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Stardust Interstellar Preliminary Examination X: Impact speeds and directions of interstellar grains on the Stardust dust collector

Sterken, Veerle J., Westphal, Andrew J., Altobelli, Nicolas, Grün, Eberhard, Hillier, Jon K., Postberg, Frank, Srama, Ralf, Allen, Carlton, Anderson, David, Ansari, Asna, and others. (2014) Stardust Interstellar Preliminary Examination X: Impact speeds and directions of interstellar grains on the Stardust dust collector. Meteoritics & Planetary Science, 49 (9). pp. 1680-1697. ISSN 1086-9379. E-ISSN 1945-5100. (doi:10.1111/maps.12219) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1111/maps.12219

Abstract

On the basis of an interstellar dust model compatible with Ulysses and Galileo observations, we calculate and predict the trajectories of interstellar dust (ISD) in the solar system and the distribution of the impact speeds, directions, and flux of ISD particles on the Stardust Interstellar Dust Collector during the two collection periods of the mission. We find that the expected impact velocities are generally low (<10 km s?1) for particles with the ratio of the solar radiation pressure force to the solar gravitational force ? > 1, and that some of the particles will impact on the cometary side of the collector. If we assume astronomical silicates for particle material and a density of 2 g cm?3, and use the Ulysses measurements and the ISD trajectory simulations, we conclude that the total number of (detectable) captured ISD particles may be on the order of 50. In companion papers in this volume, we report the discovery of three interstellar dust candidates in the Stardust aerogel tiles. The impact directions and speeds of these candidates are consistent with those calculated from our ISD propagation model, within the uncertainties of the model and of the observations.

Item Type: Article
DOI/Identification number: 10.1111/maps.12219
Uncontrolled keywords: interstellar dust, Stardust Interstellar Dust Collector
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Mark Burchell
Date Deposited: 20 Jan 2017 15:25 UTC
Last Modified: 24 Jan 2020 16:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/59971 (The current URI for this page, for reference purposes)
Burchell, Mark: https://orcid.org/0000-0002-2680-8943
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