Physics
Scientific paper
Aug 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010noao.prop..192t&link_type=abstract
NOAO Proposal ID #2010B-0192
Physics
Scientific paper
The majority of Near Earth Objects (NEOs) originated in collisions between bodies in the main asteroid belt and have found their way into near Earth space via complex and little understood dynamical interactions. This transport of material from the main belt into the inner Solar System has shaped the histories of the terrestrial planets. However, despite their scientific importance, key characteristics of the NEO population remain largely unexplored; some 99% of all presently known NEOs are essentially uncharacterized. We have an accepted Warm Spitzer Exploration Science Program (PI: Trilling) that allocates 500 hours of Spitzer time to observe ~700 NEOs. We will measure (1) the size distribution of this population; (2) the fraction of NEOs likely to be dead comets; (3) the albedo distribution of NEOs. We propose to gather spectroscopic data from a variety of telescopic facilities in order to physically characterize a significant subset of this Warm Spitzer NEO sample. By combining the size and albedo information from Spitzer with the compositional information from telescope spectroscopy we hope to shed light on several questions about the evolution and origin of the near-Earth asteroid population.
Delbo' Marco
Emery Joshua P.
Hora Joseph L.
Thomas Cristina A.
Trilling David Eric
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