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An analysis of the reflection spectrum of Jupiter from 1500 Å to 1740 Å

Gladstone, G. Randall and Yung, Yuk L. (1983) An analysis of the reflection spectrum of Jupiter from 1500 Å to 1740 Å. Astrophysical Journal, 266 (1). pp. 415-424. ISSN 0004-637X. doi:10.1086/160789.

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A study is made of the UV reflection spectrum of Jupiter as measured by the International Ultraviolet Explorer. Detailed modeling reveals the mixing ratios of C_2H_2, C_2H_6, and C_4H_2 to be (1.0 ± 0.1) x 10^(-1), (6.6 ± 5.3) x 10^(-6), and (2.9 ± 2.0) x 10^(-10), respectively, in the pressure region between ~3 and 40 mbar. Upper limits in this pressure region for the mixing ratios of C_2H_4 and NH_3 were determined to be (3.9^(+4.9)_(-3.9))x10^(-10) and (4.2^(+6.7)_(-4.2))x10^(-9), respectively. An upper limit to the optical depth of dust above the tropopause, assuming it is well mixed, is 0.2^(+0.3)_(-1.4), and an upper limit on the dayglow emission by the Lyman bands of H_2 is 1.4^(+2.4)_(-1.4) kR. Comparison with Voyager results suggests that the scale height of C_2H_2 in the region 150-10 mbar is approximately twice that of the bulk atmosphere, consistent with the IUE observation of cosine-like limb darkening in the north-south direction on Jupiter in this spectral range. These results are of use in the photochemical modeling of the upper atmosphere of Jupiter.

Item Type:Article
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Yung, Yuk L.0000-0002-4263-2562
Additional Information:© American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1982 April 5; accepted 1982 August 24. We would like to thank M. Allen, J. Clarke, W. Maguire, R. Panek, M. Summers, and an anonymous reviewer for helpful comments and discussions. This research was supported by NASA grant NSG-7376 of the Planetary Atmosphere Program. This is contribution number 3646 of the Division of Geological and Planetary Sciences, California Institute of Technology.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
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Subject Keywords:planets: abundances, planets: atmospheres, planets: Jupiter, planets: spectra, ultraviolet: spectra
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Caltech Division of Geological and Planetary Sciences3646
Issue or Number:1
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Official Citation:An analysis of the reflection spectrum of Jupiter from 1500 Å to 1740 Å Gladstone, G. R.; Yung, Y. L. Astrophysical Journal, Part 1, vol. 266, Mar. 1, 1983, p. 415-424. (ApJ Homepage) Publication Date: 03/1983
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49296
Deposited By: Ruth Sustaita
Deposited On:05 Sep 2014 21:57
Last Modified:10 Nov 2021 18:42

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