Quarterly 1 NASA Quarterly UVIS Q (February - April 2009)

Quarterly 2 UVIS: Science Highlights Ultraviolet image of Saturn’s rings This false color image of Saturn’s rings shows reflected sunlight near 180 nm. The shadow of the planet on the rings is visible at lower right. Warmer colors (red) indicate brighter regions of the rings. (Colwell)

Quarterly 3 UVIS: Accomplishments Science Highlights – Analyzed periodic structure in Huygens ringlet and searched for satellite wake signal. (Colwell) – Developed new self-gravity wake model. (Colwell)

Quarterly 4 UVIS: Accomplishments Publications – Published this quarter2 – In Press (Went into press Feb-Apr and also includes still in press from earlier quarters)3 – Submitted (Submitted Feb-Apr and also includes submitted earlier and still in review) 21 – Published 2009 to date:3 – Published Entire mission80 Presentations at scientific meetings – 1 Paper at the Lunar and Planetary Science Conference (LPSC) (Hendrix) – 2 paper at the EGU (Esposito, Yung) Public Outreach and Press Activities (Feb - Apr 2009) – 3: public talks – 0: press releases – 0: press conferences (phone interviews)

Quarterly 5 UVIS: Plans – Science Plans (May - Jul 2009) Prepare a short paper on UVIS auroral highlights (Pryor) Apply improved self-gravity wake model to expanded set of occultation data. (Colwell) Study the excess variance in the occultation data to make statements about particle size variations across the rings. Analyze waves in C ring. (Colwell) Determine photon mean path lengths and color ratios of FUV rings spectra taking into account the size of the projected field of view. (Bradley) – Publications (May - Jul 2009) — In preparation (includes submitted up to now, but not yet published)24 1 paper in press in Rev. Geophys. 2 papers in press in Icarus 1 paper in press in World Scientific Review 1 paper in review at Scholarpedia 4 paper in review at Planet. Space. Sci. 2 paper in review at J. Geophys. Res. 7 chapters in review in the book Saturn After Cassini-Huygens. Springer-Verlag. 5 chapters paper in review in the book Titan from Cassini Huygens. Springer-Verlag. 1 paper in GRL – Upcoming presentations at scientific meetings (May-Jul 2009) 1 paper at the AGU, Toronto, May 2009 (Hendrix) 2 paper at the Magnetospheres of the Outer Planets (MOP), Cologne, July 2009 (Hendrix, Pryor) 1 paper at the Icy Satellites Workshop, London, UK, June 2009 (Hendrix) 1 paper at Enceladus Workshop, Leicester, UK, June 2009 (Esposito) – Public Outreach and Press Activities (May-Jul 2009) 2: public talks (Hendrix: “Enceladus & Europa” talk at Cal State Northridge, May ; Esposito: “Enceladus & Cassini“, Leicester, UK July 19, 2009) 0: press releases 0: press conferences (phone interviews)

Quarterly 6 Backup Material

Quarterly 7 UVIS: Publications Colwell, J. E., Cooney, J. H., Esposito, L. W., Sremcevic, M Density Waves in Cassini UVIS Stellar Occultations 1. The Cassini Division. Icarus. (Published April, 2009) Dzhanoev, A. R., A. Loskutov, J. E. Howard, and M. A. F. Sanju Stabilized Chaos in The Sitnikov Problem, in Chaos in Astronomy. Ed. G. Contopoulos and P. A. Patsis. Proceedings of AIP Conference on Chaos in Astronomy, Athens, 17-20th Sept Springer-Verlag. pp (Published Jan. 2009) Gustin, J., J.-C. Grerard, W. Pryor, P. D. Feldman, D. Grodent and G.Holsclaw Characteristics of Saturn's polar atmosphere and auroral electrons derived from HST/ STIS, FUSE and Cassini/UVIS spectra. Icarus. (Published March, 2009)

Quarterly 8 UVIS: Publications (In Press) Andre, N., M. Blanc, S. Maurice, P. Schippers, E. Pallier, T. I. Gombosi, K. C. Hansen, D. T. Young, F. J. Crary, S. Bolton, E. C. Sittler, H. T. Smith, R. E. Johnson, R. A Baragiola, A. J. Coates, A. M. Rymer, M. K. Dougherty, N. Achilleos, C. S. Arridge, S. M. Krimigis, D. G. Mitchell, N. Krupp, D. C. Hamilton, I. Dandouras, D. A. Gurnett, W. S. Kurth, P. Louarn, R. Srama, S. Kempf, J. H. Waite, L. W. Esposito, J. T. Clarke Magnetospheric Regions and Associated Plasma Processes: Synopsis of Cassini Observations During Orbit Insertion. Rev. Geophys. (In press June 2008.) Dzhanoev, A.R., A. Loskutov, J. E. Howard, and M. A. F. Sanjuan Chaos stabilization in the three body problem. A chapter in Recent Progress in Controlling Chaos, eds. M.A.F. Sanjuan and C. Grebogi. World Scientific Review. (In press Oct 2008). Clarke, J., J. Nichols, J.-C. Gerard, D. Grodent, K.C. Hansen, W. Kurth, G.R. Gladstone, J. Duval, S. Wannawichian, E. Bunce, S.W.H. Cowley, F. Crary, M. Dougherty, L. Lamy, D. Mitchell, W. Pryor, K. Retherford, T. Stallard, B. Zieger, P. Zarka, and B. Cecconi The Response of Jupiter's and Saturn's Auroral Activity to the Solar Wind, J. Geophys. Res., (In press Feb. 2009).

Quarterly 9 UVIS: Publications (Submitted) Albers, N, M. Sremcevic, J.E. Colwell, and L.W. Esposito Saturn’s F Ring as seen by Cassini UVIS: Kinematics and Statistics. Icarus. (Submitted February, 2009) Colwell, J. E., French, R. G., Marouf, E. A., Murray, C. D., Nicholson, P. D., Tiscareno, M. S Ring Structure. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. (Submitted in August 2008) Charnoz, S., L. Dones, L.W. Esposito, P.R. Estrada, M.M. Hedman Origin and evolution of Saturn’s ring system, A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. (Submitted August 2008) Cravens, T.E., R. V. Yelle, J.-E. Wahlund, D. E. Shemansky Composition and Structure of the Ionosphere and Thermosphere. A chapter in the book Titan from Cassini Huygens. Springer-Verlag. (Submitted Sept. 2008) Flasar, F. M., K. H. Baines, M. K. Bird, T. Tokano and R. A. West Atmospheric Dynamics and Meteorology. A chapter in the book book Titan from Cassini Huygens. Springer-Verlag. R. Brown et al. Eds. (Submitted in September 2008) Fouchet, T., J. I. Moses, B. J. Conrath and R. West Saturn: Composition and Chemistry. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. M. Dougherty et al. Eds. (Submitted in September 2008) Gustin, J, J.M. Ajello, M.H. Stevens, A.W. Stephan, I. Stewart, K. Larsen, L.W. Esposito, W. McClintock Titan Airglow Spectra from Cassini UVIS: III. FUV Limb Analysis. GRL. (Submitted March 25, 2009 per Joe) Hansen, C. J.,H. Waite, S. Bolton Titan in the Cassini / Huygens Extended Mission. A chapter in the book Titan from Cassini Huygens. Springer-Verlag. (Submitted September, 2008) Howard, J.E Stability of Hamiltonian Equilibria. Scholarpedia. (Submitted in October 2007.) No printed copy, just online. Liang, M. C., A. S. Wong, D. Henze, M. Adamkovics, K. Boering and Y. L.Yung Synergistic study of hydrocarbon photochemistry in laboratory and planetary atmospheres. Planet. Space. Sci., (Submitted Sept. 2008) Liu, X., A. Heays, D. E. Shemansky, B. R. Lewis and P. D. Feldman Analysis of terrestrial-thermospheric N2 c 1S(0)~b’1S(1) - X 1S dayglow emission observed by the Far Ultraviolet Spectroscopic Explorer, J. Geophys. Res., (Submitted May 12, 2008) Mauk, B.H., J. Cuzzi, D. Hamilton, T. Hill, G. Hospodarsky, R. Johnson, C. Paranicas, E. Roussos, C. Russell, D. Shemansky, E. Sittler,R. Thorne Fundamental Plasma Processes in Saturn’s Magnetosphere. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. (Submitted Sept. 2008) Melin, H., D. E. Shemansky, and X. Liu, 2009, The distribution of hydrogen and atomic oxygen in the magetospher of Saturn, Planet. Space Sci., (Submitted November, 2008) Continued…

Quarterly 10 UVIS: Publications (Submitted) Continued from previous page: Nagy, Andrew F., A. J. Kliore, M. Mendillo, S. Miller, L. Moore, J. I. Moses, I. Muller-Wodarg, D. Shemansky Upper Atmosphere and Ionosphere of Saturn. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. (Submitted Sept. 2008) Robbins, S.J., Stewart, G.R., Lewis, M.C., Colwell, J.E., and M. Sremcevic Estimating the Masses of Saturn's A and B Rings from High-Optical Depth N-Body Simulations and Stellar Occultations. Icarus. (Submitted in December 2008) Shemansky, D. E., X. Liu, and H. Melin, 2009, The Saturn Hydrogen Plume, Planet. Space Sci., (Submitted November, 2008) Shemansky, D. E., and X. Liu, 2009, Saturn Upper Atmospheric Structure from Cassini EUV/FUV Occulations, Planet. Space Sci., (Submitted November, 2008) Sittler, E., C. Bertucci, A. Coates, T. Cravens, I. Dandouras, and D. Shemansky Energy deposition processes in Titan’s upper atmosphere. A chapter in the book Titan from Cassini Huygens. Springer-Verlag. (Submitted Sept. 2008) Spencer, J.R., A. C. Barr, L.W. Esposito, P. Helfenstein, A.P. Ingersoll, R. Jaumann, C.P. McKay, F. Nimmo, C.C. Porco, J.H. Waite Enceladus: An Active Cryovolcanic Satellite. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. (Submitted Oct. 2009) Tomasko, M. G., and R. A. West. Aerosols in Titan's Atmosphere A chapter in the book book Titan from Cassini Huygens. Springer-Verlag. R. Brown et al. Eds. (Submitted in September 2008) West, R. A., K. H. Baines, E. Karkoschka and A. Sanchez-Lavega Clouds and Aerosols in Saturn's Atmopsphere. A chapter in the book Saturn After Cassini-Huygens. Springer-Verlag. M. Dougherty et al. Eds. (Submitted in September 2008)

Quarterly 11 UVIS: Science Presentations – Lunar and Planetary Science Conference ( LPSC), March March 23-27, 2009, Houston, TX Hendrix, A.R. & B. J. Buratti: Multi-wavelength photometry of Enceladus and Dione. – EGU, April 19-24, 2009, Vienna, Austria M. C. Liang, D. Henze, M. Adamkovics, E. F. Chu, K. Boering, and Y. L. Yung: Synergistic Study of Hydrocarbon Photochemistry in the Laboratory and Planetary Atmospheres

Quarterly 12 UVIS: Outreach #: EPO: Talks to school children, teachers and public (Feb - Apr 2009) – Hendrix: Public Talk: “Enceladus & Europa“. U. Arkansas, Fayetteville, April 17. – Colwell: Running Rings Around Saturn, March 4, 2009, to the Café Scientifique of Orlando. – Colwell: Running Rings Around Saturn, February 27, 2009, to the UCF Math Department Interdisciplinary Seminar. #: Press releases (Feb - Apr 2009) – None this quarter #: Press conferences & interviews (Feb - Apr 2009) – None this quarter