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TNOs are Cool: A Survey of the Trans-Neptunian Region I. Results from the Herschel Science Demonstration Phase (SDP)

Müller, Thomas and Lellouch, Emmanuel and Stansberry, John and Kiss, Csaba and Santos Sanz, Pablo and Vilenius, Esa and Protopapa, Silvia and Moreno, Raphael and Mueller, Michael and Delsanti, Audrey and Duffard, René D. and Fornasier, Sonia and Groussin, Olivier and Harris, Alan W. and Henry, Florence and Horner, Jonathan and Lacerda, Pedro and Lim, Tanya and Mommert, Michael and Ortiz Moreno, Jose Luis and Rengel, Miriam and Thirouin, Audrey and Trilling, David and Barucci, Antonella and Crovisier, Jacques and Doressoundiram, Alain and Dotto, Elisabetta and Gutierrez Buenestado, Pedro and Hainaut, Olivier and Hartogh, Paul and Hestroffer, Daniel and Kidger, Mark and Lara López, Luisa M. and Swinyard, Bruce and Thomas, Nicolas (2010) TNOs are Cool: A Survey of the Trans-Neptunian Region I. Results from the Herschel Science Demonstration Phase (SDP). Astronomy and Astrophysics, 518 (L146). EDP Sciences. DOI: 10.1051/0004-6361/201014683.

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Official URL: http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201014683&Itemid=129


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.

Document Type:Article
Title:TNOs are Cool: A Survey of the Trans-Neptunian Region I. Results from the Herschel Science Demonstration Phase (SDP)
AuthorsInstitution or Email of AuthorsAuthors ORCID
Müller, ThomasMPI für Extraterrestrische Physik, GermanyUNSPECIFIED
Lellouch, EmmanuelObservatoire de Paris-Meudon, FranceUNSPECIFIED
Stansberry, JohnUniversity of Arizona, USAUNSPECIFIED
Kiss, CsabaKonkoly Observatory, HungaryUNSPECIFIED
Santos Sanz, PabloObservatoire de Paris, FranceUNSPECIFIED
Vilenius, EsaMPI für Extraterrestrische Physik, GermanyUNSPECIFIED
Protopapa, SilviaMPI für Sonnensystemforschung, GermanyUNSPECIFIED
Moreno, RaphaelObservatoire de Paris-Meudon, FranceUNSPECIFIED
Mueller, MichaelObservatoire de la Côte d'AzurUNSPECIFIED
Delsanti, AudreyLab. d'Astrophysique de Marseille, FranceUNSPECIFIED
Duffard, René D.IAA-CSIC Granada, SpainUNSPECIFIED
Fornasier, SoniaObservatoire de Paris-Meudon, FranceUNSPECIFIED
Groussin, OlivierLab. d'Astrophysique de Marseille, FranceUNSPECIFIED
Harris, Alan W.alan.harris@dlr.deUNSPECIFIED
Henry, FlorenceObservatoire de Paris-Meudon, FranceUNSPECIFIED
Horner, JonathanOpen University, Milton Keynes, UKUNSPECIFIED
Lacerda, PedroQueen's University BelfastUNSPECIFIED
Mommert, Michaelmichael.mommert@dlr.deUNSPECIFIED
Ortiz Moreno, Jose LuisIAA-CSIC Granada, SpainUNSPECIFIED
Rengel, MiriamMPI für Sonnensystemforschung, GermanyUNSPECIFIED
Thirouin, AudreyIAA-CSIC Granada, SpainUNSPECIFIED
Trilling, DavidNorthern Arizona University, USAUNSPECIFIED
Barucci, AntonellaObservatoire de Paris-Meudon, FranceUNSPECIFIED
Crovisier, JacquesObservatoire de Paris-Meudon, FranceUNSPECIFIED
Doressoundiram, AlainObservatoire de Paris-Meudon, FranceUNSPECIFIED
Dotto, ElisabettaOsservatorio Astronomico di Roma, ItalyUNSPECIFIED
Gutierrez Buenestado, PedroIAA-CSIC Granada, SpainUNSPECIFIED
Hartogh, PaulMPI für Sonnensystemforschung, GermanyUNSPECIFIED
Hestroffer, DanielObservatoire de Paris, FranceUNSPECIFIED
Kidger, MarkESAC, Villafranca del Castillo, SpainUNSPECIFIED
Lara López, Luisa M.IAA-CSIC Granada, SpainUNSPECIFIED
Swinyard, BruceRAL Didcot, UKUNSPECIFIED
Thomas, NicolasUniversity of Bern, SwitzerlandUNSPECIFIED
Date:15 May 2010
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Publisher:EDP Sciences
Keywords:Kuiper belt: general / methods: observational / techniques: photometric / instrumentation: photometers / infrared: planetary systems
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
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)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Mommert, Michael
Deposited On:13 Oct 2010 12:45
Last Modified:19 Jul 2016 17:28

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