Composition of KBO (50000) Quaoar

Details Composition of KBO (50000) Quaoar Composition of KBO (50000) Quaoar

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21440205d&link_type=abstract

American Astronomical Society, AAS Meeting #214, #402.05; Bulletin of the American Astronomical Society, Vol. 41, p.663

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a study of the surface composition of (50000) Quaoar, a classical Transneptunian (or Kuiper Belt) object. Because of its distance from the Sun, Quaoar is expected to have preserved, to a degree, its original composition. Our goal is to shed light on the chemical evolution of this icy body.
We present new near-infrared (3.6 and 4.5μm) photometric data obtained with the Spitzer Space Telescope.
These data complement high resolution, low signal-to-noise spectroscopic and photometric data obtained in the visible and near-infrared (0.4-2.3μm) at VLT-ESO and provide an excellent set of constraints in the model calculation process.
We perform spectral modeling of the entire wavelength range -from 0.3 to 4.5μm- by means of a code based on the Shkuratov radiative transfer formulation of the slab model.
We also attempt to determine the temperature of H2O ice making use of the crystalline feature at 1.65μm.

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