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Variations in color and reflectance on the surface of asteroid (101955) Bennu.
DellaGiustina, D N; Burke, K N; Walsh, K J; Smith, P H; Golish, D R; Bierhaus, E B; Ballouz, R-L; Becker, T L; Campins, H; Tatsumi, E; Yumoto, K; Sugita, S; Deshapriya, J D Prasanna; Cloutis, E A; Clark, B E; Hendrix, A R; Sen, A; Al Asad, M M; Daly, M G; Applin, D M; Avdellidou, C; Barucci, M A; Becker, K J; Bennett, C A; Bottke, W F; Brodbeck, J I; Connolly, H C; Delbo, M; de Leon, J; Drouet d'Aubigny, C Y; Edmundson, K L; Fornasier, S; Hamilton, V E; Hasselmann, P H; Hergenrother, C W; Howell, E S; Jawin, E R; Kaplan, H H; Le Corre, L; Lim, L F; Li, J Y; Michel, P; Molaro, J L; Nolan, M C; Nolau, J; Pajola, M; Parkinson, A; Popescu, M; Porter, N A; Rizk, B.
  • DellaGiustina DN; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA. danidg@lpl.arizona.edu.
  • Burke KN; Department of Geosciences, University of Arizona, Tucson, AZ, USA.
  • Walsh KJ; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Smith PH; Southwest Research Institute, Boulder, CO, USA.
  • Golish DR; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Bierhaus EB; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Ballouz RL; Lockheed Martin Space, Littleton, CO, USA.
  • Becker TL; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Campins H; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Tatsumi E; Department of Physics, University of Central Florida, Orlando, FL, USA.
  • Yumoto K; Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain.
  • Sugita S; Department of Earth and Planetary Science, University of Tokyo, Tokyo, 113-0033, Japan.
  • Deshapriya JDP; Department of Earth and Planetary Science, University of Tokyo, Tokyo, 113-0033, Japan.
  • Cloutis EA; Department of Earth and Planetary Science, University of Tokyo, Tokyo, 113-0033, Japan.
  • Clark BE; LESIA (Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique), Observatoire de Paris, Université PSL (Paris Sciences & Lettres), CNRS (Centre National de la Recherche Scientifique), Université de Paris, Sorbonne Université, 92195 Meudon, France.
  • Hendrix AR; Department of Geography, University of Winnipeg, Winnipeg, MB R3B 2E9, Canada.
  • Sen A; Department of Physics and Astronomy, Ithaca College, Ithaca, NY, USA.
  • Al Asad MM; Planetary Science Institute, Tucson, AZ, USA.
  • Daly MG; Department of Physics and Astronomy, Ithaca College, Ithaca, NY, USA.
  • Applin DM; Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada.
  • Avdellidou C; The Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada.
  • Barucci MA; Department of Geography, University of Winnipeg, Winnipeg, MB R3B 2E9, Canada.
  • Becker KJ; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France.
  • Bennett CA; LESIA (Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique), Observatoire de Paris, Université PSL (Paris Sciences & Lettres), CNRS (Centre National de la Recherche Scientifique), Université de Paris, Sorbonne Université, 92195 Meudon, France.
  • Bottke WF; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Brodbeck JI; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Connolly HC; Southwest Research Institute, Boulder, CO, USA.
  • Delbo M; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • de Leon J; Department of Geology, Rowan University, Glassboro, NJ, USA.
  • Drouet d'Aubigny CY; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France.
  • Edmundson KL; Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain.
  • Fornasier S; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Hamilton VE; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Hasselmann PH; LESIA (Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique), Observatoire de Paris, Université PSL (Paris Sciences & Lettres), CNRS (Centre National de la Recherche Scientifique), Université de Paris, Sorbonne Université, 92195 Meudon, France.
  • Hergenrother CW; Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris CEDEX 05, France.
  • Howell ES; Southwest Research Institute, Boulder, CO, USA.
  • Jawin ER; LESIA (Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique), Observatoire de Paris, Université PSL (Paris Sciences & Lettres), CNRS (Centre National de la Recherche Scientifique), Université de Paris, Sorbonne Université, 92195 Meudon, France.
  • Kaplan HH; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Le Corre L; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Lim LF; Smithsonian Institution National Museum of Natural History, Washington, DC, USA.
  • Li JY; NASA Goddard Space Flight Center, Greenbelt, MD, USA.
  • Michel P; Planetary Science Institute, Tucson, AZ, USA.
  • Molaro JL; Smithsonian Institution National Museum of Natural History, Washington, DC, USA.
  • Nolan MC; Planetary Science Institute, Tucson, AZ, USA.
  • Nolau J; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France.
  • Pajola M; Planetary Science Institute, Tucson, AZ, USA.
  • Parkinson A; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Popescu M; Lockheed Martin Space, Littleton, CO, USA.
  • Porter NA; Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Padova, Padua, Italy.
  • Rizk B; Department of Geography, University of Winnipeg, Winnipeg, MB R3B 2E9, Canada.
Science ; 370(6517)2020 11 06.
Article en En | MEDLINE | ID: mdl-33033157
ABSTRACT
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 ~105 years. We attribute the reflectance and color variation to a combination of primordial heterogeneity and varying exposure ages.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article
Texto completo
Imprimir
XML
PubMed Links
Search on Google

Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article