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astronomical technique > spectrometry > equivalent width

Terme préférentiel

equivalent width  

Définition(s)

  • The equivalent width of a spectral line is a measure of the area of the line on a plot of intensity versus wavelength in relation to underlying continuum level. It is found by forming a rectangle with a height equal to that of continuum emission, and finding the width such that the area of the rectangle is equal to the area in the spectral line. It is a measure of the strength of spectral features that is primarily used in astronomy. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Equivalent_width)

Concept(s) générique(s)

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http://data.loterre.fr/ark:/67375/MDL-BCCNLWNX-C

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RDF/XML TURTLE JSON-LD Dernière modif. 24/04/2023