-WRFHB6ZP-Z, mdl:-BDJNG533-7 ;
  skos:definition "The Hertzsprung-Russell diagram is a graph of stellar color, temperature, or spectral type against stellar luminosity or absolute magnitude. It was first plotted by Henry Norris Russell in 1913, but was discussed independently by Ejnar Hertzsprung at about the same time. The Hertzsprung-Russell diagram is dominated by the main sequence (so named by Arthur Eddington), which forms a curved, diagonal band from bright blue stars to faint red ones, and contains stars in their core hydrogen-burning stage, and the giant branch, occupied by red giants. Other conspicuous regions are represented by the supergiants (above the giant branch) and the white dwarfs (below the main sequence). The HR diagram can be seen as both a snapshot of the state of a large collection of stars, or a generalization of the evolutionary pathways of individual stars.  (Encyclopedia of Science, by David Darling, <a href=\"https://www.daviddarling.info/encyclopedia/H/HRdiag.html\" target=\"_blank\">https://www.daviddarling.info/encyclopedia/H/HRdiag.html</a>)"@en, "En astronomie, le diagramme de Hertzsprung-Russell, en abrégé diagramme H-R, est un graphique dans lequel est indiquée la luminosité d'un ensemble d'étoiles en fonction de leur température effective. Ce type de diagramme a permis d'étudier les populations d'étoiles et d'établir la théorie de l'évolution stellaire. (Wikipedia, L'Encylopédie Libre, <a href=\"https://fr.wikipedia.org/wiki/Diagramme_de_Hertzsprung-Russell\" target=\"_blank\">https://fr.wikipedia.org/wiki/Diagramme_de_Hertzsprung-Russell</a>)"@fr ;
  skos:altLabel "HR diagram"@en, "diagramme de Hertzsprung-Russell"@fr, "Hertzsprung Russel diagram"@en ;
  a skos:Concept ;
  skos:exactMatch <https://www.daviddarling.info/encyclopedia/H/HRdiag.html>, <https://fr.wikipedia.org/wiki/Diagramme_de_Hertzsprung-Russell>, <http://astrothesaurus.org/uat/725> ;
  skos:narrower mdl:-KLPJ2LL5-G, mdl:-CFWB4C0D-B ;
  skos:inScheme mdl: ;
  skos:broader mdl:-NGLWSPST-G .

mdl:-RPSH7VGM-8
  skos:prefLabel "stellar spectrum"@en, "spectre stellaire"@fr ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .

mdl:-BDJNG533-7
  skos:prefLabel "étoile de la branche horizontale"@fr, "horizontal branch star"@en ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .

mdl:-NGLWSPST-G
  skos:prefLabel "évolution stellaire"@fr, "stellar evolution"@en ;
  a skos:Concept ;
  skos:narrower mdl:-LR26WLQ3-5 .

mdl:-KGLNJX2H-P
  skos:prefLabel "asymptotic giant branch"@en, "branche asymptotique des géantes"@fr ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .

mdl:-W3GGB22B-K
  skos:prefLabel "color-color diagram"@en, "diagramme couleur-couleur"@fr ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .

mdl:-WZ83JF4Q-3
  skos:prefLabel "spectral type"@en, "type spectral"@fr ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .

mdl:-KLPJ2LL5-G
  skos:prefLabel "bande d'instabilité"@fr, "instability strip"@en ;
  a skos:Concept ;
  skos:broader mdl:-LR26WLQ3-5 .

mdl:-CFWB4C0D-B
  skos:prefLabel "color-magnitude diagram"@en, "diagramme magnitude-couleur"@fr ;
  a skos:Concept ;
  skos:broader mdl:-LR26WLQ3-5 .

mdl: a skos:ConceptScheme .
mdl:-WRFHB6ZP-Z
  skos:prefLabel "red-giant branch"@en, "branche des géantes rouges"@fr ;
  a skos:Concept ;
  skos:related mdl:-LR26WLQ3-5 .