Geodesy constraints on the interior structure and composition of Mars

A. Rivoldini (1) , T. van Hoolst (1) , O. Verhoeven (2) , A. Mocquet (2) , V. Dehant (1)

1 ROB - Royal Observatory of Belgium = Observatoire Royal de Belgique
2 CNRS - Centre National de la Recherche Scientifique

► Geodesy data constraint the interior structure and composition of Mars. ► Geodesy data imply that Mars has no inner core. ► The radius of the liquid core is 1794+/-65km. ► The core sulfur concentration is 16+/-2wt% if sulfur is the only light element in the core. ► Interior structure models with a chondritic Fe/Si ratio are consistent with the data.

Mots clés: Mars; Interiors; Geodesy; Solid body tides

Domaines: Planète et Univers [physics]

A. Rivoldini, T. van Hoolst, O. Verhoeven, A. Mocquet, V. Dehant. Geodesy constraints on the interior structure and composition of Mars. Icarus, 2011, 213 (2), pp.451. ⟨10.1016/j.icarus.2011.03.024⟩. ⟨hal-00756913⟩