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Jupiter: aerosol chemistry in the polar atmosphere

Wong, Ah-San and Lee, Anthony Y. T. and Yung, Yuk L. and Ajello, Joseph M. (2000) Jupiter: aerosol chemistry in the polar atmosphere. Astrophysical Journal Letters, 534 (2). L215-L217. ISSN 2041-8205. doi:10.1086/312675.

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Aromatic compounds have been considered a likely candidate for enhanced aerosol formation in the polar region of Jupiter. We develop a new chemical model for aromatic compounds in the Jovian auroral thermosphere/ionosphere. The model is based on a previous model for hydrocarbon chemistry in the Jovian atmosphere and is constrained by observations from Voyager, Galileo, and the Infrared Space Observatory. Precipitation of energetic electrons provides the major energy source for the production of benzene and other heavier aromatic hydrocarbons. The maximum mixing ratio of benzene in the polar model is 2 × 10^(-9), a value that can be compared with the observed value (2^(+2)_(-1)) × 10^(-9) in the north polar auroral region. Sufficient quantities of the higher ring species are produced so that their saturated vapor pressures are exceeded. Condensation of these molecules is expected to lead to aerosol formation.

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Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2000 The American Astronomical Society. Received 2000 February 23; accepted 2000 March 31; published 2000 May 4. We thank R. A.West for discussion on the aerosol formation, B. Bézard for result on ISO observations, and M. Allen, M. F. Gerstell, and G. D. McDonald for helpful comments. This work was supported by NASA grants NAG5-6263 and NAG5-8257 and two grants to J. M. A. at JPL.
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Subject Keywords:planets and satellites: individual (Jupiter)
Issue or Number:2
Record Number:CaltechAUTHORS:20140826-084858839
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Official Citation:Jupiter: Aerosol Chemistry in the Polar Atmosphere Ah-San Wong et al. 2000 ApJ 534 L215
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48890
Deposited On:26 Aug 2014 16:57
Last Modified:10 Nov 2021 18:37

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