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SPECTRAL TYPE [1 record]

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Record 1 2006-01-24

English

Subject field(s)
  • Astronomy
DEF

A classification of a star according to the characteristics of its spectrum.

French

Domaine(s)
  • Astronomie
CONT

En procédant empiriquement on a réussi à ranger les spectres de la grande majorité des étoiles sous la forme d'une séquence ou série qui matérialise l'atténuation progressive des raies de certains éléments chimiques alors que celles d'autres éléments se renforcent. Les spectres analogues sont catalogués suivant des "classes spectrales".

Spanish

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