An Etymological Dictionary of Astronomy and Astrophysics

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extinction curve
  خم ِ خاموشی  
xam-e xâmuši
Fr.: courbe de l'extinction interstellaire  

A graph representing the variation of the → interstellar extinction against → wavelength. Usually it displays the → normalized values of extinction as a function of (the → inverse) of the wavelength (in → microns). See, e.g., Sandage & Mathis, 1979, Ann. Rev. Astron. Astrophys. 17, 73.

See also: → extinction; → curve.