Hemispherical differences in the shape and topography of asteroid (101955) Bennu
dc.contributor.author | Daly, M G | |
dc.contributor.author | Barnouin, O S | |
dc.contributor.author | Seabrook, J A | |
dc.contributor.author | Roberts, J | |
dc.contributor.author | Dickinson, C | |
dc.contributor.author | Walsh, K J | |
dc.contributor.author | Jawin, E R | |
dc.contributor.author | Palmer, E E | |
dc.contributor.author | Gaskell, R | |
dc.contributor.author | Weirich, J | |
dc.contributor.author | Haltigin, T | |
dc.contributor.author | Gaudreau, D | |
dc.contributor.author | Brunet, C | |
dc.contributor.author | Cunningham, G | |
dc.contributor.author | Michel, P | |
dc.contributor.author | Zhang, Y | |
dc.contributor.author | Ballouz, R-L | |
dc.contributor.author | Neumann, G | |
dc.contributor.author | Perry, M E | |
dc.contributor.author | Philpott, L | |
dc.contributor.author | Al Asad, M M | |
dc.contributor.author | Johnson, C L | |
dc.contributor.author | Adam, C D | |
dc.contributor.author | Leonard, J M | |
dc.contributor.author | Geeraert, J L | |
dc.contributor.author | Getzandanner, K | |
dc.contributor.author | Nolan, M C | |
dc.contributor.author | Daly, R T | |
dc.contributor.author | Bierhaus, E B | |
dc.contributor.author | Mazarico, E | |
dc.contributor.author | Rozitis, B | |
dc.contributor.author | Ryan, A J | |
dc.contributor.author | DellaGiustina, D N | |
dc.contributor.author | Rizk, B | |
dc.contributor.author | Susorney, H C M | |
dc.contributor.author | Enos, H L | |
dc.contributor.author | Lauretta, D S | |
dc.date.accessioned | 2021-01-28T19:58:00Z | |
dc.date.available | 2021-01-28T19:58:00Z | |
dc.date.issued | 2020-10-08 | |
dc.identifier.citation | Daly, M. G., Barnouin, O. S., Seabrook, J. A., Roberts, J., Dickinson, C., Walsh, K. J., ... & Lauretta, D. S. (2020). Hemispherical differences in the shape and topography of asteroid (101955) Bennu. Science Advances, 6(41), eabd3649. | en_US |
dc.identifier.issn | 2375-2548 | |
dc.identifier.pmid | 33033038 | |
dc.identifier.doi | 10.1126/sciadv.abd3649 | |
dc.identifier.uri | http://hdl.handle.net/10150/651286 | |
dc.description.abstract | We investigate the shape of near-Earth asteroid (101955) Bennu by constructing a high-resolution (20 cm) global digital terrain model from laser altimeter data. By modeling the northern and southern hemispheres separately, we find that longitudinal ridges previously identified in the north extend into the south but are obscured there by surface material. In the south, more numerous large boulders effectively retain surface materials and imply a higher average strength at depth to support them. The north has fewer large boulders and more evidence of boulder dynamics (toppling and downslope movement) and surface flow. These factors result in Bennu's southern hemisphere being rounder and smoother, whereas its northern hemisphere has higher slopes and a less regular shape. We infer an originally asymmetric distribution of large boulders followed by a partial disruption, leading to wedge formation in Bennu's history. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER ASSOC ADVANCEMENT SCIENCE | en_US |
dc.rights | Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Hemispherical differences in the shape and topography of asteroid (101955) Bennu | en_US |
dc.type | Article | en_US |
dc.contributor.department | Univ Arizona, Lunar & Planetary Lab | en_US |
dc.identifier.journal | SCIENCE ADVANCES | en_US |
dc.description.note | Open access journal | en_US |
dc.description.collectioninformation | This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. | en_US |
dc.eprint.version | Final published version | en_US |
dc.source.journaltitle | Science advances | |
dc.source.volume | 6 | |
dc.source.issue | 41 | |
refterms.dateFOA | 2021-01-28T19:58:11Z | |
dc.source.country | United States |