Abstract
Measurements of absolute line positions and shapes of eleven absorption lines of NH 3 were made using an infrared heterodyne spectrometer. Line profiles were obtained with 5 MHz resolution. NH 3 line positions relative to 12C 16O 2 and 13C 16O 2 local oscillator laser line emission frequencies were determined to ±3 MHz. Using the obtained data a search list for NH 3 spectral lines on Jupiter was generated. Observations of Jovian polar regions in search of NH 3 aR(1,1) and sQ(2,1) auroral emission revealed possible strong nonthermal features. The line widths were consistent with low local kinetic temperatures. The relatively high line intensities, determined by local pumping mechanisms, corresponded to temperatures of several hundred Kelvins. Experimental details and implications of these measurements are discussed.
Published Version
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