A spectrum of an extrasolar planet

@article{Richardson2007ASO,
  title={A spectrum of an extrasolar planet},
  author={Lee Jeremy Richardson and Drake L. Deming and Karen Horning and Sara Seager and Joseph Harrington},
  journal={Nature},
  year={2007},
  volume={445},
  pages={892-895}
}
Of the over 200 known extrasolar planets, 14 exhibit transits in front of their parent stars as seen from Earth. Spectroscopic observations of the transiting planets can probe the physical conditions of their atmospheres. One such technique can be used to derive the planetary spectrum by subtracting the stellar spectrum measured during eclipse (planet hidden behind star) from the combined-light spectrum measured outside eclipse (star + planet). Although several attempts have been made from… 
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