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Journal Articles Meteoritics and Planetary Science Year : 2014

Final reports of the Stardust Interstellar Preliminary Examination

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Andrew J. Westphal
  • Function : Author
Hans A. Bechtel
  • Function : Author
Frank E. Brenker
  • Function : Author
Anna L. Butterworth
  • Function : Author
George Flynn
  • Function : Author
David R. Frank
  • Function : Author
Zack Gainsforth
  • Function : Author
Jon K. Hillier
  • Function : Author
Frank Postberg
  • Function : Author
Alexandre S. Simionovici
  • Function : Author
Veerle J. Sterken
  • Function : Author
Rhonda M. Stroud
  • Function : Author
Carlton Allen
  • Function : Author
David Anderson
Asna Ansari
  • Function : Author
Sasa Bajt
  • Function : Author
Ron K. Bastien
  • Function : Author
Nabil Bassim
  • Function : Author
Janet Borg
  • Function : Author
John Bridges
  • Function : Author
Donald E. Brownlee
  • Function : Author
Mark Burchell
  • Function : Author
Manfred Burghammer
  • Function : Author
Hitesh Changela
  • Function : Author
Peter Cloetens
  • Function : Author
Andrew M. Davis
  • Function : Author
Ryan Doll
  • Function : Author
Christine Floss
  • Function : Author
Eberhard Gruen
  • Function : Author
Philipp R. Heck
  • Function : Author
Peter Hoppe
  • Function : Author
Bruce Hudson
  • Function : Author
Joachim Huth
  • Function : Author
Brit Hvide
  • Function : Author
Anton Kearsley
  • Function : Author
Ashley J. King
  • Function : Author
Barry Lai
  • Function : Author
Jan Leitner
  • Function : Author
Hugues Leroux
  • Function : Author
Ariel Leonard
  • Function : Author
Robert Lettieri
  • Function : Author
William Marchant
  • Function : Author
Larry R. Nittler
  • Function : Author
Ryan Ogliore
  • Function : Author
Wei Ja Ong
  • Function : Author
Mark C. Price
  • Function : Author
Scott A. Sandford
  • Function : Author
Juan-Angel Sans Tresseras
  • Function : Author
Sylvia Schmitz
  • Function : Author
Tom Schoonjans
  • Function : Author
Geert Silversmit
  • Function : Author
Vicente A. Sole
  • Function : Author
Ralf Srama
  • Function : Author
Frank Stadermann
  • Function : Author
Thomas Stephan
  • Function : Author
Julien Stodolna
  • Function : Author
Steven Sutton
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Mario Trieloff
  • Function : Author
Peter Tsou
  • Function : Author
Akira Tsuchiyama
  • Function : Author
Tolek Tyliszczak
  • Function : Author
Bart Vekemans
  • Function : Author
Laszlo Vincze
  • Function : Author
Joshua von Korff
  • Function : Author
Naomi Wordsworth
  • Function : Author
Daniel Zevin
  • Function : Author
Michael E. Zolensky
  • Function : Author

Abstract

With the discovery of bona fide extraterrestrial materials in the Stardust Interstellar Dust Collector, NASA now has a fundamentally new returned sample collection, after the Apollo, Antarctic meteorite, Cosmic Dust, Genesis, Stardust Cometary, Hayabusa, and Exposed Space Hardware samples. Here, and in companion papers in this volume, we present the results from the Preliminary Examination of this collection, the Stardust Interstellar Preliminary Examination (ISPE). We found extraterrestrial materials in two tracks in aerogel whose trajectories and morphology are consistent with an origin in the interstellar dust stream, and in residues in four impacts in the aluminum foil collectors. While the preponderance of evidence, described in detail in companion papers in this volume, points toward an interstellar origin for some of these particles, alternative origins have not yet been eliminated, and definitive tests through isotopic analyses were not allowed under the terms of the ISPE. In this summary, we answer the central questions of the ISPE: How many tracks in the collector are consistent in their morphology and trajectory with interstellar particles? How many of these potential tracks are consistent with real interstellar particles, based on chemical analysis? Conversely, what fraction of candidates are consistent with either a secondary or interplanetary origin? What is the mass distribution of these particles, and what is their state? Are they particulate or diffuse? Is there any crystalline material? How many detectable impact craters ( 100 nm) are there in the foils, and what is their size distribution? How many of these craters have analyzable residue that is consistent with extraterrestrial material? And finally, can craters from secondaries be recognized through crater morphology (e.g., ellipticity)?

Dates and versions

hal-02351048 , version 1 (06-11-2019)

Identifiers

Cite

Andrew J. Westphal, Hans A. Bechtel, Frank E. Brenker, Anna L. Butterworth, George Flynn, et al.. Final reports of the Stardust Interstellar Preliminary Examination. Meteoritics and Planetary Science, 2014, 49 (9, SI), pp.1720--1733. ⟨10.1111/maps.12221⟩. ⟨hal-02351048⟩
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