Photometry of TNOs and Centaurs in support of a Herschel Key Programme

Details Photometry of TNOs and Centaurs in support of a Herschel Key Programme Photometry of TNOs and Centaurs in support of a Herschel Key Programme

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..961p&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.961

Physics

Scientific paper

Trans-Neptunian Objects (TNOs) and Centaurs represent the remnants of the leftover planetesimals from the early accretional phases of the outer preplanetary disk, hence the study of their physical properties is fundamental to constrain the formation and evolution of the outer Solar System. In particular, the measure of TNOs' albedos and sizes requires combined visible and thermal observations. In support of the "TNOs are Cool" programme, currently ongoing at the Herschel space telescope, we performed at the TNG telescope visible photometry of 23 TNOs and Centaurs. We derive the absolute magnitude HV of the targets, a fundamental information to interpret the Herschel data. Moreover, the B-V, V-R, V-I colors give us a first indication about the targets' surface composition. Finally, we combine our results with the available literature, looking for correlations between colors and dynamical properties of TNOs and Centaurs.

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