Spatial and spectral characteristics of the near-infrared aurorae of Jupiter

Details Spatial and spectral characteristics of the near-infrared aurorae of Jupiter Spatial and spectral characteristics of the near-infrared aurorae of Jupiter

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..102...99k&link_type=abstract

Icarus (ISSN 0019-1035), vol. 102, no. 1, p. 99-106.

Astronomy and Astrophysics

Astronomy

14

Auroral Spectroscopy, Auroras, Emission Spectra, Infrared Astronomy, Jupiter Atmosphere, Near Infrared Radiation, Planetary Temperature, H Lines, Hydrogen, Hydrogen Ions, Infrared Imagery, Spatial Resolution, Jupiter, Auroras, Spectra, Wavelengths, Infrared, Structure, Analysis, Earth-Based Observations, Emissions, Intensity, Temperature, Brightness, Abundance, Hydrogen 3, Tritium, Polar Region, Procedure, Spectrography

Scientific paper

Data are presented which show the power of a long-slit IR spectrograph to yield spectral and spatial coverage of the Jovian auroral zones in an efficient manner. Strong 3 micron H3(+) lines are observed on the eastern bright spot and moderately strong 3 micron H3(+) lines in the central meridian and western region of the northern aurora. Higher temperatures are found in the central meridian and western region of the northern aurora compared with a temperature of 1000 K +/- K on the eastern bright spot, suggesting an enhanced abundance of H3(+) on the bright spot compared to other auroral regions. The H2 quadrupole lines of Q1(1), Q1(3), S1(1), and several H3(+) lines between 2 and 2.5 microns are identified in the northern auroral region. The eastern bright spot as seen in the 2 micron H2 and H3(+) emission lines is at nearly the same position as the eastern bright spot due to the 3 micron H3(+) fundamental band lines.

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