DPS 35th Meeting, 1-6 September 2003
Session 40. Outer Planets/Gas Giants IV
Poster, Highlighted on, Friday, September 5, 2003, 3:30-6:00pm, Sierra Ballroom I-II

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[40.20] High Resolution Imaging Spectroscopy of H2 and H3+ Auroral Emission on Jupiter

E. Raynaud, E. Lellouch (LESIA, Observatoire de Paris), J.-P. Maillard (IAP, Paris), Th. Fouchet, P. Drossart, B. Bézard (LESIA, Observatoire de Paris), H. Waite (SPRLC, Ann Arbor), G. R. Gladstone (SWRI, San Antonio)

On October 10-12 2000, we observed Jupiter's northern and southern auroral regions at 2 \mum with the Fourier Transform Spectrometer at the Canada-France-Hawaii Telescope, in its spectro-imaging mode (BEAR). The observations were made in two narrow filters : the first one (H3+ filter), centered at 2.09 \mum, covers the strong H3+ line at 4777 cm-1, and four other weaker H3+ lines; the second one (H2 filter) covers the H2 1-0 S(1) line at 4712 cm-1 and the H3+ 4732 cm-1 line. A total of 14 data cubes were acquired; the spectral resolution is about 25000, and the seeing-limited spatial resolution is 0.4-0.6".

We present the analysis of the 14 data cubes in terms of temperature, column density of H3+ and their spatial variations in both hemispheres. Due to the detection of 2 hot band lines in the H2 filter, we are able to constrain rotational and vibrational temperatures as well.

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Bulletin of the American Astronomical Society, 35 #4
© 2003. The American Astronomical Soceity.