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Abstract: The study of the surface properties of Centaurs and Trans-Neptunian ObjectsTNOs provides essential information about the early conditions and evolutionof the outer Solar System. Due to the faintness of most of these distant andicy bodies, photometry currently constitutes the best technique to survey astatistically significant number of them. Our aim is to investigate colorproperties of a large sample of minor bodies of the outer Solar System, and settheir taxonomic classification. We carried out visible and near-infraredphotometry of Centaurs and TNOs, making use, respectively, of the FORS2 andISAAC instruments at the Very Large Telescope European Southern Observatory.Using G-mode analysis, we derived taxonomic classifications according to theBarucci et al. 2005a system. We report photometric observations of 31objects, 10 of them have their colors reported for the first time ever. 28Centaurs and TNOs have been assigned to a taxon. We combined the entire sampleof 38 objects taxonomically classified in the framework of our programme 28objects from this work; 10 objects from DeMeo et al. 2009a with previouslyclassified TNOs and Centaurs, looking for correlations between taxonomy anddynamics. We compared our photometric results to literature data, finding hintsof heterogeneity for the surfaces of 4 objects.



Author: D. Perna, M. A. Barucci, S. Fornasier, F. E. DeMeo, A. Alvarez-Candal, F. Merlin, E. Dotto, A. Doressoundiram, C. de Bergh

Source: https://arxiv.org/



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