UVIS Input to Cassini
Quarterly Report
L.W. Esposito
January 24, 2007
(For November 2006 - January 2007)
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UVIS Accomplishments
• Science Highlights
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Detailed modeling of spectra of Iapetus, Phoebe, Hyperion and Enceladus
Rhea data analyzed to look for bound oxygen atmosphere (no detectable atmosphere).
Upper limits calculated for oxygen atmosphere column density based on non-detection
Investigated whether UVIS can detect dense jets in Enceladus’ plume
Analysis of wakes and waves in Saturn’s rings shows self-gravity and overstability
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UVIS Accomplishments (Continued)
• Scientific Publications
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Published Nov. 2006-Jan. 2007:
2006 to date:
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4
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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Entire mission:
Submitted Nov. 2006-Jan. 2007:
Submitted in 2006 (including published)
44
1
9
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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UVIS Accomplishments (Continued)
• Science Presentations - Nov. 2006 - Jan. 2007
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2 Science Seminars
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5 Presentations at Scientific Meetings
4
UVIS Accomplishments (Continued)
• Public Outreach
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Press releases
• 0 Nov. 2006-Jan. 2007
• 1 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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Press conferences & interviews
• 0 Nov. 2006-Jan. 2007
• 0 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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EPO: Talks to school children, teachers and public
• 1 Nov. 2006-Jan. 2007
• 26 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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UVIS Plans For Nov. 2006 - Jan. 2007
• Upcoming Science Activities (for next quarter)
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Analysis of Tour Tweaks
Analysis of Extended Mission Tours
• Publications in the works (submitted) this quarter
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“Moonlets and Clumps in Saturn’s F Ring” Esposito, Meinke, Colwell. Submitted to Icarus in
Sept. In review.
• EPO in the works (for next quarter)
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Ring movie
• Upcoming Science Presentations and Seminars (for next
quarter)
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PSG, Jan. 29 - Feb. 2, Pasadena (Colwell, Esposito)
EGU Apr. 16 - 20, Vienna (Esposito)
LSPC March 13-17, Houston (Hendrix, Hansen)
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Backup Material
UVIS January 24, 2007
7
UVIS Publications: Published 2006
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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Hansen, C., J. Colwell, L.W. Esposito, A.R. Hendrix, W. Pryor, D. E. Shemansky, A.I.F. Stewart,
R.A. West. (2006) Enceladus’ Water Vapor Plume. Science. 311. no.5766. 1422-1425. (Published
March 10, 2006.) å
Liu, X., and D. E. Shemansky. (2006) Analysis of electron impact ionization properties of methane,
J. Geophys. Res., 111, A04303, doi:10.1029/2005JA011454, (Published April 2006.)
Colwell, J.E., L. W. Esposito, and M. Sremcevic. (2006) Self-gravity wakes in Saturn’s A ring
measured by stellar occultations from Cassini. GRL. 33, L07201, doi:10.1029/2005GL025163
(Published in April 2006)
Parkinson, C. D., M. C. Liang, H. Hartman, C. J. Hansen, G. Tinetti, V. Meadows and Y. L. Yung.
(2006) Enceladus: Cassini Observations and Implications for the Search for Life. A&A preprint doi
http://dx.doi.org/10.1051/0004-6361:20065773 (Published November 2006)
8
UVIS Publications: Submitted 2006
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
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Hallett, J.T., D. E. Shemansky, X. Liu. (2006) Rotational-level hydrogen chemistry model of the Cassini UVIS
observed Saturn dayglow. J. Geophys. Res., (Submitted March 2006, in review.)
Tian, F., A.I.F. Stewart, Owen B. Toon, Kristopher Larsen, Larry W. Esposito. (2006) Monte Carlo Simulations of the
water vapor plume on Enceladus. Icarus. (Submitted April 2006. In Press)
Liu, X., and D. E. Shemansky. (2006) A simple model for N2 line oscillator strengths of
the
bands, Atrophys. J., 645, July 10, doi: 10.1086/’504465’,
2006. (Accepted for publication March 2006.)
Nichols, J. D., E. J. Bunce, J. T. Clarke, S. W. H. Cowley, F. J. Crary, M. K. Dougherty, J.-C. Gerard, D. Grodent,W.
R. Pryor, and A. M. Rymer, Response of Jupiter's UV auroras to interplanetary conditions as observed by theHubble
Space Telescope during the Cassini fly-by campaign. (Submitted to Annales Geophysicae June 2006, accepted
October 2006)
Colwell, J.E., L. W.Esposito, M. Sremcevic, W. E. McClintock, and G. R. Stewart. Self-Gravity Wakes and Radial
Structure of Saturn's B Ring. Icarus (submitted July 2006, revised Jan. 07 and resubmitted)
Esposito, L.W.E., B. K. Meinke, J.E. Colwell, P.D. Nicholson, M.M. Hedman. Moonlets and Clumps in Saturn’s F
Ring. Icarus. (submitted September 2006)
Hendrix, A.R., C.J. Hansen. Ultraviolet Observations of Phoebe from Cassini UVIS. Icarus. (Submitted September
2006, In review)
Liang, M-C, Yung, Y. and Shemansky, D. E. Photolytically generated aerosols in the mesosphere and thermosphere
of Titan. ApJL (submitted November 2006 )
Liu, Xianming, Shemansky, D. E., and Hallett, J.T. Extreme Non-LTE H2 in comets C/2000 WM1 (LINEAR)
and C/2001 A2 (LINEAR)
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UVIS Science Presentations:
November 2006-January 2007
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Science Seminars
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Cassini Observations and Ring History. HAO, November 1, SWRI, December 20
Presentations at Scientific Meetings
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AGU, San Francisco, December 11-15 (Colwell, Pryor,Esposito, Hansen)
NAS Sackler Conference on Exploration and Evolution, “Cassini Observations and the
History of Saturn’s Rings”. January 5 (Esposito)
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UVIS Outreach: Nov 2006-Jan 2007
• Press Releases
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None
• Press Conferences & Interviews
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None
• Talks to School teachers Children and Public
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Colwell: Public talk on Cassini at LASP attended by ~100 people.
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