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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 226054.0, MPI für Astronomie / Publikationen_mpia
Surface characterization of 28978 Ixion (2001 KX76)
Authors:Boehnhardt, H.; Bagnulo, S.; Muinonen, K.; Barucci, M. A.; Kolokolova, L.; Dotto, E.; Tozzi, G. P.
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Astronomy and Astrophysics
Start Page:L21
End Page:L25
Review Status:not specified
Audience:Not Specified
Abstract / Description:The Plutino 28978 Ixion, one of the largest
objects in the Kuiper Belt, is measured by R
filter photometry and linear polarimetry over the
phase angle range as well as by BVRI colours and
visible spectroscopy. Ixion is a medium red
object with spectral slope of 17.7%/100 nm
(400-900 nm). While its opposition phase curve
surge (0.2 mag/deg) is within the typical range
found for other solar system objects, it displays
unusually high negative polarization (min.
-1.3%). Comparison with model spectra and
numerical modeling of the opposition brightening
and polarization effects suggest an areal
mixture of absorbing (dark) and icy (bright)
compounds on its surface: the mixing ratio is
about 6:1 for dark and bright material of 0.21
and 0.79 single-scattering albedo and of 250 and
33 dimensionless mean free path (length
multiplied by wave number), respectively.
Free Keywords:transneptunian object; 28978 Ixion: 2001 KX$_{76
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:Königstuhl 17, 69117 Heidelberg, Germany),
AB(European Southern Observatory, Alonso de
Cordova 3107, Santiago de Chile), AC(Observatory,
PO Box 14, 00014 University of Helsinki,
Finland), AD(Observatoire Paris-Meudon, 5 place
Jules Janssen, 92195 Meudon Cedex, France),
AE(Department of Astronomy, 211 SSRB, University
of Florida, Gainesville, FL 32611-2055, USA),
AF(INAF - Osservatorio Astronomico di Roma, via
Frascati 33, 00040 Monteporzio Catone, Italy),
AG(INAF - Osservatorio Astrofisico di Arcetri,
Largo E. Fermi 5, 50125 Firenze, Italy)
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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