Herschel Open Time Key Programme: TNOs are cool: a survey of the Transneptunian Region
Müller, T.G. and Lellouch, E. and Böhnhardt, H and Stansberry, J. and Barucci, A and Crovisier, J. and Delsanti, A. and Doressoundiram, A. and Dotto, E. and Duffard, R. and Fornasier, S. and Groussin, O and Gutierrez, P.J. and Hainaut, O. and Harris, A.W. and Hartogh, P. and Hestroffer, D. and Horner, J. and Jewitt, D. and Kidger, M. and Kiss, C. and Lacerda, P. and Lara, L. and Lim, T and Mueller, M. and Moreno, R. and Ortiz, J.-L. and Rengel, M. and Santos-Sanz, P. and Swinyard, B. and Thomas, N. and Trilling, D. (2009) Herschel Open Time Key Programme: TNOs are cool: a survey of the Transneptunian Region. Icy Bodies in the Solar System, 03 Aug - 07 Aug 2009, Rio de Janeiro, Brazil.
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Over one thousand objects have been discovered orbiting beyond Neptune. These trans-Neptunian objects (TNOs) represent the primitive remnants of the planetesimal disk from which the outer planets formed, and is an analog for unseen dust parent bodies in debris disks observed around other main-sequence stars. The dynamical and physical properties of these bodies provide unique and important constraints on formation and evolution models of the outer Solar System. While the dynamical architecture in this region (also known as the Kuiper Belt) is becoming relatively clear, the physical properties of the objects are only beginning to be revealed. In particular, fundamental parameters such as size, albedo, density and thermal properties are difficult to measure. Measurements of their thermal emission, which peaks at far-IR wavelengths, offer the best means available to determine those physical properties. While Spitzer has provided the first results, notably revealing a large albedo diversity in this population, the increased sensitivity of Herschel and its wavelength coverage will permit profound advances in the field. Within our accepted project we propose to perform radiometric measurements of 139 objects, including 25 known multiple systems. When combined with measurements of the dust population beyond Neptune (e.g. from the New Horizons mission to Pluto), our results will provide a benchmark for understanding the Solar debris disk, and extra-solar ones as well.
|Document Type:||Conference or Workshop Item (Poster)|
|Title:||Herschel Open Time Key Programme: TNOs are cool: a survey of the Transneptunian Region|
|In ISI Web of Science:||No|
|Keywords:||Trans-Neptunian objects, Herschel Space Telescope, thermal emission|
|Event Title:||Icy Bodies in the Solar System|
|Event Location:||Rio de Janeiro, Brazil|
|Event Type:||international Conference|
|Event Dates:||03 Aug - 07 Aug 2009|
|Organizer:||International Astronomical Union|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Asteroiden und Kometen (old)|
|Institutes and Institutions:||Institute of Planetary Research > Asteroids and Comets|
|Deposited By:||Prof. Alan Harris|
|Deposited On:||09 Nov 2009 12:25|
|Last Modified:||09 Nov 2009 12:25|
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