Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...333l..43e&link_type=abstract
Astronomy and Astrophysics, v.333, p.L43-L46 (1998)
Astronomy and Astrophysics
Astrophysics
21
Planets And Satellites, Uranus, Infrared: Solar System
Scientific paper
The infrared spectrum of Uranus has been recorded between 7 and 16.5mu m with the grating mode of the Short-Wavelength Spectrometer of ISO, with a resolving power of 1500. The 6-12mu m spectrum of Uranus has also been recorded at lower resolution (R=90) by the PHOT instrument in spectroscopic mode. The spectra show no signatures other than the C_2H_2 band centered at 13.7mu m. From the absence of emission in the region of the CH_4 7.7mu m band, and by fitting the C_2H_2 data on the basis of a photochemical model, the eddy diffusion coefficient is retrieved (in the range 5 10(3) -10(4) cm(2) s(-1) at the homopause). This result is consistent with the values previously derived from the Voyager UV occultation experiments.
Atreya Sushil K.
Bezard Bruno
Bishop James
Degraauw Th.
Edgington S.
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