1. UVIS Input to Cassini Quarterly Report
L.W. Esposito
October 24, 2005

2. UVIS Accomplishments Science Highlights
Discovered a water plume on Enceladus, measured water abundance, estimated total source, which is enough to resupply Saturn's E-ring and oxygen torus.
Measured the physical characteristics of self-gravity wakes in Saturn's A-ring, through comparison of multiple star occultations by Saturn's rings. These clumps are flat and dense, separated by large distances, and so small as to be invisible to Cassini's cameras.

3. UVIS star occultation shows Enceladus plume

4. shows ephemeral self-gravity wakes

5. UVIS observes Saturn’s aurora

6. UVIS Accomplishments (Continued)
Publications
August — October 2005: 0 scientific publications
2005 to date: 8
Entire mission: 14
In Press: 4

7. UVIS Accomplishments (Continued)
Science Talks - August — October 2005
3 Science Seminars
10 Presentations at Scientific Meetings

8. UVIS Accomplishments (Continued)
Public Outreach
Press releases
1 August—October 2005
YTD
Press conferences
1 August—October Enceladus Press conference in London: Candice Hansen
YTD
Talks to school children, teachers and public
2 August—October 2005
YTD

9. UVIS Plans (Nov. 2005—Jan. 2006) Upcoming Science Activities
Solar occultation by Titan’s atmosphere
Longitudinal coverage of icy satellites
Publications and EPO in work
2 papers submitted to journals
Community talk with Larry Esposito and Carolyn Porco at CU in December - “Cassini Views the Saturn System”
Cassini Mission to be Explored at Fiske Planetarium - Josh Colwell in October
Upcoming Science Events
AGU - December
UVIS Team Meeting - January

10. Backup Material
UVIS October 24, 2005

11. UVIS Publications: Published 2005
Esposito, L.W., J. E. Colwell, K. Larsen, W. E. McClintock, A. I. F. Stewart, J. Tew Hallett, D. E. Shemansky, J. M. Ajello, C. J. Hansen, A. R. Hendrix, R. A. West, H. U. Keller, A. Korth, W. R. Pryor, R. Reulke, Y. L. Yung. (2005). Ultra-Violet Imaging Spectroscopy shows an active Saturn system. Science. 307, LASP reprint 1000.
Hallett, J. T., D. E. Shemansky, X. Liu. (2005a). A Rotational-Level Hydrogen Physical Chemistry Model for General Astrophysical Application. ApJ. 624,
Hallett, J. T., D. E. Shemansky, X. Liu. (2005b). Fine-Structure Physical Chemistry Modeling of Uranus H2 X Quadrupole Emission. GRL. 32, L02204.
Shemansky, D.E., A.I.F. Stewart, R.A. West, L.W. Esposito, J.T. Hallet, X. Liu. (2005) The Cassini UVIS stellar probe of the Titan atmosphere. Science. 308,
Steffl, A. J., P.A. Delamere, F. Bagenal. Cassini UVIS Observations of the Io Plasma Torus. III. Temporal and Azimuthal Variability. Submitted to Icarus March, 2005.
Hallett, J.T, X. Liu, D.E. Shemansky, A Rotational-Level Hydrogen Physical Chemistry Model for General Astrophysical Application (published in ApJ 2005)
Hallett, J.T., X. Liu, D.E. Shemansky. Fine-Structure Physical Chemistry Modeling of Uranus H2 X Quadrupole Emissions (published in GRL 2005)
Hansen, C.J., A.R. Hendrix, D.E. Shemansky. Cassini UVIS Observations of Europa's Oxygen Atmosphere and Torus, (submitted to Icarus April 17, 2004, revision submitted 2/4/05)

12. UVIS Publications: Submitted 2005
Ajello, J.M., J. T. Clarke, L.W. Esposito, J. –C Gérard, D. Grodent, J. Gustin, W.E. McClintock, W.R. Pryor, A.I.F. Stewart.The Cassini Campaign Observations of the Jupiter Aurora by the Ultraviolet Imaging Spectrograph and the Space Telescope Imaging Spectrograph. Icarus, accepted July 2005.
Liu, X., D. E. Shemansky. Analysis of electron impact ionization properties of methane, JGR, In review
Hansen, C., J. Colwell, L.W. Esposito, A.R. Hendrix, W. Pryor, D. E. Shemansky, A.I.F. Stewart, R.A. West. Cassini UltraViolet Imagaing Spectrograph (UVIS) Investigation of Enceladus’ Water Vapor Plume. Science, Submitted in October
Colwell, J.E., L.W. Esposito, M. Sremcevic, Gravitational Wakes in Saturn’s A Ring Measured by Stellar Occultations from Cassini. Nature, Submitted in October.

13. UVIS Science Presentations: 2005
Seminars
Linear and Non-linear processes in Saturn's Rings, Potsdam University - July
UCLA: History of Saturn's Rings, UCLA - October
Linear and Non-linear processes in Saturn's Rings, University of Arizona - October
Science Talks
6: DPS
1: MOP
2: PSG London
1: Crete meeting on Titan

14. UVIS Outreach: 2005 Alumni Talk at CU in Jan. - Larry Esposito
Live Broadcast of Huygens in Jan. at CU - Various team members
Wireless Grid project with Boston Museum of Science in July - Larry Esposito
CHARM presentation in August - Larry Esposito
Executive Development Program in October at CU - Joshua Colwell