elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Hydrocarbons on Saturn's satellites Iapetus and Phoebe

Cruikshank, Dale P. and Wegryn, Eric and Dalle Ore, C. M. and Brown, R. H. and Bibring, J.-P. and Buratti, B. J. and Clark, R. N. and McCord, T. B. and Nicholson, P. D. and Pendleton, Y. J. and Owen, T. C. and Filacchione, G. and Coradini, A. and Cerroni, P. and Capaccioni, F. and Jaumann, R. and Nelson, R. M. and Baines, K. H. and Sotin, C. and Bellucci, G. and Combes, M. and Langevin, Y. and Sicardy, B. and Matson, D. L. and Formisano, V. and Drossart, P. and Mennella, V. (2008) Hydrocarbons on Saturn's satellites Iapetus and Phoebe. Icarus: International Journal of Solar System Studies, 193 (2), pp. 334-343. Elsevier. DOI: 10.1016/j.icarus.2007.04.036 ISSN 0019-1035

Full text not available from this repository.

Abstract

Material of low geometric albedo (pVless-than-or-equals, slant0.1) is found on many objects in the outer Solar System, but its distribution in the saturnian satellite system is of special interest because of its juxtaposition with high-albedo ice. In the absence of clear, diagnostic spectral features, the composition of this low-albedo (or “dark”) material is generally inferred to be carbon-rich, but the form(s) of the carbon is unknown. Near-infrared spectra of the low-albedo hemisphere of Saturn's satellite Iapetus were obtained with the Visible–Infrared Mapping Spectrometer (VIMS) on the Cassini spacecraft at the fly-by of that satellite of 31 December 2004, yielding a maximum spatial resolution on the satellite's surface of not, vert, similar65 km. The spectral region 3–3.6 μm reveals a broad absorption band, centered at 3.29 μm, and concentrated in a region comprising about 15% of the low-albedo surface area. This is identified as the C–H stretching mode vibration in polycyclic aromatic previous termhydrocarbonnext term (PAH) molecules. Two weaker bands attributed to –CH<sub>2</sub>– stretching modes in aliphatic previous termhydrocarbonsnext term are found in association with the aromatic band. The bands most likely arise from aromatic and aliphatic units in complex macromolecular carbonaceous material with a kerogen- or coal-like structure, similar to that in carbonaceous meteorites. VIMS spectra of Phoebe, encountered by Cassini on 11 June 2004, also show the aromatic previous termhydrocarbonnext term band, although somewhat weaker than on Iapetus. The origin of the PAH molecular material on these two satellites is unknown, but PAHs are found in carbonaceous meteorites, cometary dust particles, circumstellar dust, and interstellar dust.

Item URL in elib:https://elib.dlr.de/53241/
Document Type:Article
Title:Hydrocarbons on Saturn's satellites Iapetus and Phoebe
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cruikshank, Dale P.NASA Ames Research Center, Moffett Field, CA, USAUNSPECIFIED
Wegryn, EricSETI Institute, Mountain View, CA, USAUNSPECIFIED
Dalle Ore, C. M.SETI Institute, Mountain View, CA, USAUNSPECIFIED
Brown, R. H.Lunar and Planetary Laboratory and Steward Observatory, University of Arizona, Tucson, AZ, USAUNSPECIFIED
Bibring, J.-P.Institut d'Astrophysique Spatiale, Université de Paris-Sud, Orsay, FranceUNSPECIFIED
Buratti, B. J.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Clark, R. N.US Geological Survey, Denver Federal Center, Denver, CO, USAUNSPECIFIED
McCord, T. B.Space Science Institute NW, Winthrop, WA, USAUNSPECIFIED
Nicholson, P. D.Cornell University, Space Sciences Building, Ithaca, NY, USAUNSPECIFIED
Pendleton, Y. J.NASA Ames Research Center, Moffett Field, CA, USAUNSPECIFIED
Owen, T. C.Institute for Astronomy, University of Hawaii, Honolulu, HI, USAUNSPECIFIED
Filacchione, G.INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIED
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
Capaccioni, F.INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIED
Jaumann, R.UNSPECIFIEDUNSPECIFIED
Nelson, R. M.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Baines, K. H.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Sotin, C.University of Nantes, Nantes, FranceUniversity of Nantes, Nantes, FranceUNSPECIFIED
Bellucci, G.INAF-IASF Istituto dello Spazio Interplanetario, Roma, ItalyUNSPECIFIED
Combes, M.Observatoire de Paris–Meudon, Département Recherche Spatial, Meudon, FranceUNSPECIFIED
Langevin, Y.Institut d'Astrophysique Spatiale, Université de Paris-Sud, Orsay, FranceUNSPECIFIED
Sicardy, B.Observatoire de Paris–Meudon, Département Recherche Spatial, Meudon, FranceUNSPECIFIED
Matson, D. L.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Formisano, V.INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIED
Drossart, P.Observatoire de Paris–Meudon, Département Recherche Spatial, Meudon, FranceUNSPECIFIED
Mennella, V.INAF-OAC, Osservatorio Astronomico di Capodimonte, Napoli, ItalyUNSPECIFIED
Date:2008
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
Volume:193
DOI :10.1016/j.icarus.2007.04.036
Page Range:pp. 334-343
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Iapetus, organic chemistry, satellites composition, spectroscopy
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
Deposited By: Pieth, Susanne
Deposited On:29 Feb 2008
Last Modified:27 Apr 2009 14:43

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.