HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Conference papers

Dione's leading/trailing dichotomy at 2.2 cm

Abstract : The surface of Dione, Saturn’s fourth-largest moon, is affected by a variety of processes, both exogenic and endogenic, although the satellite does not seem to be active today [e.g., 1]. Like its neighboring mid-sized icy airless satellites Tethys and Rhea, it exhibits a leading/trailing dichotomy, observed at UV to IR wavelengths [e.g., 2]. This dichotomy has also been reported at 2.2 cm wavelengths, in the unique resolved observation acquired by the Cassini Radar on Dione [3, Fig. 1b]. The leading hemisphere is more radar-bright than the trailing hemisphere, implying greater water ice purity on the leading side. This asymmetry may be caused by the deposition of E-ring material on the leading side, and/or by contamination by a non-icy material on the trailing side. Herein, we examine Cassini radiometry observations of Dione.
Document type :
Conference papers
Complete list of metadata

Cited literature [10 references]  Display  Hide  Download

Contributor : Catherine Cardon Connect in order to contact the contributor
Submitted on : Friday, September 18, 2020 - 6:14:10 PM
Last modification on : Thursday, April 7, 2022 - 1:58:24 PM
Long-term archiving on: : Thursday, December 3, 2020 - 1:29:26 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License


  • HAL Id : insu-02943256, version 1


Léa Bonnefoy, Alice Le Gall, Marie Azevedo, Emmanuel Lellouch, Cédric Leyrat, et al.. Dione's leading/trailing dichotomy at 2.2 cm. Europlanet Science Congress EPSC 2020, Sep 2020, Virtual Meeting, Germany. pp.EPSC2020-329. ⟨insu-02943256⟩



Record views


Files downloads