If you are interested in learning more about measuring stellar properties, I recommend:
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Links
[1] http://www.acs.psu.edu/drussell/Demos/doppler/doppler.html
[2] http://phet.colorado.edu/simulations/sims.php?sim=Blackbody_Spectrum
[3] https://pumas.gsfc.nasa.gov/examples/index.php?id=96
[4] http://stars.astro.illinois.edu/sow/sowlist.html
[5] http://cas.sdss.org/dr6/en/proj/basic/color/
[6] http://cas.sdss.org/dr6/en/proj/advanced/color/
[7] http://cas.sdss.org/dr6/en/proj/basic/spectraltypes/
[8] http://cas.sdss.org/dr6/en/proj/advanced/spectraltypes/