Episodes of particle ejection from the surface of the active asteroid (101955) Bennu-Reference-Cited by-同舟云学术

Episodes of particle ejection from the surface of the active asteroid (101955) Bennu

Published:2019-12-06 Issue:6470 Volume:366 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lauretta D. S.¹^ORCID,Hergenrother C. W.¹^ORCID,Chesley S. R.²^ORCID,Leonard J. M.³^ORCID,Pelgrift J. Y.³^ORCID,Adam C. D.³^ORCID,Al Asad M.⁴^ORCID,Antreasian P. G.³^ORCID,Ballouz R.-L.¹^ORCID,Becker K. J.¹^ORCID,Bennett C. A.¹^ORCID,Bos B. J.⁵,Bottke W. F.⁶^ORCID,Brozović M.²,Campins H.⁷^ORCID,Connolly H. C.¹⁸^ORCID,Daly M. G.⁹^ORCID,Davis A. B.¹⁰^ORCID,de León J.¹¹^ORCID,DellaGiustina D. N.¹¹²^ORCID,Drouet d’Aubigny C. Y.¹^ORCID,Dworkin J. P.⁵^ORCID,Emery J. P.¹³¹⁴^ORCID,Farnocchia D.²^ORCID,Glavin D. P.⁵^ORCID,Golish D. R.¹^ORCID,Hartzell C. M.¹⁵^ORCID,Jacobson R. A.²,Jawin E. R.¹⁶^ORCID,Jenniskens P.¹⁷^ORCID,Kidd J. N.¹^ORCID,Lessac-Chenen E. J.³^ORCID,Li J.-Y.¹⁸^ORCID,Libourel G.¹⁹^ORCID,Licandro J.¹¹^ORCID,Liounis A. J.⁵,Maleszewski C. K.¹^ORCID,Manzoni C.²⁰^ORCID,May B.²⁰,McCarthy L. K.³,McMahon J. W.¹⁰^ORCID,Michel P.¹⁹^ORCID,Molaro J. L.¹⁸^ORCID,Moreau M. C.⁵^ORCID,Nelson D. S.³^ORCID,Owen W. M.²^ORCID,Rizk B.¹^ORCID,Roper H. L.¹^ORCID,Rozitis B.²¹,Sahr E. M.³^ORCID,Scheeres D. J.¹⁰^ORCID,Seabrook J. A.⁹^ORCID,Selznick S. H.¹^ORCID,Takahashi Y.²^ORCID,Thuillet F.¹⁹^ORCID,Tricarico P.¹⁸^ORCID,Vokrouhlický D.²²^ORCID,Wolner C. W. V.¹

Affiliation:

1. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.

2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.

3. KinetX Aerospace, Simi Valley, CA, USA.

4. Department of Earth, Ocean, and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada.

5. NASA Goddard Space Flight Center, Greenbelt, MD, USA.

6. Southwest Research Institute, Boulder, CO, USA.

7. Department of Physics, University of Central Florida, Orlando, FL, USA.

8. Department of Geology, Rowan University, Glassboro, NJ, USA.

9. The Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada.

10. Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO, USA.

11. Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain.

12. Department of Geosciences, University of Arizona, Tucson, AZ, USA.

13. Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, USA.

14. Department of Astronomy and Planetary Sciences, Northern Arizona University, Flagstaff, AZ, USA.

15. Department of Aerospace Engineering, University of Maryland, College Park, MD, USA.

16. Smithsonian Institution National Museum of Natural History, Washington, DC, USA.

17. SETI (Search for Extraterrestrial Intelligence) Institute, Mountain View, CA, USA.

18. Planetary Science Institute, Tucson, AZ, USA.

19. Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS (Centre national de la recherche scientifique), Laboratoire Lagrange, Nice, France.

20. London Stereoscopic Company, London, UK.

21. School of Physical Sciences, Open University, Milton Keynes, UK.

22. Institute of Astronomy, Charles University, Prague, Czech Republic.

Abstract

Bennu ejects material from its surface Most asteroids appear inert, but remote observations show that a small number experience mass loss from their surfaces. Lauretta and Hergenrother et al. describe close-range observations of mass loss on the near-Earth asteroid Bennu (see the Perspective by Agarwal). Shortly after arriving at Bennu, navigation cameras on the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security—Regolith Explorer) spacecraft detected objects 1 to 10 centimeters in diameter moving above the surface. Analysis of the objects' trajectories showed that they originated in discrete ejection events from otherwise unremarkable locations on Bennu. Some objects remained in orbit for several days, whereas others escaped into interplanetary space. The authors suggest multiple plausible mechanisms that could underlie this activity. Science , this issue p. eaay3544 ; see also p. 1192

Funder

National Aeronautics and Space Administration

Marshall Space Flight Center

Goddard Space Flight Center

Canadian Space Agency

Centre National d’Etudes Spatiales

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference91 articles.

1. D. Jewitt H. Hsieh J. Agarwal “The active asteroids” in Asteroids IV P. Michel F. E. DeMeo W. F. Bottke Eds. (Univ. of Arizona Press 2015) pp. 221–241.