Séminaire "Using photometry to better understand the icy surfaces of our solar system" par Inès Belgacem (ESA)

Jeudi 09 Février 2023, 13:00 - 14:00
par Stéphanie BEAUNAY


Abstract : The icy moon of our solar system are promising candidates in the search for habitabilityUsing photometry, we want to better understand the history of these fascinating bodies and help identify potential areas of interest for future missions. The study of photometry – reflectance variation with respect to the geometry of observation - can help us better understand the processes at play at the surface. The photometry of a surface is intimately linked to its microtexture (roughness, shape of particles, porosity, …), and can strongly affect all remote sensing observations if performed in varied geometric conditions. As a result, having a clear understanding of a surface photometry is the first step for any remote sensing applications such as surface mapping or spectroscopy. We have carried out regional studies of Jupiter's icy moons Europa and Ganymede as well as Saturn's moon Enceladus and compared the photometric parameters we obtained with known geological context. With this, we aim to better understand the link between photometry and physical properties of planetary surfaces and identify potential areas of interest for future missions.