skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: DETECTION OF WIDESPREAD HYDRATED MATERIALS ON VESTA BY THE VIR IMAGING SPECTROMETER ON BOARD THE DAWN MISSION

Abstract

Water plays a key role in the evolution of terrestrial planets, and notably in the occurrence of Earth's oceans. However, the mechanism by which water has been incorporated into these bodies-including Earth-is still extensively debated. Here we report the detection of widespread 2.8 {mu}m OH absorption bands on the surface of the asteroid Vesta by the VIR imaging spectrometer on board Dawn. These observations are surprising as Vesta is fully differentiated with a basaltic surface. The 2.8 {mu}m OH absorption is distributed across Vesta's surface and shows areas enriched and depleted in hydrated materials. The uneven distribution of hydrated mineral phases is unexpected and indicates ancient processes that differ from those believed to be responsible for OH on other airless bodies, like the Moon. The origin of Vestan OH provides new insight into the delivery of hydrous materials in the main belt and may offer new scenarios on the delivery of hydrous minerals in the inner solar system, suggesting processes that may have played a role in the formation of terrestrial planets.

Authors:
; ; ; ; ; ; ; ; ; ; ;  [1]; ;  [2];  [3];  [4];  [5];  [6];  [7];  [8] more »; « less
  1. Istituto di Astrofisica e Planetologia Spaziali, INAF, Rome (Italy)
  2. Bear Fight Institute, Winthrop, WA (United States)
  3. NASA Lunar Science Institute, Boulder, CO (United States)
  4. NASA Johnson Space Center, Houston, TX (United States)
  5. Department of Geological Sciences, Brown University, Providence, RI (United States)
  6. Department of Astronomy, University of Maryland, Maryland (United States)
  7. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA (United States)
  8. Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA (United States)
Publication Date:
OSTI Identifier:
22078481
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 758; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; ASTEROIDS; DETECTION; GALACTIC EVOLUTION; HYDRATES; HYDROXIDES; MINERALS; MOON; PLANETS; SEAS; SOLAR SYSTEM; SPECTROMETERS; WATER

Citation Formats

De Sanctis, M. C., Ammannito, E., Palomba, E., Longobardo, A., Capaccioni, F., Capria, M. T., Tosi, F., Zambon, F., Carraro, F., Fonte, S., Frigeri, A., Magni, G., Combe, J.-Ph., McCord, T. B., Marchi, S., Mittlefehldt, D. W., Pieters, C. M., Sunshine, J., Raymond, C. A., Russell, C. T., E-mail: mariacristina.desanctis@iaps.inaf.it, and and others. DETECTION OF WIDESPREAD HYDRATED MATERIALS ON VESTA BY THE VIR IMAGING SPECTROMETER ON BOARD THE DAWN MISSION. United States: N. p., 2012. Web. doi:10.1088/2041-8205/758/2/L36.
De Sanctis, M. C., Ammannito, E., Palomba, E., Longobardo, A., Capaccioni, F., Capria, M. T., Tosi, F., Zambon, F., Carraro, F., Fonte, S., Frigeri, A., Magni, G., Combe, J.-Ph., McCord, T. B., Marchi, S., Mittlefehldt, D. W., Pieters, C. M., Sunshine, J., Raymond, C. A., Russell, C. T., E-mail: mariacristina.desanctis@iaps.inaf.it, & and others. DETECTION OF WIDESPREAD HYDRATED MATERIALS ON VESTA BY THE VIR IMAGING SPECTROMETER ON BOARD THE DAWN MISSION. United States. doi:10.1088/2041-8205/758/2/L36.
De Sanctis, M. C., Ammannito, E., Palomba, E., Longobardo, A., Capaccioni, F., Capria, M. T., Tosi, F., Zambon, F., Carraro, F., Fonte, S., Frigeri, A., Magni, G., Combe, J.-Ph., McCord, T. B., Marchi, S., Mittlefehldt, D. W., Pieters, C. M., Sunshine, J., Raymond, C. A., Russell, C. T., E-mail: mariacristina.desanctis@iaps.inaf.it, and and others. Sat . "DETECTION OF WIDESPREAD HYDRATED MATERIALS ON VESTA BY THE VIR IMAGING SPECTROMETER ON BOARD THE DAWN MISSION". United States. doi:10.1088/2041-8205/758/2/L36.
@article{osti_22078481,
title = {DETECTION OF WIDESPREAD HYDRATED MATERIALS ON VESTA BY THE VIR IMAGING SPECTROMETER ON BOARD THE DAWN MISSION},
author = {De Sanctis, M. C. and Ammannito, E. and Palomba, E. and Longobardo, A. and Capaccioni, F. and Capria, M. T. and Tosi, F. and Zambon, F. and Carraro, F. and Fonte, S. and Frigeri, A. and Magni, G. and Combe, J.-Ph. and McCord, T. B. and Marchi, S. and Mittlefehldt, D. W. and Pieters, C. M. and Sunshine, J. and Raymond, C. A. and Russell, C. T., E-mail: mariacristina.desanctis@iaps.inaf.it and and others},
abstractNote = {Water plays a key role in the evolution of terrestrial planets, and notably in the occurrence of Earth's oceans. However, the mechanism by which water has been incorporated into these bodies-including Earth-is still extensively debated. Here we report the detection of widespread 2.8 {mu}m OH absorption bands on the surface of the asteroid Vesta by the VIR imaging spectrometer on board Dawn. These observations are surprising as Vesta is fully differentiated with a basaltic surface. The 2.8 {mu}m OH absorption is distributed across Vesta's surface and shows areas enriched and depleted in hydrated materials. The uneven distribution of hydrated mineral phases is unexpected and indicates ancient processes that differ from those believed to be responsible for OH on other airless bodies, like the Moon. The origin of Vestan OH provides new insight into the delivery of hydrous materials in the main belt and may offer new scenarios on the delivery of hydrous minerals in the inner solar system, suggesting processes that may have played a role in the formation of terrestrial planets.},
doi = {10.1088/2041-8205/758/2/L36},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 758,
place = {United States},
year = {2012},
month = {10}
}