A model of interaction of Phobos' surface with the martian environment

Fabrice Cipriani 1 Olivier Witasse 1 François Leblanc 2 Ronan Modolo 3 Robert E. Johnson 4
2 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
3 HEPPI - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : We simulate space weathering of Phobos' surface due to both sputtering by solar wind ions (H+ and He2+) and planetary protons, and surface material vaporization by micrometeoroids impact. Assuming an Iron-rich composition of Phobos' regolith, we find that densities of neutral species (Fe, O, Al, Ca, Mg, Na) in the martian environment are in the range (10-4 -- 10-1 cm-3), and observe an ejecta disk with a radius of 6 martian radii in the equatorial plane and a thickness of 3 martian radii in the perpendicular plane. In order to determine the observability of such species from space based instruments, we also estimate their solar scattering emission line intensities. We conclude that Magnesium would be the only potential candidate suitable for spectral detection.
Keywords : Mars Phobos Solar wind
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Contributeur : Catherine Cardon <>
Soumis le : jeudi 10 février 2011 - 14:26:52
Dernière modification le : mercredi 19 septembre 2018 - 01:36:23

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Fabrice Cipriani, Olivier Witasse, François Leblanc, Ronan Modolo, Robert E. Johnson. A model of interaction of Phobos' surface with the martian environment. Icarus, Elsevier, 2011, 212 (2), pp.643-648. 〈10.1016/j.icarus.2011.01.036〉. 〈hal-00564917〉

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