Maria Cristina De Sanctis

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We present global lithological maps of the Vestan surface based on Dawn mission’s Visible InfraRed (VIR) Spectrometer acquisitions with a spatial sampling of 200 m. The maps confirm the results obtained with the data set acquired by VIR with a spatial sampling of 700 m, that the reflectance spectra of Vesta’s surface are dominated by pyroxene absorptions(More)
The Dawn mission was designed to test our hypothesis about the origin and evolution of the early solar system by visiting the largest differentiated basaltic asteroid, 4 Vesta, believed to be a survivor from the earliest times of rocky body formation. Observations from orbit show that Vesta is the parent body of the Howardite, Eucrite, Diogenite meteorites.(More)
The Dawn spacecraft mission has provided extensive new and detailed data on Vesta that confirm and strengthen the Vesta–howardite–eucrite–diogenite (HED) meteorite link and the concept that Vesta is differentiated, as derived from earlier telescopic observations. Here, we present results derived by newly calibrated spectra of Vesta. The comparison between(More)
Exposure to ion and micrometeoroid bombardment in the space environment causes physical and chemical changes in the surface of an airless planetary body. These changes, called space weathering, can strongly influence a surface’s optical characteristics, and hence complicate interpretation of composition from reflectance spectroscopy. Prior work using data(More)
The capability of spaceborne VIS-NIR imaging spectrometers devoted to planetary exploration to acquire valuable scientific datasets largely depends on the accuracy of the calibration pipeline. In this paper we discuss about the method currently used to calibrate the flight data of VIRTISM (Visible InfraRed Thermal Imaging Spectrometer, Mapping Channel) on(More)
We used Dawn spacecraft data to identify and delineate geological units and landforms in the Marcia quadrangle of Vesta as a means to assess the role of the large, relatively young impact craters Marcia ( 63 km diam.) and Calpurnia ( 53 km diam.) and their surrounding ejecta field on the local geology. We also investigated a local topographic high with a(More)
Spin-forbidden pyroxene absorptions, detected in the visible wavelength range of the spectral data acquired of asteroid 4Vesta by the Visible and Infrared (VIR) Spectrometer onboard the Dawn spacecraft [1,2], provide valuable complementary information of the asteroidal surface composition. They can be used to verify the link of Vesta's surface composition(More)
39 We describe the contributions that we expect the BepiColombo mission to make 40 towards increased knowledge and understanding of Mercury’s surface and 41 composition. BepiColombo will have a larger and more capable suite of instruments 42 relevant for determination of the topographic, physical, chemical and mineralogical 43 properties of the surface than(More)
VIHI (Visible and Infrared Hyperspectral Imager) is one of the three optical heads in the SIMBIO-SYS experiment onboard BepiColombo mission (the other two being STC, Stereo Camera, and HRIC, High Resolution Image Camera) [1]. The payload is designed to scan the Hermean surface from a polar orbit with the three channels to map the physical, morphological,(More)
39 We describe the contributions that we expect the BepiColombo mission to make 40 towards increased knowledge and understanding of Mercury’s surface and 41 composition. BepiColombo will have a larger and more capable suite of instruments 42 relevant for determination of the topographic, physical, chemical and mineralogical 43 properties of the surface than(More)