Evidence for widespread hydrated minerals on asteroid (101955) Bennu
V. Hamilton
(1)
,
A. Simon
,
P. Christensen
(2)
,
D. Reuter
(3)
,
B. Clark
(4)
,
M. A. Barucci
(5)
,
N. Bowles
(6)
,
W. Boynton
(7)
,
J. R. Brucato
(8)
,
E. Cloutis
(9)
,
H. Connolly
(10)
,
K. Donaldson Hanna
(6)
,
J. Emery
(11)
,
H. Enos
(7)
,
S. Fornasier
(5)
,
C. Haberle
(2)
,
R. Hanna
(12, 13)
,
E. Howell
(7)
,
H. Kaplan
(1)
,
L. Keller
(14, 15)
,
C. Lantz
(16, 17)
,
J.-Y. Li
(18)
,
L. Lim
(3)
,
T. Mccoy
(19)
,
F. Merlin
(5)
,
M. Nolan
(7)
,
A. Praet
(20)
,
B. Rozitis
(21)
,
S. Sandford
(22)
,
D. Schrader
(23)
,
C. Thomas
(24)
,
X.-D. Zou
(18)
,
D. Lauretta
(7)
,
Marc Bernacki
(25)
,
Daniel Pino Muñoz
(25)
1
SwRI -
Southwest Research Institute [Boulder]
2 SESE - ASU School of Earth and Space Exploration
3 GSFC - NASA Goddard Space Flight Center
4 Ithaca College
5 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
6 AOPP - Department of Atmospheric, Oceanic and Planetary Physics [Oxford]
7 LPL - Lunar and Planetary Laboratory [Tucson]
8 OAA - INAF - Osservatorio Astrofisico di Arcetri
9 Department of Geography [Winnipeg]
10 Department of Physics, Rowan University, Glassboro
11 Department of Earth and Planetary Sciences [Knoxville]
12 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
13 Department of Geological Sciences, Jackson School of Geosciences
14 SLS-PSI - The Swiss Light Source (SLS)
15 JSC - NASA Johnson Space Center
16 IAS - Institut d'astrophysique spatiale
17 UP11 - Université Paris-Sud - Paris 11
18 PSI - Planetary Science Institute [Tucson]
19 Smithsonian Institution, National Museum of Natural History
20 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
21 OU - The Open University [Milton Keynes]
22 ARC-CREST - NASA Ames Research Center Cooperative for Research in Earth Science in Technology
23 Center for Meteorite Studies [Tempe]
24 Northern Arizona University [Flagstaff]
25 CEMEF - Centre de Mise en Forme des Matériaux
2 SESE - ASU School of Earth and Space Exploration
3 GSFC - NASA Goddard Space Flight Center
4 Ithaca College
5 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
6 AOPP - Department of Atmospheric, Oceanic and Planetary Physics [Oxford]
7 LPL - Lunar and Planetary Laboratory [Tucson]
8 OAA - INAF - Osservatorio Astrofisico di Arcetri
9 Department of Geography [Winnipeg]
10 Department of Physics, Rowan University, Glassboro
11 Department of Earth and Planetary Sciences [Knoxville]
12 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
13 Department of Geological Sciences, Jackson School of Geosciences
14 SLS-PSI - The Swiss Light Source (SLS)
15 JSC - NASA Johnson Space Center
16 IAS - Institut d'astrophysique spatiale
17 UP11 - Université Paris-Sud - Paris 11
18 PSI - Planetary Science Institute [Tucson]
19 Smithsonian Institution, National Museum of Natural History
20 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
21 OU - The Open University [Milton Keynes]
22 ARC-CREST - NASA Ames Research Center Cooperative for Research in Earth Science in Technology
23 Center for Meteorite Studies [Tempe]
24 Northern Arizona University [Flagstaff]
25 CEMEF - Centre de Mise en Forme des Matériaux
V. Hamilton
- Fonction : Auteur
- PersonId : 775894
- ORCID : 0000-0001-8675-2083
A. Simon
- Fonction : Auteur
- PersonId : 755233
- ORCID : 0000-0003-4641-6186
- IdRef : 177556099
P. Christensen
- Fonction : Auteur
- PersonId : 755431
- ORCID : 0000-0001-9625-4723
D. Reuter
- Fonction : Auteur
- PersonId : 760824
- ORCID : 0000-0002-6829-5680
H. Connolly
- Fonction : Auteur
- PersonId : 798633
- ORCID : 0000-0002-1803-5098
J. Emery
- Fonction : Auteur
- PersonId : 755287
- ORCID : 0000-0001-9265-9475
C. Haberle
- Fonction : Auteur
- PersonId : 799289
- ORCID : 0000-0003-1174-7313
R. Hanna
- Fonction : Auteur
- PersonId : 14207
- IdHAL : rachelle-hanna
- IdRef : 189023406
E. Howell
- Fonction : Auteur
- PersonId : 762354
- ORCID : 0000-0002-7683-5843
H. Kaplan
- Fonction : Auteur
- PersonId : 756264
- ORCID : 0000-0002-6562-9462
C. Lantz
- Fonction : Auteur
- PersonId : 997444
L. Lim
- Fonction : Auteur
- PersonId : 759360
- ORCID : 0000-0002-9696-9654
M. Nolan
- Fonction : Auteur
- PersonId : 758023
- ORCID : 0000-0001-8316-0680
B. Rozitis
- Fonction : Auteur
- PersonId : 780569
- ORCID : 0000-0001-9893-241X
D. Lauretta
- Fonction : Auteur
- PersonId : 764968
- ORCID : 0000-0002-2597-5950
Marc Bernacki
- Fonction : Auteur
- PersonId : 11273
- IdHAL : marc-bernacki
- ORCID : 0000-0002-6677-2850
- IdRef : 106974599
Daniel Pino Muñoz
- Fonction : Auteur
- PersonId : 9654
- IdHAL : daniel-pino-munoz
- ORCID : 0000-0003-3969-6204
- IdRef : 170568288
Résumé
Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 µm and thermal infrared spectral features that are most similar to those of aqueously altered CM-type carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence of substantial rotational variability at the spatial scales of tens to hundreds of metres observed to date. In the visible and near-infrared (0.4 to 2.4 µm) Bennu’s spectrum appears featureless and with a blue (negative) slope, confirming previous ground-based observations. Bennu may represent a class of objects that could have brought volatiles and organic chemistry to Earth.