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ESA Data Ontology

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... > Stellar astronomy > Stellar types > Emission line stars > Early-type emission stars > Wolf-Rayet stars > WN stars
... > Stellar astronomy > Stellar types > Early-type stars > Early-type emission stars > Wolf-Rayet stars > WN stars

Preferred term

WN stars  

Definition

  • A Wolf-Rayet star whose spectrum is dominated by emission lines of ionized nitrogen: N II 3995 Å, N III 4634-4661 Å, N III 5314 Å, N IV 3479-3484 Å, N IV 4058 Å, N V 4603 Å, N V 4619 Å, and N V 4933-4944 Å. This type is divided in sub-types WN2 to WN11. (en)

Broader concept

Entry terms

  • WN-type stars (en)

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/1805

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