TNOs are cool: a survey of the transneptunian region

Muller, Thomas G. and Lellouch, Emmanuel and Bohnhardt, Hermann and Stansberry, John and Barucci, Antonella and Crovisier, Jacques and Delsanti, Audrey and Doressoundiram, Alain and Dotto, Elisabetta and Duffard, Rene and Fornasier, Sonia and Groussin, Oliver and Gutierrez, Pedro J. and Hainaut, Olivier and Harris, Alan W. and Hartogh, Paul and Hestroffer, Daniel and Horner, Jonathan and Jewitt, Dave and Kidger, Mark and Kiss, Csaba and Lacerda, Pedro and Lara, Luisa and Lim, Tanya and Mueller, Michael and Moreno, Raphael and Ortiz, Jose-Luis and Rengel, Miriam and Santos-Sanz, Pablo and Swinyard, Bruce and Thomas, Nicolas and Thirouin, Audrey and Trilling, David (2009) TNOs are cool: a survey of the transneptunian region. Earth Moon and Planets, 105 (2-4). pp. 209-219. ISSN 0167-9295

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Abstract

Over one thousand objects have so far been discovered orbiting beyond Neptune. These trans-Neptunian objects (TNOs) represent the primitive remnants of the planetesimal disk from which the planets formed and are perhaps analogous to the 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 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 still largely unexplored. In particular, fundamental parameters such as size, albedo, density and thermal properties are difficult to measure. Measurements of thermal emission, which peaks at far-IR wavelengths, offer the best means available to determine the physical properties. While Spitzer has provided some results, notably revealing a large albedo diversity in this population, the increased sensitivity of Herschel and its superior wavelength coverage should 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © The Author(s) 2009. Open access This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. Presented during the conference 'Future Ground Based Solar System Research: Synergies with Space Probes and Space Telescopes', Portoferraio, Isola d'Elba, Livorno (Italy), September 8–12, 2008.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 21 Jul 2014 05:26
Last Modified: 24 Oct 2014 05:17
Uncontrolled Keywords: infrared; solar system; Kuiper Belt; photometric
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
04 Earth Sciences > 0401 Atmospheric Sciences > 040101 Atmospheric Aerosols
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1007/s11038-009-9307-x
URI: http://eprints.usq.edu.au/id/eprint/25542

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