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Spectral classification

The Morgan-Keenan spectral classification

In human astronomy, stellar classification was a classification of stars based on their spectral characteristics. The spectral class was the designated class of a star, describing the ionization of its chromosphere, what atomic excitations were most prominent in the light, giving an objective measure of the temperature in this chromosphere.

Spectral classes Edit

Class A Edit

Class F Edit

Class G Edit

Class G stars were the type of star that was most likely hospitable to Earth-type planets.

Class K Edit

Class M Edit

References Edit

External links Edit

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