The extrasolar planet atmosphere and exosphere: Emission and   transmission spectroscopy
  We have entered the phase of extrasolar planets characterization, probing their atmospheres for molecules, constraining their horizontal and vertical temperature profiles and estimating the contribution of clouds and hazes. We report here a short review of the current situation using ground based and space based observations, and present the transmission spectra of HD189733b in the spectral range 0.5-24 microns. 
Giovanna Tinetti (1,2) and Jean-Philippe Beaulieu (2,3) ((1)   University College London, Gower street, London WC1E 6BT, UK,...