Mathematics – Logic
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.3404b&link_type=abstract
American Astronomical Society, DPS meeting #41, #34.04
Mathematics
Logic
Scientific paper
Various colorimetric and spectroscopic studies of asteroid families have led to the realization that within each family, members tend to share similar spectral reflectance characteristics. This finding is contrary to what was previously expected, in which the collisional formation of an asteroid family might reveal different lithologic components from the interior of a differentiated parent body. The observed spectral homogeneity within families may result from the catastrophic nature of collisions between asteroids, and can be exploited for reexamining asteroid families as clusters in both orbital element and spectral parameter spaces. Here I report on an ongoing project focused on the concept of spectro-dynamical families, which utilizes data from the first and second phases of the Small Mainbelt Asteroid Spectroscopic Survey (SMASS, Xu et al. 1995, Bus and Binzel 2002), the Small Solar System Object Spectroscopic Survey (S3OS2, Lazzaro et al. 2004), and the third release of the Sloan Digital Sky Survey Moving Object Catalog (Ivezic 2005). Using a combination of clustering techniques, these asteroid data have been merged with proper orbital elements to refine the boundaries and memberships of previously known families, identify interlopers, and search for older, more diffuse asteroid groupings that had not been previously recognized. Final family identifications, along with spectral (taxonomic) results will be presented.
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