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Ultraviolet Imaging Spectroscopy shows an active saturnian system

Esposito, Larry W. and Colwell, Joshua E. and Larsen, Kristopher and McClintock, William E. and Stewart, A. Ian F. and Hallett, Janet Tew and Shemansky, Donald E. and Ajello, Joseph M. and Hansen, Candice J. and Hendrix, Amanda R. and West, Robert A. and Keller, H. Uwe and Korth, Axel and Pryor, Wayne R. and Reulke, Ralf and Yung, Yuk L. (2005) Ultraviolet Imaging Spectroscopy shows an active saturnian system. Science, 307 (5713). pp. 1251-1255. ISSN 0036-8075.

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Neutral oxygen in the saturnian system shows variability, and the total number of oxygen atoms peaks at 4 x 10^(34). Saturn’s aurora brightens in response to solar-wind forcing, and the auroral spectrum resembles Jupiter’s. Phoebe’s surface shows variable water-ice content, and the data indicate it originated in the outer solar system. Saturn’s rings also show variable water abundance, with the purest ice in the outermost A ring. This radial variation is consistent with initially pure water ice bombarded by meteors, but smaller radial structures may indicate collisional transport and recent renewal events in the past 10^7 to 10^8 years.

Item Type:Article
Related URLs:
URLURL TypeDescription
Shemansky, Donald E.0000-0001-7168-871X
West, Robert A.0000-0002-4320-2599
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2005 American Association for the Advancement of Science. Received 23 September 2004; accepted 2 December 2004 Published online 16 December 2004. Thanks to H. Tollerud for assistance with data processing, L. Bloom for producing the manuscript, and J. Cuzzi and the anonymous reviewers for helpful comments. This work is one part of the Cassini UVIS investigation, supported by the NASA Jet Propulsion Laboratory Cassini mission.
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Issue or Number:5713
Record Number:CaltechAUTHORS:20140820-160446094
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48750
Deposited By: Tony Diaz
Deposited On:22 Aug 2014 06:14
Last Modified:25 Jun 2020 18:02

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