(21) Lutetia spectrophotometry from Rosetta-OSIRIS images and comparison to ground-based observations

被引：28

作者：

Magrin, S. ^{[1
]}

La Forgia, F. ^{[1
]}

Pajola, M. ^{[2
]}

Lazzarin, M. ^{[1
]}

Massironi, M. ^{[2
,3
]}

Ferri, F. ^{[2
]}

Da Deppo, V. ^{[4
]}

Barbieri, C. ^{[1
]}

Sierks, H. ^{[5
]}

机构：

[1] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy

[2] Ctr Interdipartimentale Studi & Attivita Spaziali, I-35131 Padua, Italy

[3] Univ Padua, Dipartimento Geosci, I-35122 Padua, Italy

[4] CNR IFN UOS Padova LUXOR, I-35131 Padua, Italy

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

来源：

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

关键词：

Minor bodies; Lutetia; Rosetta; OSIRIS; Spectrophotometry; ASTEROID TARGET; 2867; STEINS; FLY-BY; MISSION; SURFACE; INHOMOGENEITIES; 21-LUTETIA;

D O I：

10.1016/j.pss.2011.10.001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Here we present some preliminary results on surface variegation found on (21) Lutetia from ROSETTA-OSIRIS images acquired on 2010-07-10. The spectrophotometry obtained by means of the two cameras NAC and WAC (Narrow and Wide Angle Cameras) is consistent with ground based observations, and does not show surface diversity above the data error bars. The blue and UV images (shortward 500 nm) may, however, indicate a variegation of the optical properties of the asteroid surface on the Baetica region (Sierks et al., 2011). We also speculate on the contribution due to different illumination and to different ground properties (composition or, more probably, grain size diversity). In particular a correlation with geologic units independently defined by Massironi et al. (2012) is evident, suggesting that the variegation of the ground optical properties is likely to be real. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：43 / 53

页数：11

共 15 条

[1] Rosetta asteroid targets: 2867 Steins and 21 Lutetia [J].