Spectral images of Jupiter's stratosphere, its temperature field and major coolants.

Details Spectral images of Jupiter's stratosphere, its temperature field and major coolants. Spectral images of Jupiter's stratosphere, its temperature field and major coolants.

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dps....33.1125g&link_type=abstract

American Astronomical Society, DPS Meeting #33, #11.25; Bulletin of the American Astronomical Society, Vol. 33, p.1044

Astronomy and Astrophysics

Astronomy

Scientific paper

We observed Jupiter from NASA's Infrared Telescope Facility using the new high-resolution spectrograph, TEXES, to measure the stratospheric temperature field and dominant coolants distributions. We recorded CH4 emission lines to determine information on Jupiter's stratospheric temperatures at .1-20 mbars. Our spatially coincident observations of C2H2 and C2H6 emissions measure the radiative cooling with in the same pressure range. Hydrogen cyanide, introduced to the stratosphere by comet Shoemaker-Levy 9, also seen in emission provides information on the stratospheric wind fields. Our spectra were recorded at a resolving power of R=80,000-100,000, at spectral regions sampling 1226-1236 cm-1 (CH4), 743-747 cm-1 (C2H2 & HCN), and 818-823 cm-1 (C2H6). Observing in a scan mode we mapped the northern hemisphere of Jupiter, achieving full latitudinal coverage and extensive longitudinal coverage at each latitude. Here we present initial results including spatial maps of the emission lines and radiative transfer derivations of Jupiter's stratospheric temperature field. These data form the basis of an investigation of the energetics of Jupiter's stratosphere, its heating and cooling by radiative and dynamical mechanisms.

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