Col-OSSOS: color and inclination are correlated throughout the Kuiper Belt

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.3847/1538-3881/aaf72e
Auteur	Rechercher : Marsset, Michaël Identifiant ORCID : https://orcid.org/0000-0001-8617-2425; Rechercher : Fraser, Wesley C.¹Identifiant ORCID : https://orcid.org/0000-0001-6680-6558; Rechercher : Pike, Rosemary E.Identifiant ORCID : https://orcid.org/0000-0003-4797-5262; Rechercher : Bannister, Michele T.¹Identifiant ORCID : https://orcid.org/0000-0003-3257-4490; Rechercher : Schwamb, Megan E.Identifiant ORCID : https://orcid.org/0000-0003-4365-1455; Rechercher : Volk, Kathryn Identifiant ORCID : https://orcid.org/0000-0001-8736-236X; Rechercher : Kavelaars, J. J.¹Identifiant ORCID : https://orcid.org/0000-0001-7032-5255; Rechercher : Alexandersen, Mike Identifiant ORCID : https://orcid.org/0000-0003-4143-8589; Rechercher : Chen, Ying-Tung Identifiant ORCID : https://orcid.org/0000-0001-7244-6069; Rechercher : Gladman, Brett J.; Rechercher : Gwyn, Stephen D. J.¹; Rechercher : Lehner, Matthew J.Identifiant ORCID : https://orcid.org/0000-0003-4077-0985; Rechercher : Peixinho, Nuno Identifiant ORCID : https://orcid.org/0000-0002-6830-476X; Rechercher : Petit, Jean-Marc Identifiant ORCID : https://orcid.org/0000-0003-0407-2266; Rechercher : Wang, Shiang-Yu
Affiliation	Conseil national de recherches du Canada. Herzberg en astronomie et en astrophysique
Format	Texte, Article
Sujet	Kuiper belt: general; minor planets, asteroids: general; surveys
Résumé	Both physical and dynamical properties must be considered to constrain the origins of the dynamically excited distant solar system populations. We present high-precision (g-r) colors for 25 small (H ᵣ > 5) dynamically excited trans-Neptunian objects (TNOs) and centaurs acquired as part of the Colours of the Outer Solar System Origins Survey. We combine our data set with previously published measurements and consider a set of 229 colors of outer solar system objects on dynamically excited orbits. The overall color distribution is bimodal and can be decomposed into two distinct classes, termed gray and red, that each has a normal color distribution. The two color classes have different inclination distributions: red objects have lower inclinations than the gray ones. This trend holds for all dynamically excited TNO populations. Even in the worst-case scenario, biases in the discovery surveys cannot account for this trend; it is intrinsic to the TNO population. Considering that TNOs are the precursors of centaurs, and that their inclinations are roughly preserved as they become centaurs, our finding solves the conundrum of centaurs being the only outer solar system population identified so far to exhibit this property. The different orbital distributions of the gray and red dynamically excited TNOs provide strong evidence that their colors are due to different formation locations in a disk of planetesimals with a compositional gradient.
Date de publication	2019-02-04
Maison d’édition	IOP American Astronomical Society
Licence	Creative Commons Attribution 3.0 non transposé (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/deed.fr
Dans	The Astronomical Journal 157, nº 3, 94 : 1–17.
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	ee3c1d71-f951-484e-94de-29aff24d399e
Enregistrement créé	2020-11-23
Enregistrement modifié	2020-12-24

Date de modification :: 2024-06-29