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Phosphine absorption in the 5-micron window of JupiterSince the original suggestion by Gillett et al. (1969) it has generally been assumed that the region of partial transparency near 5 micron in Jupiter's atmosphere (the 5-micron window) is bounded by the nu sub 4 NH3 at 6.1 micron and the nu sub 3 CH4 band at 3.3 micron. New measurements of Jupiter and of laboratory phosphine (PH3) samples show that PH3 is a significant contributor to the continuum opacity in the window and in fact defines its short-wavelength limit. This has important implications for the use of 5-micron observations as a means to probe the deep atmospheric structure of Jupiter. The abundance of PH3 which results from a comparison of Jovian and laboratory spectra is about 3 to 5 cm-am. This is five to eight times less than that found by Larson et al. (1977) in the same spectral region, but is in good agreement with the result of Tokunaga et al. (1979) from 10-micron observations.
Document ID
19800029791
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Beer, R.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Taylor, F. W.
(California Institute of Technology, Jet Propulsion Laboratory, Earth and Space Sciences Div., Pasadena Calif., United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1979
Publication Information
Publication: Icarus
Volume: 40
Subject Category
Lunar And Planetary Exploration
Accession Number
80A13961
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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