NASA Quarterly
UVIS
Q1 - 2012
(Nov 2011 - Jan 2012)
Quarterly
1
<date>
UVIS: Science Highlight
Figure 10 from Esposito et. al 2012 was
chosen as the cover image for Icarus
Volume 217, Issue 1. (January 2012)
Larry W. Esposito, Nicole Albers, Bonnie
K. Meinke, Miodrag Sremčević,
Prasanna Madhusudhanan, Joshua E.
Colwell, Richard G. Jerousek. A
predator–prey model for moon-triggered
clumping in Saturn’s rings. 217, 1, 103114.
Fig. 10. Average significance of wavelet power (weighted Z
– transform, summed over multiple occultations, see text. for
successive subsets of occultation data. The area shows 250
km inside the B ring edge. Each frame presents the mean
from all occultations within the time period indicated, for
wavelength scales of 0.1 to 5 km. The statistical
significance, as calculated using Foster (1996) WWZ
wavelet toolkit, is indicated by color bar at bottom. The topmost panel is based on only five occultations, which were by
rather dim stars or with low B angle and the significance is
questionable. In contrast other panels are based on 23, 15,
21 and 25 occultations, respectively. Any subset of
occultations cover essentially random corotating longitudes,
which is clear from Fig. 7. The wavelet cone-of-influence is
outside the figure and does not affect the shown values.
Quarterly
2
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UVIS: Accomplishments
• Publications
– Published this quarter
3
–
In press (Went into press Nov ‘11 - Jan ‘12 and also includes still in press from earlier quarters)
7
–
Submitted (Submitted Nov ‘11 - Jan ‘12 and also includes submitted earlier and still in review)
6
–
Published 2012 to date
3
–
Published entire mission
151
• Presentations at scientific conferences (Nov 2011 - Jan 2012)
–
5 papers at AGU 2011, San Francisco, December 2011 (Ajello, Bradley, Esposito, Hansen, Hendrix)
• Public Outreach and Press Activities (Nov 2011 - Jan 2012)
–
–
–
Quarterly
0: public talks
0 : press release
1: press conferences (phone interviews)
3
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UVIS: Plans
– Science Plans (Feb - Apr 2012)
•
Bradley: Compare Saturn ring spectra with Saturn icy moon spectra
•
Bradley: Finish off paper for submission that deals with spectral albedo properties of Saturn’s rings
•
Bradley: Continue investigation of ring particle albedo in the FUV
•
Bradley: Design observations for rings spectroscopy in the FUV during available times determined with the Cassini rings
working group.
•
Colwell: Write paper on occultation statistics
•
Colwell: Write paper on updated self-gravity wakes model and fit to data
– Publications (Feb - Apr 2012) In preparation (includes submitted, but not yet published)
•
1 paper in an AGU monograph on the auroras
•
1 paper in review at ApJL
•
1 paper in press in the proceedings book of the IAU Symposium 263
•
3 papers in press and 2 papers in review in Icarus
•
2 papers in press at JGR
•
1 paper in press and 1 paper in review in Planet. Space. Sci.
•
1 chapter in review in the book Titan: Surface, Atmosphere and Magnetosphere
13
– Upcoming presentations at scientific conferences (Feb - Apr 2012)
•
1 paper at LPSC, The Woodlands, TX, March 19-23, 2012 (Esposito, Hendrix)
•
1 paper at EGU, Vienna, Austria, April 22-28, 2012 (Esposito)
– Public Outreach and Press Activities (Feb - Apr 2012)
Quarterly
•
0: public talks
•
0: press releases
•
0: press conferences (phone interviews)
4
<date>
Backup Material
Quarterly
5
<date>
UVIS: Publications - 2012
•
Albers, N, M. Sremcevic, J.E. Colwell, and L.W. Esposito. 2012. Saturn’s F Ring as seen by Cassini UVIS:
Kinematics and Statistics. Icarus. Volume 217, p. 367-388, doi:10.1016/j.icarus.2011.11.016. (Published January
2012.)
•
Esposito, L.S., N. Albers, B. K. Meinke, M. Sremcevic, Pr. Madhusudhanan, J. Colwell, R. G. Jerousek. 2011. A
Predator-Prey Model for Moon-triggered Clumping in Saturn’s Rings. Icarus. 217, 1, 103-114. (Published Jan
2012)
•
Liu, X., D. E. Shemansky, P. V. Johnson, C. P. Malone, M.A. Khakoo and I. Kanik. 2012, Electron and photon
dissociation cross sections of H2 singlet-ungerade continua, J. Phys. B. 45 015201 doi:10.1088/09534075/45/1/015201. (Published January 2012)
Quarterly
6
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UVIS: Publications (In Press)
•
Ajello, J.M, R. S. Mangina, D. J. Strickland, D. Dziczek. 2010. Laboratory studies of UV emissions from proton
impact on N2: The Lyman-Birge-Hopfield Band System for aurora analysis. JGR. (Accepted January 2011.)
•
Baillie, K., J. E. Colwell, J. J. Lissauer, L. W. Esposito, M. Sremcevic 2011. Waves in Cassini UVIS Stellar
Occultations 2. Waves in the C Ring. Icarus. doi: 10.1016/j.icarus.2011.05.019. in preparation, anticipated
submission in October 2010, (went into review Dec. 2010)
•
Gerard, J.-C., J. Gustin, B, Hubert, G.R. Gladstone and L.W. Esposito. 2011. Measurements of the Helium 584‐ﾅ
airglow during the Cassini flyby of Venus. Planetary Space Sci. (Accepted on July 1, 2011)
•
Hendrix, A.R. and C. J. Hansen. 2010. The Surface Composition of Enceladus: Clues from the Ultraviolet.
Proceedings book of the IAU Symposium 263. DOI: 10.1017/S1743921310001626 (In press Dec. 2009, (Published
online: 06 Apr 2010)
•
Jerousek, R. G., Colwell, J. E., Esposito, L. W. 2010. Morphology and Variability of Sharp Edges in Saturn's
Rings. Icarus (In press September 2011).
•
Meinke, B.K., L. W Esposito, N. Albers, M. Sremcevic. 2012. Classification of F ring features observed in Cassini
UVIS occultations. Icarus. (Accepted Dec 27, 2011)
•
Radioti, A., D. Grodent, J.-C. Gerard, S. E. Milan, B. Bonfond, J. Gustin, and W. Pryor, 2011, Bifurcations of the
main auroral ring at Saturn: ionospheric signatures of consecutive reconnection events at the magnetopause. JGR.
(In press in August 2011)
Quarterly
7
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UVIS: Publications (Submitted)
•
Guimaraes, A.H.F., Spahn, F., Seiss, M., Albers, N., Vieira-Neto, E., Brilliantov, N.V. 2011. Aggregates in Saturn's
rings under strength regime. Icarus (Submitted December 23, 2011)
•
Gurnett, D. and W. Pryor. 2012. Auroral Processes Associated with Saturn's Moon Enceladus. For inclusion in an
AGU monograph on the auroras. (Submitted November 2011)
•
Hendrix, A. R., T. A. Cassidy, C. Paranicas, C. J. Hansen 2011. The Albedo Pattern of Mimas as measured by
Cassini UVIS. Icarus. (Submitted August 2011).
•
Kammer, J. A., X. Zhang, M.-C. Liang, D. E. Shemansky and Y. L. Yung. 2011. Observations and Modeling of
Hydrocarbons and Tholin in the Upper Atmosphere of Titan. ApJL. (Submitted Sep 27 2011)
•
Liang, M. C., A. S. Wong, D. Henze, M. Adamkovics, K. Boering and Y. L. Yung. (2011). Synergistic study of
hydrocarbon photochemistry in the laboratory and the atmosphere of Titan, Astrophys. J. (In Revision.)
•
West, R., C. Anderson, H. Imanaka and P. Lavvas. 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
(Submission expected in October 2011)
Quarterly
8
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UVIS: Science Presentations - Q1-2012 (Nov 2011-Jan 2012)
–
AGU, San Francisco, December 2011
Quarterly
•
Ajello, J.M.: Cassini UVIS Observations of Titan Ultraviolet Airglow Spectra with Laboratory Modeling from
Electron- and Proton-Excited N2 Emission Studies
•
Bradley, E.T.: Spectral and Radiative Transfer modeling of Saturn’s Rings in the Far Ultraviolet from Cassini
UVIS Spectra
•
Esposito, L.W.: A Post-Equinox View of Saturn’s Rings
•
Hansen, C.: The Structure of Enceladus’ Plume from Cassini Occultation Observations
•
Hendrix A.R.: The Ultraviolet Albedo Patterns of Mimas and Tethys
9
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UVIS: Outreach - Q1-2012 (Nov 2011-Jan 2012)
• #: EPO: Talks to school children, teachers and public
–
None this quarter
• #: Press releases
–
None this quarter
• #: Press conferences & interviews
–
Larry Esposito: Phone interview November 2011 resulting in Nov. 14th, 2011 article on New Scientist, “Boom and
bust shapes Saturn’s rings“.
Quarterly
10
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