See this site, from the University of Illinois, for a broad overview of the spectra of stars and other astronomical objects. You can find out about many related subjects, including the electromagnetic spectrum, absorption and emission lines, spectral characteristics, and the classification of stars. The site also includes images and many links that provide more information.
%0 Electronic Source %A Kaler, James %D 1998 %T Spectra %V 2014 %N 16 April 2014 %9 text/html %U http://stars.astro.illinois.edu/sow/spectra.html
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