An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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P Cygni profile
  فراپال ِ P Cygni  
farâpâl-e P Cygni
Fr.: profil P Cygni  

A feature in a stellar spectrum showing strong hydrogen and helium emission lines with absorption lines on their blueward wing. This line profile indicates a strong outflow of matter from a star. → inverse P Cygni line profile.

See also: After → P Cygni star.