DPS Meeting, Madison, October 1998
Session 32P. Jupiter II
Contributed Poster Session, Wednesday, October 14, 1998, 5:10-6:10pm, Hall of Ideas

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[32P.15] Calculations of D-Lyman-\alpha airglow in the thermosphere of Jupiter

C. D. Parkinson, E. Griffioen, J. C. McConnell (York University, Toronto, Ontario), L. Ben-Jaffel (Institut d'Astrophysique de Paris, Paris, France), G. R. Gladstone (Southwest Research Institute, San Antonio, TX 78238)

Recently {\it in-situ} D/H measurements have been made by the Galileo probe mass spectrometer (GPMS) in Jupiter's atmosphere [Neimann et al., 1996]. An earlier tentative detection of the deuterium Lyman-\alpha line emission was made on the dawn limb of Jupiter using the Goddard High Resolution Spectrometer on board the Hubble Space Telescope (HST) on the 5th July, 1993 [Ben-Jaffel et al., 1994]. We estimate the problem of the abundance and airglow intensities of D in the thermosphere making using of photochemical and radiative transfer models that allow for the coupling of the H and D lines. We assume that the mixing ratio of D to H2 in the deep atmosphere is given by that determined by the GPMS instrument and that the D line is excited by both solar and planetary H Lyman-\alpha. We present results showing the effect of eddy diffusion, and the temperature profile on the D abundance and on the expected D emission which is of order of several hundred Rayleighs.

The author(s) of this abstract have provided an email address for comments about the abstract: chris@nimbus.yorku.ca

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