A Caltech Library Service

Titan: Aerosol photochemistry and variations related to the sunspot cycle

Allen, Mark and Pinto, Joseph P. and Yung, Yuk L. (1980) Titan: Aerosol photochemistry and variations related to the sunspot cycle. Astrophysical Journal Letters, 242 (2). L125-L128. ISSN 2041-8205. doi:10.1086/183416.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


A photochemical theory is proposed for producing complex polymers in a methane atmosphere. It is argued that the polyacetylenes (C_(2n)H_2) are the most likely precursor molecules for the formation of the stratospheric haze layer on Titan. The production of polyacetylenes involves a strong positive feedback, leading to more production of polyactylenes. The thermosphere of Titan may undergo substantial expansion and contraction over a solar cycle, with important consequences for the chemistry of the upper atmosphere.

Item Type:Article
Related URLs:
URLURL TypeDescription
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 1980 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1980 June 9; accepted 1980 August 15. We thank W. A. Goddard III and R. C. Flagan for discussions on the mechanism of soot formation; F. S. Rowland, H. Okabe, A. H. Laufer, and L. J. Stief for discussions on the kinetics of hydrocarbons; W. T. Huntress, Jr., and E. M. Purcell for discussions on the chemistry of the interstellar medium and interstellar grains; D. F. Strobel and M. B. McElroy for sharing with us their insight into the chemistry of Jovian atmospheres; and D. M. Hunten and R. M. Goody for critically reading our manuscript. This research is supported by NASA contract NSG 7376 under the Planetary Atmospheres Program. J. P. is an NAS NRC resident research associate.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
Subject Keywords:planets: atmospheres; planets: satellites; planets: Saturn; Sun: activity
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences3436
Issue or Number:2
Record Number:CaltechAUTHORS:20140903-140202245
Persistent URL:
Official Citation:Titan - Aerosol photochemistry and variations related to the sunspot cycle Allen, M.; Yung, Y. L.; Pinto, J. P. Astrophysical Journal, Part 2 - Letters to the Editor, vol. 242, Dec. 1, 1980, p. L125-L128. Publication Date: 12/1980
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49203
Deposited By: Ruth Sustaita
Deposited On:03 Sep 2014 23:47
Last Modified:10 Nov 2021 18:40

Repository Staff Only: item control page