Westphal, A. J.; Bastien, R. K.; Borg, J.; Bridges, J.; Brownlee, D. E.; Burchell, M. J.; Cheng, A. F.; Clark, B. C.; Djouadi, Z.; Floss, C.; Franchi, I.; Gainsforth, Z.; Graham, G.; Green, S. F.; Heck, P. R.; Horanyi, M.; Hoppe, P.; Horz, F. P.; Huth, J.; Kearsley, A.; Leroux, H.; Marhas, K.; Nakamura-Messenger, K.; Sandford, S. A.; See, T. H.; Stadermann, F. J.; Teslich, N. E.; Tsitrin, S.; Warren, J. L.; Wozniakiewicz, P. J. and Zolensky, M. E.
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We report the discovery that impacts in the Stardust cometary collector are not distributed randomly in the collecting media, but appear to be clustered on scales smaller than ~10 cm. We also report the discovery of at least two populations of oblique tracks. We evaluate several hypotheses that could explain the observations. No hypothesis is consistent with all the observations, but the preponderance of evidence points toward at least one impact on the central Whipple shield of the spacecraft as the origin of both clustering and low-angle oblique tracks. High-angle oblique tracks unambiguously originate from a non-cometary impact on the spacecraft bus just forward of the collector.
|Item Type:||Journal Article|
|Academic Unit/Department:||Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Ian Franchi|
|Date Deposited:||02 Dec 2008 06:13|
|Last Modified:||02 Aug 2016 13:19|
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