Distribution of Hcn in Titan's Upper Atmosphere from Cassini/Vims Observations At 3 Microns

A. Adriani , B.M. Dinelli , M. López-Puertas (1) , M. García-Comas (1) , M.L. Moriconi , E. d'Aversa , B. Funke (1) , A. Coradini

1 IAA - Instituto de Astrofísica de Andalucía

► We present the first concentration retrieval of HCN by Cassini-VIMS limb observations of the Titan upper atmosphere in the altitude range 600-1100 km ► HCN is thought to play an important role in the chemistry and in determining the thermal structure of Titan's thermosphere ► A model for non-LTE HCN emission in Titan atmospheric condition has been developed for the purpose.

Mots clés: Atmospheres; composition; Infrared observations; Radiative transfer; Titan

Domaines: Planète et Univers [physics]

A. Adriani, B.M. Dinelli, M. López-Puertas, M. García-Comas, M.L. Moriconi, et al.. Distribution of Hcn in Titan's Upper Atmosphere from Cassini/Vims Observations At 3 Microns. Icarus, 2011, 214 (2), pp.584. ⟨10.1016/j.icarus.2011.04.016⟩. ⟨hal-00786872⟩