Overview of Lutetia's surface composition

被引：23

作者：

Barucci, M. A. ^{[1
]}

Belskaya, I. N. ^{[1
,2
]}

Fornasier, S. ^{[1
,3
]}

Fulchignoni, M. ^{[1
,3
]}

Clark, B. E. ^{[4
]}

Coradini, A. ^{[5
]}

Capaccioni, F. ^{[6
]}

Dotto, E. ^{[7
]}

Birlan, M. ^{[8
]}

Leyrat, C. ^{[1
]}

Sierks, H. ^{[9
]}

Thomas, N. ^{[10
]}

Vincent, J. B. ^{[9
]}

机构：

[1] Univ Paris 06, LESIA Observ Paris, CNRS, F-92195 Meudon, France

[2] Kharkov Natl Univ, Inst Astron, UA-61022 Kharkov, Ukraine

[3] Univ Paris Diderot, F-75205 Paris, France

[4] Ithaca Coll, Dept Phys, Ithaca, NY 14850 USA

[5] Ist Fis Spazio InterplanetarioINAF, Rome, Italy

[6] Ist Astrofis Spaziale & Fis Cosm INAF, Rome, Italy

[7] Osservatorio Astron Roma INAF, Rome, Italy

[8] Observ Paris, IMCCE, F-75014 Paris, France

[9] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany

[10] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland

来源：

PLANETARY AND SPACE SCIENCE | 2012年 / 66卷 / 01期

基金：

美国国家科学基金会;

关键词：

Rosetta; Lutetia; Asteroids; Composition; Chondrites; ASTEROID; 21; LUTETIA; MAIN-BELT; NEGATIVE POLARIZATION; SPECTRAL PROPERTIES; METEORITE SPECTRA; ROSETTA MISSION; TARGET; 21-LUTETIA; SPECTROSCOPY; CHONDRITES;

D O I：

10.1016/j.pss.2011.11.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

All available data regarding compositionally diagnostic measurements of asteroid (21) Lutetia are assembled. We review ground-based observations together with recent spacecraft mission (Rosetta. Herschel and Spitzer) measurements. The aim of this paper is to gather all the pieces of the Lutetia puzzle, in order to derive the most probable surface composition interpretation. During the flyby Rosetta observed only the northern hemisphere where OSIRIS imaging system found albedo variations of up to 30%. From our analyses of all the available data, taken at different aspect angles, variations on Lutetia's surface are inferred to be due to compositional and morphological differences (at macro and micro scales). We conclude that Lutetia has a chondritic surface, possibly composed of mixtures of "incompatible" types of materials: carbonaceous and enstatite chondrites. Finding these materials juxtaposed could be the consequence of large impacts that created the present surface. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：23 / 30

页数：8

共 61 条

[1] Asteroids 2867 Steins and 21 Lutetia: surface composition from far infrared observations with the Spitzer space telescope [J].