Variations in color and reflectance on the surface of asteroid (101955) Bennu.
Journal
Science (New York, N.Y.)
ISSN: 1095-9203
Titre abrégé: Science
Pays: United States
ID NLM: 0404511
Informations de publication
Date de publication:
06 11 2020
06 11 2020
Historique:
received:
21
04
2020
accepted:
24
09
2020
pubmed:
10
10
2020
medline:
10
10
2020
entrez:
9
10
2020
Statut:
ppublish
Résumé
Visible-wavelength color and reflectance provide information about the geologic history of planetary surfaces. Here we present multispectral images (0.44 to 0.89 micrometers) of near-Earth asteroid (101955) Bennu. The surface has variable colors overlain on a moderately blue global terrain. Two primary boulder types are distinguishable by their reflectance and texture. Space weathering of Bennu surface materials does not simply progress from red to blue (or vice versa). Instead, freshly exposed, redder surfaces initially brighten in the near-ultraviolet region (i.e., become bluer at shorter wavelengths), then brighten in the visible to near-infrared region, leading to Bennu's moderately blue average color. Craters indicate that the time scale of these color changes is ~10
Identifiants
pubmed: 33033157
pii: science.abc3660
doi: 10.1126/science.abc3660
pii:
doi:
Banques de données
figshare
['10.6084/m9.figshare.12996494']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.