ESO Large Programme on trans-Neptunian objects and Centaurs:: Spectroscopic investigation of Centaur 2001 BL41 and TNOs (26181) 1996 GQ21 and (26375) 1999 DE9

被引:35
作者
Doressoundiram, A [1 ]
Tozzi, GP
Barucci, MA
Boehnhardt, H
Fornasier, S
Romon, J
机构
[1] Observ Paris, Lab Etud Spatiales & Instumentat Astrophys, F-92195 Meudon, France
[2] Ist Nazl Fis Nucl, Osservatorio Astrofis Arcetri, I-50125 Florence, Italy
[3] Max Planck Inst Astron, D-69117 Heidelberg, Germany
[4] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy
[5] European So Observ, Paranal, Chile
关键词
Kuiper belt; minor planets; asteroids; techniques : photometric; techniques : spectroscopic;
D O I
10.1086/374632
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Observational results that are part of an ESO Large Programme dedicated to the characterization of the physical properties of trans-Neptunian objects and Centaurs are presented. We report observations related to the Centaur 2001 BL41 and two trans-Neptunian objects, (26181) 1996 GQ(21) and (26375) 1999 DE9. We present results from broadband photometry (JHK filters) and low-dispersion infrared spectroscopy performed with ISAAC at the Very Large Telescope, in Chile. None of the spectra show evidence of absorption features-in particular, water ice features. We use a radiative transfer model to investigate the surface composition of these icy and primitive outer solar system bodies. We suggest models composed of geographical mixtures of organic compounds and minerals.
引用
收藏
页码:2721 / 2727
页数:7
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