Detection of CO in Triton's atmosphere and the nature of surface-atmosphere interactions

  title={Detection of CO in Triton's atmosphere and the nature of surface-atmosphere interactions},
  author={Emmanuel Lellouch and Catherine de Bergh and Bruno Sicardy and St{\'e}phane Ferron and Hans Ulrich Kaufl},
  journal={Astronomy and Astrophysics},
Context. Triton possesses a thin atmosphere, primarily composed of nitrogen, sustained by the sublimation of surface ices. Aims. We aim at determining the composition of Triton’s atmosphere to constrain the nature of surface-atmosphere interactions. Methods. We perform high-resolution spectroscopic observations in the 2.32–2.37 μm range, using CRIRES at the VLT. Results. From this first spectroscopic detection of Triton’s atmosphere in the infrared, we report (i) the first observation of… 

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