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Unbiased Inclination Distributions for Objects in the Kuiper Belt

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dc.contributor.author Gulbis, Amanda A. S.
dc.contributor.author Elliot, James L.
dc.contributor.author Adams, Elisabeth Rose
dc.contributor.author Benecchi, Susan D.
dc.contributor.author Buie, Marc W.
dc.contributor.author Trilling, David E.
dc.contributor.author Wasserman, L. H.
dc.date.accessioned 2012-10-03T20:38:27Z
dc.date.available 2012-10-03T20:38:27Z
dc.date.issued 2009-07
dc.date.submitted 2010-06
dc.identifier.issn 0004-6256
dc.identifier.issn 1538-3881
dc.identifier.uri http://hdl.handle.net/1721.1/73580
dc.description.abstract Using data from the Deep Ecliptic Survey (DES), we investigate the inclination distributions of objects in the Kuiper Belt. We present a derivation for observational bias removal and use this procedure to generate unbiased inclination distributions for Kuiper Belt objects (KBOs) of different DES dynamical classes, with respect to the Kuiper Belt plane. Consistent with previous results, we find that the inclination distribution for all DES KBOs is well fit by the sum of two Gaussians, or a Gaussian plus a generalized Lorentzian, multiplied by sin i. Approximately 80% of KBOs are in the high-inclination grouping. We find that Classical object inclinations are well fit by sin i multiplied by the sum of two Gaussians, with roughly even distribution between Gaussians of widths 2.0[superscript +0.6] [subscript –0.5°] and 8.1[superscript +2.6] [subscript –2.1°]. Objects in different resonances exhibit different inclination distributions. The inclinations of Scattered objects are best matched by sin i multiplied by a single Gaussian that is centered at 19.1[superscript +3.9] [subscript –3.6°] with a width of 6.9[superscript +4.1] [subscript –2.7°]. Centaur inclinations peak just below 20°, with one exceptionally high-inclination object near 80°. The currently observed inclination distribution of the Centaurs is not dissimilar to that of the Scattered Extended KBOs and Jupiter-family comets, but is significantly different from the Classical and Resonant KBOs. While the sample sizes of some dynamical classes are still small, these results should begin to serve as a critical diagnostic for models of solar system evolution. en_US
dc.description.sponsorship National Science Foundation (U.S.) (Grant AST 07–07609) en_US
dc.language.iso en_US
dc.publisher IOP Publishing en_US
dc.relation.isversionof http://dx.doi.org/10.1088/0004-6256/140/2/350 en_US
dc.rights Creative Commons Attribution-Noncommercial-Share Alike 3.0 en_US
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/ en_US
dc.source arXiv en_US
dc.title Unbiased Inclination Distributions for Objects in the Kuiper Belt en_US
dc.type Article en_US
dc.identifier.citation Gulbis, A. A. S. et al. “Unbiased Inclination Distributions for Objects in the Kuiper Belt.” The Astronomical Journal 140.2 (2010): 350–369. en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Physics en_US
dc.contributor.mitauthor Gulbis, Amanda A. S.
dc.contributor.mitauthor Elliot, James L.
dc.contributor.mitauthor Adams, Elisabeth Rose
dc.relation.journal Astronomical Journal en_US
dc.identifier.mitlicense OPEN_ACCESS_POLICY en_US
dc.eprint.version Author's final manuscript en_US
dc.type.uri http://purl.org/eprint/type/JournalArticle en_US
eprint.status http://purl.org/eprint/status/PeerReviewed en_US
dspace.orderedauthors Gulbis, A. A. S.; Elliot, J. L.; Adams, E. R.; Benecchi, S. D.; Buie, M. W.; Trilling, D. E.; Wasserman, L. H. en


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