NASA Quarterly
UVIS
Q1 - 2013
(Nov 2012– Jan 2013)
Quarterly
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UVIS: Science Highlights
Quarterly
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UVIS: Accomplishments
Science Highlights (from this quarter: Nov 2012 – Jan 2013)
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Quarterly
Haloes in Saturn’s rings can be explained by the same dynamics that creates straw in the
strongest density waves. A “Predator-Prey” model of moon-triggered clumping gives higher
velocity for collisions, which can remove ring-particle regolith, depositing this brighter material
in a “halo” around the wave.
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UVIS: Accomplishments
• Publications
– Published this quarter
– In press (Went into press Nov 2012-Jan 2013, also includes still in press from earlier quarters)
– Submitted (Submitted Nov 2012-Jan 2013, also includes submitted earlier and still in review)
– Published 2013 to date (since Nov. 2012)
– Published entire mission
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7
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154
• Presentations at scientific conferences (Nov 2012 – Jan 2013)
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13 presentations at the AGU in San Francisco, December 3-7, 2012 (Baillie, Becker, Bradley, Colwell (2),
Dove, Esposito, Gustin, Hansen, Lavvas, Meinke, West, Yung)
• Public Outreach and Press Activities (Nov 2012 – Jan 2013)
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–
–
Quarterly
0: public talks
2 : press releases
0: press conferences (phone interviews)
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UVIS: Plans
– Science Plans (Feb – Apr 2013)
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Bradley: Continue investigation of ring particle albedo
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Bradley: Compare Saturn ring spectra with Saturn icy moon spectra
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Colwell: Paper on faint and narrow rings is in production (student Bryce Bolin is lead author).
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Colwell: Paper on occultation statistics is in production (Colwell lead author).
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Colwell: New paper on self-gravity wakes is in preparation (Colwell or Jerousek lead author).
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Colwell: Submit new and updated occultation data sets to the Planetary Data System.
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Colwell: Paper on analysis of Rev 9 solar occ diffraction signal from F ring is in preparation (student Becker is lead
author).
– Publications (Feb – Apr 2013) In preparation (includes submitted, but not yet published)
Quarterly
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1 paper in press in an AGU monograph on the auroras
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1 paper in review in Astron. J
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1 paper in review in GRL
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1 paper in review, 2 papers in press in Icarus
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1 paper in review in JGR
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1 paper in review in J. Mol. Spectrosc.
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2 papers in review in Planet. Space Sci.
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1 chapter in press in the book Titan: Surface, Atmosphere and Magnetosphere
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UVIS: Plans
Continued from last page
–Upcoming presentations at scientific conferences (Feb – Apr 2013)
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1+ presentations at LPSC, The Woodlands, Texas, March 18-22, 2013 (Esposito)
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1+ presentations at EGU, Vienna, Austria, April 7-12, 2013 (Esposito)
–Public Outreach and Press Activities (Feb – Apr 2013)
Quarterly
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0: public talk
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0: press releases
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0: press conference (phone interview)
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Backup Material
Quarterly
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UVIS: Publications - 2013
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Ajello, J.M, West, R.A., J. Gustin, K. Larsen, A.I.F. Stewart, L.W. Esposito, W.E. McClintock, G.M. Holsclaw, E.T.
Bradley. 2012. Cassini UVIS Observations of Titan Nightglow Spectra. JGR. VOL. 117, A12315,
doi:10.1029/2012JA017888. (Published 12/22/12)
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Hubert, B. ., J.-C. Gérard, J. Gustin, D.V. Bisikalo, V.I. Shematovich and R.G. Gladstone. 2012. Cassini-UVIS
observation of dayglow FUV emissions of carbon in the thermosphere of Venus. Icarus. Volume 220, Issue 2, p.
635-646, doi: 10.1016/j.icarus.2012.06.002 (Published August 2012. Didn’t know in time for previous report).
Quarterly
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UVIS: Publications (In Press)
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Gérard, J.C., Gustin, J., Pryor, W.R., Grodent, D., Bonfond, B., Radioti, A., Gladstone, R.G., Clarke, J.T., Nichols,
J.D., 2012. Remote sensing of the energy of auroral electrons in Saturn’s atmosphere: Hubble and Cassini spectral
observations. Icarus. (Accepted Dec. 2012.)
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Gurnett, D. and W. Pryor. 2012. Auroral Processes Associated with Saturn's Moon Enceladus. For inclusion in an
AGU monograph on the auroras. (Accepted spring 2012)
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Hendrix, A. R., T. A. Cassidy, B.J. Buratti, C. Paranicas, C. J. Hansen, B.D. Teolis, E. Roussos, P.Kollmann, T.
Bradley, R. Johnson. 2012. Mimas’ Far-UV Albedo: Spatial Variations. Icarus. (Accepted June 2012)
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West, R., P. Lavvas, C. Anderson, and H. Imanaka. 2012. Titan Haze. A chapter in Titan: Surface, Atmosphere
and Magnetosphere. Eds. I. Mueller-Wodarg, C. Griffith, T. Cravens and E. Lellouch. Cambridge University Press
[Cambridge Planetary Science Series]. (Accepted March 1, 2012)
Quarterly
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UVIS: Publications (Submitted)
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Baillié, K., Colwell, J. E., Esposito, L. W. 2012. Meter-sized moonlet population in Saturn’s C ring and Cassini
Division. Astron. J. (Submitted July 2012)
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Bradley, E.T., J.E. Colwell, L.W. Esposito, 2012. Scattering properties of Saturn’s rings from Cassini UVIS
spectra. Icarus. (Submitted August 2012)
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Carbary, J., D. Mitchell, and W. Pryor. 2012. Correlation of Saturn's Ultraviolet Aurora with Energetic Neutral
Atoms. GRL. (Submitted June 28, 2012)
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Cheng L., Zhang, X., Kammer, J.A., Liang, M-C., Yung, Y.L. 2013. Eddy Diffusion Profile of Titan's Atmosphere
Revealed by Cassini Observations. Planet. Space Sci. (Submitted Nov. 2012)
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Gustin, J. , Gerard, J.C., Grodent, D., Gladstone, G.R., Clarke, J.T., Pryor, W.R., Dols, V., Ajello, J.M. 2012.
Effects of methane on giant planet's UV emissions and implications for the auroral characteristics. J. Mol.
Spectrosc.. (Submitted Dec. 2012)
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Jackman, C.M., N. Achilleos, S.W.H. Cowley, E.J. Bunce, A. Radioti, D. Grodent, S.V. Badman, M.K. Dougherty,
W. Pryor. 2012. Auroral counterpart of magnetic field dipolarizations in Saturn’s tail. JGR. (submitted February,
2012)
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Kammer, J.A., Shemansky, D.E., Zhang, X., Yung, Y.L. 2013. Composition of Titan's Upper Atmosphere from
Cassini UVIS EUV Stellar Occultations. Planet. Space Sci. (Submitted Nov. 2012.)
Quarterly
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UVIS: Science Presentations – Q3-2012 (Aug-Oct 2012)
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AGU, San Francisco, December 3-7
Quarterly
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Baillié: “Small Propeller Signatures in the C Ring and Cassini Division”
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Becker: “The Population of Small Particles in Saturn’s Rings from Diffraction in Stellar Occultations”
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Bradley: “Constraining Small Scale Compositional Variations in Saturn’s Rings Through Analysis of Cassini UVIS Far Ultraviolet
Reflectance Spectra”
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Colwell: “Variations in Self-Gravity Wake Structures Across Saturn’s Rings”
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Dove: “Low-Velocity Aggregate Collisions Simulating Planetary Ring Dynamics”
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Esposito: “Haloes seen in UVIS reflectance”
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Gustin: “Saturn temperature profiles at low, medium and high latitudes derived from UVIS EUV Solar occultations”
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Hansen: “Deriving the Structure and Composition of Enceladus’ Plume from Cassini Occultation Observations”
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Hicks (Yung): “A Termolecular Reaction Mechanism for Nitrogen Incorporation in Aerosol Produced by Far UV Irradiation of
CH4-N2 Atmospheres “
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Lavvas: “Aerosol growth in Titan's ionosphere
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Meinke: "Accretion in Saturn's F Ring"
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Spilker (Colwell): “Studies of Saturn’s rings from UV to far IR: Constraints on ring particle properties and ring structure”
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West: “Airglow on Titan During Eclipse”
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UVIS: Outreach – Q1-2013 (Nov 2012 – Jan 2013)
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EPO: Talks to school children, teachers and public
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Hansen: “Exploring Saturn with the Cassini mission”, Junior ROTC at Dixie High School (3 sessions), St. George
UT, Dec. 7, 2012
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Bradley: “Making a ring particle” Kimball Wiles Elementary School (50 4th grade students), Gainesville, Florida;
December 17, 2013
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Esposito: “Applied Mathematics Dynamics” University of Colorado, Boulder, CO (Public Seminar), November 14,
2012
Press releases
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Esposito: Article in Cosmos magazine, “Snowshoe hares and Saturn's rings”, October 24, 2012.
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Esposito: Feature story about 15th anniversary of Cassini launch, interview with Hank Lacey, freelance science
writer for Denver area media, October 16 2012.
Press conferences & interviews
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None this quarter
Quarterly
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