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Saturn's icy satellites investigated by Cassini VIMS. I. Full-disk properties: 350-5100nm reflectance spectra and phase curves

Filacchione, G. and Capaccioni, F. and McCord, T.B. and Coradini, A. and Cerroni, P. and Bellucci, G. and Tosi, F. and D'Aversa, E. and Formisano, V. and Brown, R.H. and Baines, K.H. and Bibring, J.-P. and Buratti, B.J. and Clark, R.N. and Combes, M. and Cruishank, D.P. and Drossart, P. and Jaumann, R. and Langevin, Y. and Matson, D.L. and Mennella, V. and Nelson, R.M. and Nicholson, P.D. and Sicardy, B. and Sotin, C. and Hansen, G. and Hibbitts, K. and Showalter, M. and Newman, S. (2007) Saturn's icy satellites investigated by Cassini VIMS. I. Full-disk properties: 350-5100nm reflectance spectra and phase curves. Icarus: International Journal of Solar System Studies (186), pp. 259-290. ELSEVIER.

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Official URL: http://icarus.cornell.edu/index.html

Abstract

Abstract: Saturn's icy satellites are among the main scientific objectives of the Cassini-VIMS (Visual and Infrared Mapping Spectrometer) experiment. This paper contains a first systematic and comparative analysis of the full-disk spectral properties of Dione, Enceladus, Epimetheus, Hyperion, Iapetus, Mimas, Phoebe, Rhea and Tethys as observed by VIMS from July 2004 to June 2005. The disk integrated properties (350–5100 nm reflectance spectra and phase curves at 550–2232 nm) and images of satellites are reported and discussed in detail together with the observed geometry. In general, the spectra in the visible spectral range are almost featureless and can be classified according to the spectral slopes: from the bluish Enceladus and Phoebe to the redder Iapetus, Hyperion and Epimetheus. In the 1000–1300 nm range the spectra of Enceladus, Tethys, Mimas and Rhea are characterized by a negative slope, consistent with a surface largely dominated by water ice, while the spectra of Iapetus, Hyperion and Phoebe show a considerable reddening pointing out the relevant role played by darkening materials present on the surface. In between these two classes are Dione and Epimetheus, which have a flat spectrum in this range. The main absorption bands identified in the infrared are the 1520, 2020, 3000 nm H2O/OH bands (for all satellites), although Iapetus dark terrains show mostly a deep 3000 nm band while the 1520 and 2020 nm bands are very faint. In this spectral range, the Iapetus spectrum is characterized by a strong reddening. The CO2 band at 4260 nm and the Fresnel ice peak around 3100 nm are evident only on Hyperion, Phoebe and Iapetus. The phase curves at 550 and at 2232 nm are reported for all the available observations in the 0°–144° range; Rhea shows an opposition surge at visible wavelengths in the 0.5°–1.17° interval. The improvement on the retrieval of the full-disk reflectance spectra can be appreciated by a direct comparison with ground-based telescopic data available from literature. Finally, data processing strategies and recent upgrades introduced in the VIMS-V calibration pipeline (flat-field and destriping–despiking algorithm) are discussed in appendices.

Item URL in elib:https://elib.dlr.de/51322/
Document Type:Article
Title:Saturn's icy satellites investigated by Cassini VIMS. I. Full-disk properties: 350-5100nm reflectance spectra and phase curves
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Filacchione, G.Istituto Fisica Spazio interplanetariom CNR, Roma, ItalyUNSPECIFIED
Capaccioni, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
McCord, T.B.Space Science Inst., Winthrop WAUNSPECIFIED
Coradini, A.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
Cerroni, P.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
Bellucci, G.INAF-IASF, Roma, ItalyUNSPECIFIED
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
D'Aversa, E.Istituto Fisica Spazio Interplanetario, CNR, Roma, ItalyUNSPECIFIED
Formisano, V.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
Brown, R.H.Lunar and Planetary Laboratory and Steward observatory, University of Arizona, TucsonUNSPECIFIED
Baines, K.H.JPL, California Institute of Technology, Pasadena, USAUNSPECIFIED
Bibring, J.-P.Université de Paris Sud-Orsay, Institut d'Astrophysique Spatial, Orsay Cedex, FranceUNSPECIFIED
Buratti, B.J.JPL, California Institute of Technology, Pasadena, USAUNSPECIFIED
Clark, R.N.USGS, Denver Federal Center, Colorado, USAUNSPECIFIED
Combes, M.Observatoire de Paris-Meudon, Dept. Recherche Spatial, Meudon Cedex, FranceUNSPECIFIED
Cruishank, D.P.NASA Ames Research Center, Astrophysics Branch Moffett FieldUNSPECIFIED
Drossart, P.Observatoire de Paris-Meudon, Dept. Recherche Spatial, Meudon Cedex, FranceUNSPECIFIED
Jaumann, R.UNSPECIFIEDUNSPECIFIED
Langevin, Y.Institut d'Astrophysique Spatiale, CNRS, Orsay, FranceUNSPECIFIED
Matson, D.L.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Mennella, V.Osservatorio Astronomico di Capodimonte, Napoli, ItalyUNSPECIFIED
Nelson, R.M.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Nicholson, P.D.Cornell University, Ithaca, NY, USAUNSPECIFIED
Sicardy, B.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Sotin, C.University of Nantes, Nantes, FranceUNSPECIFIED
Hansen, G.Bear Fight Center, Space Science InstituteUNSPECIFIED
Hibbitts, K.Department of Earth and Space Sciences, University of Washington, Seattle, WA, USAUNSPECIFIED
Showalter, M.NASA Ames Research Center, Moffett Field, CA, USAUNSPECIFIED
Newman, S.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USAUNSPECIFIED
Date:2007
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:pp. 259-290
Publisher:ELSEVIER
Status:Published
Keywords:Saturn, satellites; Spectroscopy; Infrared observations; Image processing
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben CASSINI (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Kehmeier, Helen
Deposited On:01 Oct 2007
Last Modified:27 Apr 2009 14:21

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