Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.3809d&link_type=abstract
American Astronomical Society, DPS meeting #40, #38.09; Bulletin of the American Astronomical Society, Vol. 40, p.465
Astronomy and Astrophysics
Astronomy
Scientific paper
Determination of the outer Solar System composition can be a key tool in assessing the chemical and dynamical evolution of the primordial Solar System. Several processes have affected such evolution: from gravitational perturbations to space weathering, what we observe today is the outcome of a combination of circumstances that have aged the surface of Kuiper Belt, Centaur and Trojan objects as a function of both time and location. Uncoupling the impact of dynamical and chemical evolution is a difficult task requiring a large and consistent body of observations. We have used the Spitzer Space Telescope to measure broadband reflectances of 22 KBOs, 13 Centaurs and 20 Trojan asteroids at 3.6 and 4.5 microns. When combined with shorter wavelength reflectance data, these new measurements are a crucial step toward understanding the compositions of outer Solar System bodies. We present the current status of the survey as well as a quantitative way to analyze the data in an effort to evaluate its potential as well as its limitations to shed light on the problem.
Cruikshank Dale P.
Dalle Ore Cristina Morea
Emery Joshua P.
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