La caractérisation physique de la surface des astéroïdes proches de la Terre (Near Earth Objets, NEOs) est cruciale pour analyser les relations entre la population des NEOs et les autres populations de petits corps du Système Solaire (astéroïdes de la ceinture principale, comètes et météorites) et pour étudier l'origine des NEOs et leur évolution. La spectroscopie de reflectance nous donne un excellent outil pour déterminer plusieurs aspects de la composition de la surface des objets sans atmosphère. En particulier la photométrie et la spectroscopie dans un grand intervalle de longueurs d'onde (du visible a l'infrarouge) nous permettent de caractériser les matériaux présents sur la surface des NEOs et de classifier ces objets, en fonction de l'albédo et des caractéristiques du spectre observé.
The physical characterization of the surfaces of Near Earth Objects (NEOs) is crucial to analyse the relationships among NEOs and the other populations of minor bodies of the Solar System (main-belt asteroids, comets and meteorites) and to investigate NEO origin and evolution. Reflectance spectroscopy provides a powerful tool for determining several aspects of the surface composition of atmosphereless bodies. In particular, photometry and spectroscopy in a large wavelength interval (from visible to far-infrared) allow us to characterize the materials present on the surfaces of NEOs and to classify them, depending on the albedo values and the observed spectral behaviour.
Mots clés : Astéroïdes proches de la Terre, Spectroscopie de reflectance, Albédo
Elisabetta Dotto 1 ; M. Antonietta Barucci 2 ; Richard P. Binzel 3 ; Marco Delbó 4
@article{CRPHYS_2005__6_3_303_0, author = {Elisabetta Dotto and M. Antonietta Barucci and Richard P. Binzel and Marco Delb\'o}, title = {Surface compositions of {NEOs}}, journal = {Comptes Rendus. Physique}, pages = {303--312}, publisher = {Elsevier}, volume = {6}, number = {3}, year = {2005}, doi = {10.1016/j.crhy.2004.12.015}, language = {en}, }
Elisabetta Dotto; M. Antonietta Barucci; Richard P. Binzel; Marco Delbó. Surface compositions of NEOs. Comptes Rendus. Physique, Volume 6 (2005) no. 3, pp. 303-312. doi : 10.1016/j.crhy.2004.12.015. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2004.12.015/
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