The Fraction of KBO Contact Binaries

Details The Fraction of KBO Contact Binaries The Fraction of KBO Contact Binaries

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.4204l&link_type=abstract

American Astronomical Society Meeting 210, #42.04; Bulletin of the American Astronomical Society, Vol. 39, p.156

Astronomy and Astrophysics

Astronomy

Scientific paper

We use Roche binary models to improve previous estimates of the contact binariy fraction within the Kuiper Belt object (KBO) population (Sheppard & Jewitt 2004). Our simulations can be used to determine the lightcurve range of Roche binaries at arbitrary observing geometries, and for different surface types. This allows us to better correct the apparent fraction for observing geometry effects. We find that at least 9% of KBOs are contact binaries. Such high incidence of KBOs contact binaries has important implications to binary formation and collisional evolution scenarios.
PL is grateful to the Portuguese Fundacao para a Ciencia e a Tecnologia (BPD/SPFH/18828/2004) for financial support. This work was supported, in part, by a grant from the NSF to David C. Jewitt.

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