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color-magnitude diagram

(CMD)
(diagram relating color to luminosity)

A color-magnitude diagram (CMD) is a diagram analogous to an H-R diagram, but plotting color against absolute magnitude (luminosity). It is often used for galaxies and groups of stars such as globular clusters.


(stars,galaxies,astrophysics,wavelength,luminosity,diagram,color,magnitude)
http://en.wikipedia.org/wiki/Galaxy_color-magnitude_diagram
http://coolwiki.ipac.caltech.edu/index.php/Color-Magnitude_and_Color-Color_plots

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