Science Seminars

10/13/2016 – Emilie Royer; Ultraviolet Characteristics of the Saturnian Satellites

Speaker: Emilie Royer (LASP)
Date: Tuesday, Oct 13, 2020
Time: 4:00 PM
Location: SPSC W120

Seminar Abstract:

The Ultraviolet (UV) wavelengths can be used to study upper atmospheres as well as airless planetary body surfaces. Since 2004, the Ultraviolet Imaging Spectrograph (UVIS) onboard the Cassini spacecraft has been observing the wide variety of satellites orbiting around Saturn. Its EUV and FUV channels, spanning wavelengths from 56 to 190 nm, recorded thousands of spectra to allow us understand the effect of UV in the cronian system. During this seminar, I will demonstrate how UVIS data can be used to retrieve photometric properties of the surface of satellites such as Mimas, Tethys or Dione and to analyze the weathering processes affecting those airless surfaces. I will also demonstrate how the UVIS data can be used to study the Titan airglow and help understand the interactions between Titan’s upper atmosphere, its environment and the Saturn’s magnetosphere.