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I Star spectra and star color relation

  1. Dec 28, 2017 #1
    I'm reading about star spectra, color, and temperature and have a question...

    I understand that very hot stars burn blue because a lot of the radiation is on the UV end so it appears more blue when its ran through several color filters. and the opposite applies for cool stars that are skewed towards IR. but does the stars spectra have anything to do with its color or does color mostly come from temperature?

  2. jcsd
  3. Dec 28, 2017 #2


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    The spectrum of a star is primarily a function of the temperature of its surface, with individual emission and absorption lines being secondary and only barely contributing to its color. Unfiltered light from a very hot star appears bluish because the intensity of the visible light at the blue and purple end of the spectrum is higher than that of the orange and red end, which is the result of its very high surface temperature.
  4. Dec 28, 2017 #3


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    The word spectra is the plural form of spectrum, which is commonly defined as 'The spectrum is the range of different colors which is produced when light passes through a glass prism or through a drop of water.' So it is safe to conclude the terms temperature and color are ambiguous in science.
  5. Dec 28, 2017 #4
    Ah ok. Awesome. Thanks!
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