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DIAGRAMME COULEUR-MAGNITUDE [1 record]

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Record 1 2013-12-04

English

Subject field(s)
  • Computer Graphics
  • Remote Sensing
  • Astronomy
DEF

[A] graph showing the relation between the absolute magnitudes (brightnesses) of stars and their colours, which are closely related to their temperatures and spectral types.

French

Domaine(s)
  • Infographie
  • Télédétection
  • Astronomie
CONT

Les galaxies d’amas se placent sur une séquence dans un diagramme couleur-magnitude(la couleur étant définie comme la différence entre les magnitudes mesurées dans deux filtres différents), ce qui est un moyen de sélectionner les galaxies ayant une forte probabilité d’appartenir à l'amas même si l'on ne connaît pas leur décalage spectral.

Spanish

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