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Abundance of minerals in the phyllosilicate-rich units on Mars

Mangold, N.; Bibring, J. -P.; Gondet, B. +4 more

Context: Phyllosilicates were definitely identified on Mars by the OMEGA (Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité) instrument onboard the Mars Express spacecraft. The identification, characterization, and mapping of deposits of these minerals hold clues to the potential past habitability. They also constitute a key elemen…

New astrometric observations of Phobos with the SRC on Mars Express

Jaumann, R.; Oberst, J.; Matz, K. -D. +5 more

Aims: New astrometric measurements for Phobos are reported on the basis of 69 SRC (Super Resolution Channel) images obtained during 28 Mars Express Phobos flybys executed between 2004 and 2007.
Methods: The measurements have been made using a newly developed technique that involves positional measurements of surface control points and verifica…

A study of the Martian water vapor over Hellas using OMEGA and PFS aboard Mars Express

Bibring, J. -P.; Gondet, B.; Langevin, Y. +8 more

We used the OMEGA imaging spectrometer aboard Mars Express to study the evolution of the water vapor abundance over the Hellas basin, as a function of the seasonal cycle. The H2O column density is found to range from very low values (between southern fall and winter) up to more than 15 pr-µm during southern spring and summer. The general beh…