Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.6402f&link_type=abstract
American Astronomical Society, DPS meeting #39, #64.02; Bulletin of the American Astronomical Society, Vol. 39, p.545
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of a Trans-Neptunian Object (TNO) search based on data taken with Subaru by Sheppard et al. (2005) in search of irregular moons of Uranus. Our survey is complete to magnitude R = 25.6 and covers about 2.8 deg2 around Uranus at opposition. From 92 objects detected 82 correspond to TNOs. We present the Number Cumulative Function for the detected objects. Fitting the shape of the cumulative function with a single power law model gives a best fit with 1 object per square degree at R = 22.8 and a slope of 0.59, inconsistent with similar searches with shallower limiting magnitudes. A double power law gives a much better fit to the data with a clear break of the distribution at R = 25, a bayesian analysis supports this result. We found a lack of a significant number of detections at distances > 50 AU. We conclude that this is evidence for a break in the distance distribution of the Kuiper Belt at that distance.
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