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Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface

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Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface. / Walsh, K J; Jawin, E; Barnouin, O; Bierhaus, E; Connolly, H; Molaro, J; McCoy, T; Delbo, M; Hartzell, C; Pajola, M; Schwartz, S; Trang, D; Asphaug, E; Becker, K; Beddingfield, C; Bennett, C; Bottke, W; Burke, K; Clark, B; Daly, M; DellaGiustina, D; Dworkin, J; Elder, C; Golish, D; Hildebrand, A; Malhotra, R; Marshall, J ; MIchel, P; Nolan, M; Perry, M; Rizk, B; Ryan, A; Sanford, S; Scheeres, D; Susorney, Hannah; Thuillet, F; Lauretta, D; The OSIRIS-REx Team.

In: Nature Geoscience, Vol. 12, No. 4, 04.2019, p. 242-246.

Research output: Contribution to journalArticle

Harvard

Walsh, KJ, Jawin, E, Barnouin, O, Bierhaus, E, Connolly, H, Molaro, J, McCoy, T, Delbo, M, Hartzell, C, Pajola, M, Schwartz, S, Trang, D, Asphaug, E, Becker, K, Beddingfield, C, Bennett, C, Bottke, W, Burke, K, Clark, B, Daly, M, DellaGiustina, D, Dworkin, J, Elder, C, Golish, D, Hildebrand, A, Malhotra, R, Marshall, J, MIchel, P, Nolan, M, Perry, M, Rizk, B, Ryan, A, Sanford, S, Scheeres, D, Susorney, H, Thuillet, F, Lauretta, D & The OSIRIS-REx Team 2019, 'Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface' Nature Geoscience, vol. 12, no. 4, pp. 242-246. https://doi.org/10.1038/s41561-019-0326-6

APA

Walsh, K. J., Jawin, E., Barnouin, O., Bierhaus, E., Connolly, H., Molaro, J., ... The OSIRIS-REx Team (2019). Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface. Nature Geoscience, 12(4), 242-246. https://doi.org/10.1038/s41561-019-0326-6

Vancouver

Walsh KJ, Jawin E, Barnouin O, Bierhaus E, Connolly H, Molaro J et al. Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface. Nature Geoscience. 2019 Apr;12(4):242-246. https://doi.org/10.1038/s41561-019-0326-6

Author

Walsh, K J ; Jawin, E ; Barnouin, O ; Bierhaus, E ; Connolly, H ; Molaro, J ; McCoy, T ; Delbo, M ; Hartzell, C ; Pajola, M ; Schwartz, S ; Trang, D ; Asphaug, E ; Becker, K ; Beddingfield, C ; Bennett, C ; Bottke, W ; Burke, K ; Clark, B ; Daly, M ; DellaGiustina, D ; Dworkin, J ; Elder, C ; Golish, D ; Hildebrand, A ; Malhotra, R ; Marshall, J ; MIchel, P ; Nolan, M ; Perry, M ; Rizk, B ; Ryan, A ; Sanford, S ; Scheeres, D ; Susorney, Hannah ; Thuillet, F ; Lauretta, D ; The OSIRIS-REx Team. / Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface. In: Nature Geoscience. 2019 ; Vol. 12, No. 4. pp. 242-246.

Bibtex

@article{1cc49f35164447e2938df95f94b88139,
title = "Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface",
abstract = "Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid belt where they originate, and thermal or tidal processes act on them once they become near-Earth asteroids. Here we present early measurements of numerous large candidate impact craters on near-Earth asteroid (101955) Bennu by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission, which indicate a surface that is between 100 million and 1 billion years old, predating Bennu’s expected duration as a near-Earth asteroid. We also observe many fractured boulders, the morphology of which suggests an influence of impact or thermal processes over a considerable amount of time since the boulders were exposed at the surface. However, the surface also shows signs of more recent mass movement: clusters of boulders at topographic lows, a deficiency of small craters and infill of large craters. The oldest features likely record events from Bennu’s time in the main asteroid belt.",
author = "Walsh, {K J} and E Jawin and O Barnouin and E Bierhaus and H Connolly and J Molaro and T McCoy and M Delbo and C Hartzell and M Pajola and S Schwartz and D Trang and E Asphaug and K Becker and C Beddingfield and C Bennett and W Bottke and K Burke and B Clark and M Daly and D DellaGiustina and J Dworkin and C Elder and D Golish and A Hildebrand and R Malhotra and J Marshall and P MIchel and M Nolan and M Perry and B Rizk and A Ryan and S Sanford and D Scheeres and Hannah Susorney and F Thuillet and D Lauretta and {The OSIRIS-REx Team}",
year = "2019",
month = "4",
doi = "10.1038/s41561-019-0326-6",
language = "English",
volume = "12",
pages = "242--246",
journal = "Nature Geoscience",
issn = "1752-0894",
publisher = "Springer Nature",
number = "4",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface

AU - Walsh, K J

AU - Jawin, E

AU - Barnouin, O

AU - Bierhaus, E

AU - Connolly, H

AU - Molaro, J

AU - McCoy, T

AU - Delbo, M

AU - Hartzell, C

AU - Pajola, M

AU - Schwartz, S

AU - Trang, D

AU - Asphaug, E

AU - Becker, K

AU - Beddingfield, C

AU - Bennett, C

AU - Bottke, W

AU - Burke, K

AU - Clark, B

AU - Daly, M

AU - DellaGiustina, D

AU - Dworkin, J

AU - Elder, C

AU - Golish, D

AU - Hildebrand, A

AU - Malhotra, R

AU - Marshall, J

AU - MIchel, P

AU - Nolan, M

AU - Perry, M

AU - Rizk, B

AU - Ryan, A

AU - Sanford, S

AU - Scheeres, D

AU - Susorney, Hannah

AU - Thuillet, F

AU - Lauretta, D

AU - The OSIRIS-REx Team

PY - 2019/4

Y1 - 2019/4

N2 - Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid belt where they originate, and thermal or tidal processes act on them once they become near-Earth asteroids. Here we present early measurements of numerous large candidate impact craters on near-Earth asteroid (101955) Bennu by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission, which indicate a surface that is between 100 million and 1 billion years old, predating Bennu’s expected duration as a near-Earth asteroid. We also observe many fractured boulders, the morphology of which suggests an influence of impact or thermal processes over a considerable amount of time since the boulders were exposed at the surface. However, the surface also shows signs of more recent mass movement: clusters of boulders at topographic lows, a deficiency of small craters and infill of large craters. The oldest features likely record events from Bennu’s time in the main asteroid belt.

AB - Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid belt where they originate, and thermal or tidal processes act on them once they become near-Earth asteroids. Here we present early measurements of numerous large candidate impact craters on near-Earth asteroid (101955) Bennu by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission, which indicate a surface that is between 100 million and 1 billion years old, predating Bennu’s expected duration as a near-Earth asteroid. We also observe many fractured boulders, the morphology of which suggests an influence of impact or thermal processes over a considerable amount of time since the boulders were exposed at the surface. However, the surface also shows signs of more recent mass movement: clusters of boulders at topographic lows, a deficiency of small craters and infill of large craters. The oldest features likely record events from Bennu’s time in the main asteroid belt.

U2 - 10.1038/s41561-019-0326-6

DO - 10.1038/s41561-019-0326-6

M3 - Article

VL - 12

SP - 242

EP - 246

JO - Nature Geoscience

T2 - Nature Geoscience

JF - Nature Geoscience

SN - 1752-0894

IS - 4

ER -