Strong infrared emission from the extrasolar planet HD 189733b

  title={Strong infrared emission from the extrasolar planet HD 189733b},
  author={Drake L. Deming and Joseph Harrington and Sara Seager and Lee Jeremy Richardson},
  journal={The Astrophysical Journal},
We report detection of strong infrared thermal emission from the nearby (d = 19 pc) transiting extrasolar planet HD 189733b by measuring the flux decrement during its prominent secondary eclipse. A 6 hr photometric sequence using Spitzer's infrared spectrograph in peak-up imaging mode at 16 μm shows the secondary eclipse depth to be 0.551% ± 0.030%, with accuracy limited by instrumental baseline uncertainties, but with 32 σ precision (σ = 0.017%) on the detection. The 16 μm brightness… Expand

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