An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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break luminosity
  تابندگی ِ بره  
tâbandegi-ye boré
Fr.: luminosité de coupure  

A characteristic luminosity around which the → luminosity function of a sample of galaxies changes to a steeper slope or exponentially declines.

See also: → break; → luminosity.