Given the spectral type of a certain star (the sun, Sirius, Aldebaran, Polaris, Rigel), the student is asked to determine what type would be slightly cooler/hotter (temperature) than the given star.
keywords: spectral type, temperature, sun, Sirius, Aldebaran, Polaris, Rigel
swf file: ca_stellarprops2_stypetemps.swf