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<-   The spectrum of a planet   ->
Spectrum of a planet
images/cnplaext.png
Copyright : Paris Observatory / ASM

The spectrum of a planet has two bumps :

  • One bump is the reflected light of the star, that's the visible part for which the maximum is given by the temperature of the star.
  • The second bump is the proper emission of the planet. This component is in the infrared, because the planet is "cold" (a few hundred Kelvins).