Fig. 1: The correlation between gravity and gravity from shape, and effective density.
From: A small core in Vesta inferred from Dawn’s observations
a. The correlation between gravity and gravity from shape is shown as a function of spherical harmonic degree (n). The black line is the central value and the orange shading corresponds to 1σ of the correlation. b. The effective density spectrum of Vesta as a function of the spherical harmonic degree is shown. The black line is the central value and the orange shading corresponds to 1σ of the effective density (see equation (24)). The purple curve indicates the best-fit model calculated using equation (22). The shape model is assumed to be errorless, as its accuracy is known to be substantially better than that of the gravity field. The dashed blue curves show the modelled effective crustal density (ρcrust) spectra for a crustal thickness of 50 km, mantle density of 4,000 kg m−3 and a range of crustal densities.
