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Measurements of the H2 4-0 quadrupole bands of Uranus and Neptune |
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| Authors: | William Hayden Smith William Macy Carl B Pilcher |
| Institution: | McDonnell Center for Space Sciences, Department of Chemistry and Earth and Planetary Sciences, Washington University, St. Louis, Missouri 63130, USA;Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA;Institute for Astronomy and Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA |
| Abstract: | We find that the equivalent widths of the lines of the 4-0 H2 quadrupole band on Uranus and Neptune are substantially smaller than the values found by some previous observers. An analysis of our results based on a range of atmospheric models yields H2 abundances of 240 ± 60 km-amagats for Uranus and ?200 km amagats for Neptune. |
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