An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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WN9 star
  ستاره‌ی ِ WN9  
setâre-ye WN9
Fr.: étoile WN9  

A → WN Wolf-Rayet star whose spectrum shows the following emission line characteristics: N III 4634-4641, 5314 Å stronger than N II 3995 Å, N IV 3479-3484, 4058 Å absent, He I with → P Cygni profile.

See also: W, from → Wolf-Rayet; N, from → nitrogen; → star.