Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

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

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 beta 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.
Document type :
Journal articles
Complete list of metadata

https://hal-univ-lyon1.archives-ouvertes.fr/hal-02351050
Contributor : Depot 2 Lyon 1 Connect in order to contact the contributor
Submitted on : Wednesday, November 6, 2019 - 11:39:33 AM
Last modification on : Tuesday, October 19, 2021 - 7:00:44 PM

Links full text

Identifiers

Collections

Citation

Robert Lettieri, William Marchant, Larry R. Nittler, Ryan Ogliore, Wei Ja Ong, et al.. Stardust Interstellar Preliminary Examination X: Impact speeds and directions of interstellar grains on the Stardust dust collector. Meteoritics and Planetary Science, Wiley, 2014, 49 (9, SI), pp.1680--1697. ⟨10.1111/maps.12219⟩. ⟨hal-02351050⟩

Share

Metrics

Record views

17