TNOs are cool: a survey of the trans-Neptunian region: I. results from the Herschel science demonstration phase (SDP) [Letter to the editor]
Article
Article Title | TNOs are cool: a survey of the trans-Neptunian region: I. results from the Herschel science demonstration phase (SDP) [Letter to the editor] |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Muller, T. G. (Author) and Horner, J. (Author) |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 518 (2), p. L146 |
Number of Pages | 5 |
Year | 2010 |
Publisher | EDP Sciences |
Place of Publication | Les Ulis, France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/201014683 |
Abstract | The goal of the Herschel open time key programme 'TNOs are Cool!' is to derive the physical and thermal properties for a large sample of Centaurs and trans-Neptunian objects (TNOs), including resonant, classical, detached and scattered disk objects. We present results for seven targets either observed in PACS point-source, or in mini scan-map mode. Spitzer-MIPS observations were included for three objects. The sizes of these targets range from 100 km to almost 1000 km, five have low geometric albedos below 10%, (145480) 2005 TB190 has a higher albedo above 15%. Classical thermal models driven by an intermediate beaming factor of η = 1.2 or η-values adjusted to the observed colour temperature fit the multi-band observations well in most cases. More sophisticated thermophysical models give very similar diameter and albedo values for thermal inertias in the range 0-25 J m-2 s-0.5 K-1, consistent with very low heat conductivities at temperatures far away from the Sun. The early experience with observing and model strategies will allow us to derive physical and thermal properties for our complete Herschel TNO sample of 140 targets as a benchmark for understanding the solar system debris disk, and extra-solar ones as well. |
Keywords | Kuiper belt; observational techniques: photometric instrumentation; photometers; infrared; planetary systems |
ANZSRC Field of Research 2020 | 400909. Photonic and electro-optical devices, sensors and systems (excl. communications) |
519999. Other physical sciences not elsewhere classified | |
Public Notes | Copyright ESO 2010. 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. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Max Planck Society, Germany |
Durham University, United Kingdom |
https://research.usq.edu.au/item/q27y6/tnos-are-cool-a-survey-of-the-trans-neptunian-region-i-results-from-the-herschel-science-demonstration-phase-sdp-letter-to-the-editor
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