Evidence for methane escape and strong seasonal and dynamical perturbations of Neptune's atmospheric temperatures

  title={Evidence for methane escape and strong seasonal and dynamical perturbations of Neptune's atmospheric temperatures},
  author={G. Orton and T. Encrenaz and C. Leyrat and R. Puetter and A. Friedson},
  journal={Astronomy and Astrophysics},
  • G. Orton, T. Encrenaz, +2 authors A. Friedson
  • Published 2007
  • Physics
  • Astronomy and Astrophysics
  • Aims. We studied the distribution of mid-infrared thermal emission from Neptune to determine the spatial variability of temperatures and the distribution of trace constituents, allowing us to determine the relative strengths of radiation and dynamics in its atmosphere. Methods. Mid-infrared images of the planet were taken at the Very Large Telescope on 1–2 September 2006. Results. These images reveal strong inhomogeneities in thermal emission. 17.6 and 18.7-µm images exhibit strong seasonally… CONTINUE READING
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