Detection of an Extrasolar Planet Atmosphere

@article{Charbonneau2002DetectionOA,
  title={Detection of an Extrasolar Planet Atmosphere},
  author={D. Charbonneau and T. Brown and R. Noyes and R. Gilliland},
  journal={The Astrophysical Journal},
  year={2002},
  volume={568},
  pages={377-384}
}
  • D. Charbonneau, T. Brown, +1 author R. Gilliland
  • Published 2002
  • Physics
  • The Astrophysical Journal
  • We report high-precision spectrophotometric observations of four planetary transits of HD 209458, in the region of the sodium resonance doublet at 589.3 nm. We find that the photometric dimming during transit in a bandpass centered on the sodium feature is deeper by (2.32 ± 0.57) × 10-4 relative to simultaneous observations of the transit in adjacent bands. We interpret this additional dimming as absorption from sodium in the planetary atmosphere, as recently predicted from several theoretical… CONTINUE READING
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