A reanalysis of Voyager UVS observations of Titan

Details A reanalysis of Voyager UVS observations of Titan A reanalysis of Voyager UVS observations of Titan

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.338...67h&link_type=abstract

In ESA, Symposium on Titan p 67-74 (SEE N92-32348 23-91)

Computer Science

2

Atmospheric Composition, Data Reduction, Satellite Atmospheres, Spectrum Analysis, Titan, Ultraviolet Spectrometers, Voyager Project, Airglow, Emission Spectra, Line Spectra

Scientific paper

Data from the Voyager 1 Ultraviolet Spectrometer (UVS) encounter at Titan were reanalyzed to reveal new spatial and spectral information. The observations, data reduction and spectrum analysis are discussed. The following conclusions were drawn: Titan's airglow is driven by a combination of mechanisms including both EUV deposition and magnetospheric particle precipitation; the emissions are distributed throughout a range of altitudes in the atmosphere; enhanced nightside emissions of the Helium 58.4 nm line may be the result of a thermospheric diurnal temperature variation; the CD2 spectrum, with enhanced Ly(alpha) and N-2 64.5 and 67.0 nm emission, implies that some of the high altitude excitation is due to impact dissociative excitation of N2 by electrons with E greater than 150 eV; the CD2 spectrum is consistent with the existence of a high altitude bright spot in the dayside disk with dimensions from 400 to 900 km.

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