Surface composition of TNOs and Centaurs: visible and near-infrared spectroscopy

Elisabetta Dotto; M.Antonietta Barucci; Catherine de Bergh

doi:10.1016/j.crhy.2003.09.011

Surface composition of TNOs and Centaurs: visible and near-infrared spectroscopy
[Composition de surface des Objets Transneptuniens et des Centaures : spectroscopie visible et infrarouge proche]

Présenté par : Pierre Encrenaz

Elisabetta Dotto ¹ ; M.Antonietta Barucci ² ; Catherine de Bergh ²

¹ INAF-osservatorio Astronomico di Roma, Via Frascati 33, 00040 Roma, Italy
² LESIA-observatoire de Paris, 92195 Meudon Principal cedex, France

Comptes Rendus. Physique, new frontiers in the solar system: trans-neptunian objects, Volume 4 (2003) no. 7, pp. 775-782.

Résumé
Abstract

La spectroscopie dans les domaines du visible et de l'infrarouge proche est la méthode la plus couramment utilisée pour explorer la composition de surface de corps sans atmosphère. Cependant, la faible luminosité intrinsèque des Objets Transneptuniens (OTN) et des Centaures induit de fortes contraintes observationnelles, et l'échantillon d'informations disponibles sur ces objets est encore très restreint. Des spectres dans le visible et dans l'infrarouge proche, aussi bien que des modèles de composition de surface, n'existent aujourd'hui que pour environ 15 objets parmi les Objets Transneptuniens et les Centaures. La propriété la plus évidente est la grande diversité de caractéristiques spectrales, physiques et compositionnelles. Ceci pose des questions non encore résolues sur l'origine et les premiers stades de l'évolution de ces petits corps.

Visible and near-infrared spectroscopy is the most effective technique to investigate the surface composition of atmosphereless bodies. However, the intrinsic faintness of Trans-Neptunian Objects (TNOs) and Centaurs imposes strong observational limits, and the sample of available information on these objects is still rather limited. Visible and near-infrared spectra, as well as models of the surface compositions, are today available only for about fifteen objects among TNOs and Centaurs. The most evident property is the huge variety of spectral features, physical characteristics, and compositions. This poses still unanswered questions about the origin and the early evolution of these small bodies.

Publié le : 2003-09-01

DOI : 10.1016/j.crhy.2003.09.011

Keywords: TNO, Centaurs, Visible spectroscopy, Near-infrared spectroscopy
Mots-clés : OTN, Centaures, Spectroscopie visible, Spectroscopie infrarouge proche

Affiliations des auteurs :

Elisabetta Dotto ¹ ; M.Antonietta Barucci ² ; Catherine de Bergh ²

¹ INAF-osservatorio Astronomico di Roma, Via Frascati 33, 00040 Roma, Italy
² LESIA-observatoire de Paris, 92195 Meudon Principal cedex, France

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     title = {Surface composition of {TNOs} and {Centaurs:} visible and near-infrared spectroscopy},
     journal = {Comptes Rendus. Physique},
     pages = {775--782},
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     number = {7},
     year = {2003},
     doi = {10.1016/j.crhy.2003.09.011},
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}

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Elisabetta Dotto; M.Antonietta Barucci; Catherine de Bergh. Surface composition of TNOs and Centaurs: visible and near-infrared spectroscopy. Comptes Rendus. Physique, new frontiers in the solar system: trans-neptunian objects, Volume 4 (2003) no. 7, pp. 775-782. doi : 10.1016/j.crhy.2003.09.011. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2003.09.011/

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