Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...402l..25d&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 402, no. 1, p. L25-L28.
Astronomy and Astrophysics
Astrophysics
25
Astronomical Spectroscopy, Emission Spectra, Jupiter (Planet), Astronomical Models, Molecular Rotation, Vibrational Spectra, Jupiter, Infrared, Molecular Processes, Tritium, Spectroscopy, Auroras, Emissions, Spectra, Earth-Based Observations, Telescope Methods, Temperature, Comparisons, Models, Intensity, Thermosphere, Origin, Source, Procedure, Wavelengths
Scientific paper
High resolution line-resolved spectra of the auroral regions of Jupiter at 3.5 microns have been obtained in 1992 March at the Canada-France-Hawaii Telescope. From the width of H3(+) lines, a transitional temperature of 1150 K +/- 60 K is measured, quite comparable to the rotational temperature of 1250 K +/- 70 K measured from the relative intensities of the same lines. These measurements confirm that the rotational temperatures previously measured on Jupiter from 2 and 4 rovibrational bands of H3(+) are consistent with a high kinetic temperature of the ionosphere. These temperatures agree with the current models of the ionospheric heating by energetic particle precipitation.
Caldwell J. Jr. J.
Drossart Pierre
Maillard Jean Pierre
Rosenqvist Jan
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