Visible and Near Infrared colors of Trans-neptunian Objects

Details Visible and Near Infrared colors of Trans-neptunian Objects Visible and Near Infrared colors of Trans-neptunian Objects

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.3902d&link_type=abstract

American Astronomical Society, DPS meeting #39, #39.02; Bulletin of the American Astronomical Society, Vol. 39, p.490

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Scientific paper

We present the latest results of the Meudon Multicolor survey (2MS). This survey aimed at characterizing the colors properties and trends of Centaurs and Trans-Neptunian Objects. We report IJHK photometry of objects obtained with CFHT-IR at the Canada-France-Hawaii 3.6-m Telescope (CFHT, Hawaii), JHK photometry with INGRID at the William Hershel 4.2-m Telescope (WHT, La Palma), and BVRI photometry with OIG at the Telescopio Nazionale Galileo 3.6-m Telescope (TNG, La Palma). Combined with our previous visible colors, we have obtained quasi simultaneous visible-near-infrared colors for 38 objects. This large sample allows an extended characterization of the colors properties of these primitive objects from the B (0.4 µm) to the K (2.2 µm) regime. Together with all the other infrared color published, we performed a detailed statistical analysis in order to search for significant trends. The most relevant conclusion about visible and near-IR color-color correlations is that, basically, JHK bands alone do not evidence correlations, neither between them nor with BVRIJ bands. Only Centaurs show an anti-correlation between visible colors and H-K. Colors within each dynamical family compare very similarly. All the results will be presented and discussed.
NP acknowledges funding from the European Social Fund and the Portuguese Foundation for Science and Technology (ref: BPD/18724/2004).

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