High-Resolution 3 Micron Spectroscopy of Molecules in the Mesosphere and Troposphere of Titan

Details High-Resolution 3 Micron Spectroscopy of Molecules in the Mesosphere and Troposphere of Titan High-Resolution 3 Micron Spectroscopy of Molecules in the Mesosphere and Troposphere of Titan

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...583l..39g&link_type=abstract

The Astrophysical Journal, Volume 583, Issue 1, pp. L39-L42.

Astronomy and Astrophysics

Astronomy

17

Astrochemistry, Infrared: Solar System, Line: Identification, Molecular Processes, Planets And Satellites: Individual: Titan

Scientific paper

A high-resolution 2.9-3.5 μm spectrum of Titan has revealed a surprisingly strong emission band of hydrogen cyanide (HCN) and strong absorption bands of acetylene (C2H2) and monodeuterated methane (CH3D), in addition to methane (CH4) emission and absorption known from previous observations. Whereas the C2H2 and CH3D absorptions are largely in the troposphere, the HCN emission must occur at higher altitudes. However, the intensity of the HCN band is inconsistent with our current understanding of the upper atmosphere of Titan.

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