CN+Milestone+Map+-+Spectral+Classes


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=**Explain the different spectral classes of variable stars.**=

Spectral classification is "the classification of stars according to their spectra; each major spectral classification is given a letter, with additional numbers providing further subdivisions." ([|eSky])

The standard spectral class classification scheme is based on temperature. Most stars fit into one of the following types or spectral classes:
 * O, B, A, F, G, K, M





http://www.glyphweb.com/esky/default.htm?http://www.glyphweb.com/esky/concepts/spectralclassification.html http://hyperphysics.phy-astr.gsu.edu/hbase/starlog/staspe.html
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