“TNOs are Cool”: A survey of the trans-Neptunian region XV. Physical 
characteristics of 23 resonant trans-Neptunian and scattered disk objects

Farkas-Takács, A.; Kiss, Cs.; Vilenius, Esa; Marton, G.; Müller, T. G.; Mommert, M.; Stansberry, J.; Lellouch, E.; Lacerda, P.; Pál, A.

doi:10.1051/0004-6361/201936183

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“TNOs are Cool”: A survey of the trans-Neptunian region XV. Physical characteristics of 23 resonant trans-Neptunian and scattered disk objects

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Vilenius, Esa
Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;

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Citation

Farkas-Takács, A., Kiss, C., Vilenius, E., Marton, G., Müller, T. G., Mommert, M., et al. (2020). “TNOs are Cool”: A survey of the trans-Neptunian region XV. Physical characteristics of 23 resonant trans-Neptunian and scattered disk objects. Astrophysics & Astronomy, 638: A23. doi:10.1051/0004-6361/201936183.

Cite as: https://hdl.handle.net/21.11116/0000-0006-D1DF-3

Abstract

The goal of this work is to determine the physical characteristics of resonant, detached and scattered disk objects in the trans-Neptunian region, observed mainly in the framework of the “TNOs are Cool” Herschel open time key programme. Based on thermal emission measurements with the Herschel/PACS and Spitzer/MIPS instruments, we determine size, albedo, and surface thermal properties for 23 objects using radiometric modeling techniques. This is the first analysis in which the physical properties of objects in the outer resonances are determined for a notable sample. In addition to the results for individual objects, we compared these characteristics with the bulk properties of other populations of the trans-Neptunian region. The newly analyzed objects show a large variety of beaming factors, indicating a diversity of thermal properties, and in general they follow the albedo-color clustering identified earlier for Kuiper belt objects and Centaurs, further strengthening the evidence for a compositional discontinuity in the young Solar System.