Other
Scientific paper
Jul 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997dps....29.3303c&link_type=abstract
American Astronomical Society, DPS meeting #29, #33.03; Bulletin of the American Astronomical Society, Vol. 29, p.1037
Other
Scientific paper
The European satellite ISO (Infrared Space Observatory), launched in November 1995, is dedicated to the infrared observation of the sky by imaging, photometry and spectroscopy. Two spectrographs cover the 2.3-197 mu m range with a resolving power ranging from 200 to 2000 (grating mode) and the 11.4 - 180 mu m range with R = 10000-30000 (Fabry-Perot mode). Observations of Titan were obtained in January 1997 with the SWS/Grating. The spectral resolution is about 5-10 times better than the IRIS-Voyager spectra, and the sensitivity is better than 1 Jy in the 7-16 micron range. Synthetic calculations to model the spectrum at the ISO resolution have been made by Coustenis et al. (Icarus 102, 240, 1993) and show a good agreement with the data. In the thermal range (above 7 mu m) observed by ISO, emission features include all the hydrocarbons and nitriles previously detected by the Voyager/IRIS spectrometer. With the ISO/SWS resolution we have obtained new precise measurements of the abundances of these trace constituents on a disk average and have investigated the presence of other possible candidate molecules such as H_2O, C_3H_4 (allene) and C_6H_6 (benzene). These remain undetected as yet, but we have set upper limits to their abundances (e.g. ~ 10(-9) for a constant-with-height water stratospheric abundance). A more accurate determination of the temperature profile will be obtained by analysing the nu_ {4} methane band at 7.7 mu m. New ISO/LWS/Grating and ISO/SWS/Fabry-Perot observations of Titan are expected in June 1997.
Coustenis Athena
de Graauw Th.
Encrenaz Th.
Gautier Daniel
Griffin Matt J.
No associations
LandOfFree
Titan Observations with ISO does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Titan Observations with ISO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Titan Observations with ISO will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1189965