UVIS Input to Cassini
Quarterly Report
L.W. Esposito
July 28, 2006
(For May-Jul 2006)
UVIS Accomplishments
• Science Highlights
–
Self-gravity wakes observed throughout Saturn's B ring. Multiple occultations allow
measurement of wake properties, showing B ring self-gravity wakes are only a few meters
thick and ~ 100 meters wide with narrow (10-30 m) gaps between them.
UVIS Accomplishments (Continued)
• Scientific Publications
–
–
Published May - July 2006:
2006 to date:
0
3
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
–
–
–
Entire mission:
Submitted May - July 2006:
Submitted in 2006
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
23
1
5
UVIS Accomplishments (Continued)
• Science Presentations - May - July 2006
–
0 Science Seminars
–
8 Presentations at Scientific Meetings
UVIS Accomplishments (Continued)
• Public Outreach
–
Press releases
• 0 May - July 2006
• 1 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
–
Press conferences & interviews
• 1 May - July 2006
• 2+ 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
–
EPO: Talks to school children, teachers and public
• 19 May - July 2006
• 25 2006 YTD (From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
UVIS Plans (May - July 2006)
• Upcoming Science Activities
–
(for next quarter)
Two Enceladus flybys (one in September and one in November) and one Dione flyby in
November. FUV maps will be acquired to analyze and compare icy satellite surface
composition, grain size of ices, photometry, and to look for the existence of tenuous gases.
We will attempt to see changes in the plume discovered at Enceladus last year.
• Publications in the works this quarter
– “Moonlets and Clumps in Saturn’s F Ring” Esposito, Meinke, Colwell. To be submitted to
Icarus.
• EPO in the works
–
(for next quarter)
Ring movie
• Upcoming Science Presentations and Seminars
(for next
quarter)
–
–
Colorado State Phys. Dept. Sept 11 (Colwell)
DPS, Pasadena, Oct. 9 - 13 (Colwell, Esposito, Albers, Sremcevic, Pryor, Shemansky,
Hendrix, Meinke, Stewart)
Backup Material
UVIS July 26, 2006
UVIS Publications: Published 2006
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
•
•
•
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.)
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)
UVIS Publications: Submitted 2006
(From Q1’s start of Feb. 2006- through Q4’s end of Jan. 2007)
•
•
•
•
•
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" Submitted to
Astrophys. J. Lett. (Submitted February 2006.)
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.)
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.)
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)
UVIS Science Presentations:
May - July 2006
•
Science Seminars
–
•
None
Presentations at Scientific Meetings
–
–
–
–
COSPAR - July 16-23: (Poster by Ito, Keller, Reulke, Korth and Esposito; presentation by
Esposito
AGU - May 22-26: (Pryor, Larsen, Larsen, Esposito)
Europlanet Outer Planets Auroral Workshop, Liege, Belgium, July 4-7: (Pryor)
18th Rencontres de Blois, Blois, France, May 28-June 2: (Hansen)
UVIS Outreach: May - July 2006
• Press Releases
–
None
• Press Conferences & Interviews
–
Josh Colwell Interviewed by Todd Neff, Boulder Daily Camera, to mark Cassini's two-year
mark. Last week of June, 2006.
• Talks to School teachers Children and Public
–
18 presentations to K-8 students in Labette County Kansas and 1 presentation to general
public in Labette County Kansas as part of the National Center for Earth and Space Science
Education Journey Through the Universe Program May - May 8-11, 2006. (Colwell)