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dc.contributor.authorNimmo, Francis
dc.contributor.authorMatsuyama, Isamu
dc.date.accessioned2019-04-24T20:45:44Z
dc.date.available2019-04-24T20:45:44Z
dc.date.issued2019-03-15
dc.identifier.citationNimmo, F., & Matsuyama, I. (2019). Tidal dissipation in rubble-pile asteroids. Icarus, 321, 715-721.en_US
dc.identifier.issn00191035
dc.identifier.doi10.1016/j.icarus.2018.12.012
dc.identifier.urihttp://hdl.handle.net/10150/632093
dc.description.abstractWe develop a simple scaling argument for frictional dissipation in rubble-pile asteroids, parameterized as an effective dissipation factor Q. This scaling is combined with a prediction (Goldreich, P., Sari, R., 2009. Tidal evolution of rubble piles. Astrophys. J. 691, 54-60) for the tidal response amplitude, parameterized by the Love number k(2). We compare the combined scaling with k(2)/Q values inferred from asteroid binaries in which the semi-major axis is determined by a balance between tidal dissipation and the binary YORP (or BYORP) effect (Jacobson, S.A., Scheeres, D.J., 2011. Long-term stable equilibria for synchronous binary asteroids. Astrophys. J. Lett. 736, L19). The k(2)/Q scaling matches the inferred values if dissipation is confined to a regolith layer of thickness similar to 30 m, similar to the available asteroid regolith thickness estimates. The scaling suggests a regolith thickness that is independent of (or decreases slightly with) increasing asteroid radius; this result is consistent with at least one model of regolith generation via impacts.en_US
dc.language.isoenen_US
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEen_US
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0019103518304500en_US
dc.rights© 2018 Elsevier Inc. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleTidal dissipation in rubble-pile asteroidsen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalICARUSen_US
dc.description.note12 month embargo; available online 12 December 2018.en_US
dc.description.collectioninformationThis 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.versionFinal accepted manuscripten_US
dc.source.journaltitleIcarus
dc.source.volume321
dc.source.beginpage715
dc.source.endpage721


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