We present here results on the preservation of organics in highly oxidized rock materials and clay layers drilled from 0-6m-depth (Borehole-7) under the Mars Analog Rio Tinto Experiment (MARTE). This simulated a Mars robotic drilling mission at the RioTinto (Spain)[2, 5]. The RT represents an important analog of the Sinus Meridiani Mars Site, and a...
A long-term adaptive optics (AO) campaign of observing the double Asteroid (90) Antiope has been carried out in 2003–2005 using 8–10-m class telescopes, allowing prediction of the circumstances of mutual events occurring during the July 2005 opposition [Marchis, F., Descamps, P., Hestroffer, D., Berthier, J., de Pater, I., 2004. Bull. Am. Astron. S...
Perets, Hagai B.Lederhendler, AdinaBiham, OferVidali, GianfrancoLi, LingSwords, SolCongiu, EmanueleJoe RoserManico, GiulioBrucato, John Robert
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Experimental results on the formation of molecular hydrogen on amorphous silicate surfaces are presented for the first time and analyzed using a rate equation model. The energy barriers for the relevant diffusion and desorption processes are obtained. They turn out to be significantly higher than those obtained earlier for polycrystalline silicates...
For hundreds of years, scientists have tracked the changing appearance of Mars, first by hand drawings and later by photographs 1, 2. Because of this historical record, many classical albedo patterns have long been known to shift in appearance over time. Decadal variations of the martian surface albedo are generally attributed to removal and deposi...
Bower, Geoffrey C.Bolatto, AlbertoFord, EricPaul KalasUlvestad, Jim
The extraordinary astrometric accuracy of radio interferometry creates an important and unique opportunity for the discovery and characterization of exo-planets. Currently, the Very Long Baseline Array can routinely achieve better than 100 microarcsecond accuracy, and can approach 10 microarcsecond with careful calibration. We describe here RIPL, t...
We have made a comprehensive transit search for exoplanets down to about 2 Earth radii in the HD 209458 system, based on nearly uninterrupted broadband optical photometry obtained with the MOST (Microvariability and Oscillations of Stars) satellite, spanning 14 days in 2004 and 44 days in 2005. We have searched these data for limb- darkened transit...
We present an extension of the spectral deconvolution method (Sparks & Ford 2002) to achieve very high contrast at small inner working radii. We apply the method to the specific case of ground based adaptive optics fed integral field spectroscopy (without a coronagraph). Utilising the wavelength dependence of the Airy and speckle patterns, we make ...