Journal ArticleDOI
Stardust Interstellar Preliminary Examination I: Identification of tracks in aerogel
Andrew J. Westphal,David Anderson,Anna L. Butterworth,D. Frank,R. Lettieri,William Marchant,Joshua Von Korff,Daniel Zevin,Augusto Ardizzone,Antonella Campanile,Michael Capraro,Kevin Courtney,Mitchell N. Criswell Iii,Dixon Crumpler,Robert Cwik,Fred Jacob Gray,Bruce Hudson,Guy Imada,Joel Karr,Lily Lau Wan Wah,Michele Mazzucato,Pier Giorgio Motta,Carlo Rigamonti,Ronald C. Spencer,Stephens B. Woodrough,Irene Cimmino Santoni,Gerry Sperry,Jean-Noel Terry,Naomi Wordsworth,Tom Yahnke Sr.,Carlton Allen,Asna Ansari,Saša Bajt,Ron K. Bastien,Nabil Bassim,Hans A. Bechtel,Janet Borg,Frank E. Brenker,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,George J. Flynn,Zack Gainsforth,Eberhard Grün,Philipp R. Heck,Jon K. Hillier,Peter Hoppe,Joachim Huth,Brit Hvide,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Hugues Leroux,Ariel Leonard,Larry R. Nittler,Ryan C. Ogliore,Wei Ja Ong,Frank Postberg,Mark C. Price,Scott A. Sandford,Juan-Angel Sans Tresseras,Sylvia Schmitz,Tom Schoonjans,Geert Silversmit,Alexandre Simionovici,Vicente A. Solé,Ralf Srama,Thomas Stephan,Veerle Sterken,Julien Stodolna,Rhonda M. Stroud,Steven Sutton,Mario Trieloff,Peter Tsou,Akira Tsuchiyama,Tolek Tyliszczak,Bart Vekemans,Laszlo Vincze,Michael E. Zolensky +86 more
TLDR
In this paper, Westphal et al. reported the identification of 69 tracks in approximately 250 cm 2 of aerogelcollectors of the Stardust Interstellar Dust Collector using a distributed internet-based virtual microscope and search engine.Abstract:
–Here, we report the identification of 69 tracks in approximately 250 cm 2 of aerogelcollectors of the Stardust Interstellar Dust Collector. We identified these tracks throughStardust@home, a distributed internet-based virtual microscope and search engine, in which> 30,000 amateur scientists collectively performed >9 9 10 7 searches on approximately 10 6 fields of view. Using calibration images, we measured individual detection efficiency, andfound that the individual detection efficiency for tracks > 2.5 lm in diameter was >0.6, andwas >0.75 for tracks >3 lm in diameter. Because most fields of view were searched >30times, these results could be combined to yield a theoretical detection efficiency near unity.The initial expectation was that interstellar dust would be captured at very high speed. Theactual tracks discovered in the Stardust collector, however, were due to low-speed impacts,and were morphologically strongly distinct from the calibration images. As a result, thedetection efficiency of these tracks was lower than detection efficiency of calibrationspresented in training, testing, and ongoing calibration. Nevertheless, as calibration imagesbased on low-speed impacts were added later in the project, detection efficiencies for low-speed tracks rose dramatically. We conclude that a massively distributed, calibrated search,with amateur collaborators, is an effective approach to the challenging problem ofidentification of tracks of hypervelocity projectiles captured in aerogel.1510 A. J. Westphal et al.read more
Citations
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Journal ArticleDOI
Evidence for interstellar origin of seven dust particles collected by the Stardust spacecraft
Andrew J. Westphal,Rhonda M. Stroud,Hans A. Bechtel,Frank E. Brenker,Anna L. Butterworth,George J. Flynn,D. Frank,Zack Gainsforth,Jon K. Hillier,Frank Postberg,Alexandre Simionovici,Veerle Sterken,Larry R. Nittler,Carlton Allen,Dustin Anderson,Asna Ansari,Saša Bajt,Ron K. Bastien,Nabil Bassim,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,Eberhard Grün,Philipp R. Heck,Peter Hoppe,Bruce Hudson,Joachim Huth,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Ariel Leonard,Hugues Leroux,R. Lettieri,William Marchant,Ryan C. Ogliore,Wei Jia Ong,Mark C. Price,Scott A. Sandford,Juan-Angel Sans Tresseras,Sylvia Schmitz,Tom Schoonjans,Kate Schreiber,Geert Silversmit,Vicente A. Solé,Ralf Srama,Frank J. Stadermann,Thomas Stephan,Julien Stodolna,Stephen R. Sutton,Mario Trieloff,Peter Tsou,Tolek Tyliszczak,Bart Vekemans,Laszlo Vincze,Joshua Von Korff,Naomi Wordsworth,Daniel Zevin,Michael E. Zolensky +65 more
TL;DR: The Stardust Interstellar Dust Collector captured seven particles and returned to Earth for laboratory analysis have features consistent with an origin in the contemporary interstellar dust stream and more than 50 spacecraft debris particles were also identified as discussed by the authors.
Journal ArticleDOI
The Stardust Mission: Analyzing Samples from the Edge of the Solar System
TL;DR: In this article, the authors show that the cold regions of the early Solar System were not isolated and were not a refuge where interstellar materials could commonly survive, and that the rocky components in primitive asteroids and comets may differ because asteroid formation was dominated by local materials, whereas comets formed from mixed materials, many of which were transported from very distant locations.
Journal ArticleDOI
Space science applications for conducting polymer particles: synthetic mimics for cosmic dust and micrometeorites
TL;DR: In this case, the sacrificial polypyrrole overlayer simply provides a sensitive spectroscopic signature (rather than a conductive overlayer), and the scientific findings have important implications for the detection of organic dust grains during the Stardust space mission.
Journal ArticleDOI
Stardust Interstellar Preliminary Examination IV: Scanning transmission X-ray microscopy analyses of impact features in the Stardust Interstellar Dust Collector
Anna L. Butterworth,Andrew J. Westphal,Tolek Tyliszczak,Zack Gainsforth,Julien Stodolna,D. Frank,Carlton Allen,David Anderson,Asna Ansari,Saša Bajt,Ron K. Bastien,Nabil Bassim,Hans A. Bechtel,Janet Borg,Frank E. Brenker,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,George J. Flynn,Eberhard Grün,Philipp R. Heck,Jon K. Hillier,Peter Hoppe,Bruce Hudson,Joachim Huth,Brit Hvide,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Hugues Leroux,Ariel Leonard,R. Lettieri,William Marchant,Larry R. Nittler,Ryan C. Ogliore,Wei Ja Ong,Frank Postberg,Mark C. Price,Scott A. Sandford,Juan-Angel Sans Tresseras,Sylvia Schmitz,Tom Schoonjans,Geert Silversmit,Alexandre Simionovici,Vicente A. Solé,Ralf Srama,Frank J. Stadermann,Thomas Stephan,Veerle Sterken,Veerle Sterken,Veerle Sterken,Rhonda M. Stroud,Steven Sutton,Mario Trieloff,Peter Tsou,Akira Tsuchiyama,Bart Vekemans,Laszlo Vincze,Joshua Von Korff,Naomi Wordsworth,Daniel Zevin,Michael E. Zolensky +69 more
TL;DR: In this paper, the authors report the quantitative characterization by synchrotron soft X-ray spectroscopy of 31 potential impact features in the aerogel capture medium of the Stardust Interstellar Dust Collector.
Journal ArticleDOI
Stardust Interstellar Preliminary Examination IX: High-speed interstellar dust analog capture in Stardust flight-spare aerogel
Frank Postberg,Frank Postberg,Jon K. Hillier,S. P. Armes,S. Bugiel,S. Bugiel,Anna L. Butterworth,Damien Dupin,Lee A. Fielding,Syuji Fujii,Zack Gainsforth,E. Gruen,E. Gruen,Y. W. Li,Y. W. Li,Y. W. Li,Ralf Srama,Veerle Sterken,Veerle Sterken,Veerle Sterken,Julien Stodolna,Mario Trieloff,Andrew J. Westphal,C. Achilles,Carlton Allen,Asna Ansari,Saša Bajt,Nabil Bassim,Ron K. Bastien,Hans A. Bechtel,Janet Borg,Frank E. Brenker,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Hitesh Changela,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,George J. Flynn,D. Frank,Philipp R. Heck,Peter Hoppe,Gary R. Huss,Joachim Huth,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Ariel Leonard,Hugues Leroux,R. Lettieri,William Marchant,Larry R. Nittler,Ryan C. Ogliore,Wei Ja Ong,Mark C. Price,Scott A. Sandford,J.-A. Sans Tressaras,Sylvia Schmitz,Tom Schoonjans,Kate Schreiber,Geert Silversmit,Alexandre Simionovici,Vicente A. Solé,Frank J. Stadermann,Thomas Stephan,Rhonda M. Stroud,Steven Sutton,Peter Tsou,Akira Tsuchiyama,T. Tyliczszak,Bart Vekemans,Laszlo Vincze,Daniel Zevin,Michael E. Zolensky +79 more
TL;DR: In this paper, the results of laboratory hypervelocity impact experiments, during which cosmic dust analog particles (diameters of between 0.2 and 0.4 mu m), composed of olivine, orthopyroxene, or an organic polymer, were accelerated onto Stardust flight-spare low-density (approximately 0.01 g cm(-3)) silica aerogel.
References
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Journal ArticleDOI
Wild 2 and interstellar sample collection and Earth return
TL;DR: The Stardust aerogel collector accomplishes Stardust's primary science and will be returned to Earth with its captured samples on 15 January 2006 in a reentry capsule as mentioned in this paper.
Journal ArticleDOI
Prediction of the in-situ dust measurements of the stardust mission to comet 81P⧸Wild 2
TL;DR: In this article, the authors predict the amount of cometary, interplanetary, and interstellar cosmic dust that is to be measured by the Cometary and Interstellar Dust Analyzer (CIDA) and the aerogel collector on board the Stardust spacecraft during its fly-by of comet P⧸Wild 2 and during the inter-planetary cruise phase.
Journal ArticleDOI
Final reports of the Stardust Interstellar Preliminary Examination
Andrew J. Westphal,Hans A. Bechtel,Frank E. Brenker,Anna L. Butterworth,George J. Flynn,D. Frank,Zack Gainsforth,Jon K. Hillier,Frank Postberg,Alexandre Simionovici,Veerle Sterken,Veerle Sterken,Veerle Sterken,Rhonda M. Stroud,Carlton Allen,David Anderson,Asna Ansari,Saša Bajt,Ron K. Bastien,Nabil Bassim,Janet Borg,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,Eberhard Grün,Philipp R. Heck,Peter Hoppe,Bruce Hudson,Joachim Huth,Brit Hvide,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Hugues Leroux,Ariel Leonard,R. Lettieri,William Marchant,Larry R. Nittler,Ryan C. Ogliore,Wei Ja Ong,Mark C. Price,Scott A. Sandford,Juan-Angel Sans Tresseras,Sylvia Schmitz,Tom Schoonjans,Geert Silversmit,Vicente A. Solé,Ralf Srama,Frank J. Stadermann,Thomas Stephan,Julien Stodolna,Steven Sutton,Mario Trieloff,Peter Tsou,Akira Tsuchiyama,Tolek Tyliszczak,Bart Vekemans,Laszlo Vincze,Joshua Von Korff,Naomi Wordsworth,Daniel Zevin,Michael E. Zolensky +69 more
TL;DR: The results from the preliminary examination of this collection, the Stardust Interstellar Preliminary Examination (ISPE), were presented in this article, where extraterrestrial materials were found 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.
Journal ArticleDOI
Stardust Interstellar Preliminary Examination X: Impact speeds and directions of interstellar grains on the Stardust dust collector
Veerle Sterken,Veerle Sterken,Andrew J. Westphal,Nicolas Altobelli,Eberhard Grün,Jon K. Hillier,Frank Postberg,Ralf Srama,Carlton Allen,David Anderson,Asna Ansari,Saša Bajt,R. Bastien,Nabil Bassim,Hans A. Bechtel,Janet Borg,Frank E. Brenker,John Bridges,Donald E. Brownlee,Mark J. Burchell,Manfred Burghammer,Anna L. Butterworth,Hitesh Changela,Peter Cloetens,Andrew M. Davis,Ryan Doll,Christine Floss,George J. Flynn,D. Frank,Zack Gainsforth,Philipp R. Heck,Peter Hoppe,Bruce Hudson,Joachim Huth,Brit Hvide,Anton T. Kearsley,Ashley J. King,Barry Lai,Jan Leitner,Laurence Lemelle,Hugues Leroux,Ariel Leonard,R. Lettieri,William Marchant,Larry R. Nittler,Ryan C. Ogliore,Wei Ja Ong,Mark C. Price,Scott A. Sandford,Juan-Angel Sans Tresseras,Sylvia Schmitz,Tom Schoonjans,Geert Silversmit,Alexandre Simionovici,Vicente A. Solé,Thomas Stephan,Julien Stodolna,Rhonda M. Stroud,Steven Sutton,Mario Trieloff,Peter Tsou,Akira Tsuchiyama,Tolek Tyliszczak,Bart Vekemans,Laszlo Vincze,Joshua Von Korff,Naomi Wordsworth,Daniel Zevin,Michael E. Zolensky +68 more
TL;DR: In this paper, the trajectories of ISD in the solar system and the distribution of the impact speeds, directions, and flux of the ISD particles on the Stardust Interstellar Dust Collector during the two collection periods of the mission were predicted.
Posted Content
Three years of Ulysses dust data: 1993 to 1995
H. Krüger,Eberhard Grün,Markus Landgraf,M. Baguhl,Stanley F. Dermott,Hugo Fechtig,Bo Å. S. Gustafson,Douglas P. Hamilton,M. S. Hanner,Mihaly Horanyi,Jochen Kissel,Bertil Anders Lindblad,D. Linkert,G. Linkert,Ingrid Mann,J. A. M. McDonnell,Gregor E. Morfill,C. A. Polanskey,Gerhard Schwehm,Ralf Srama,H. A. Zook +20 more
TL;DR: Grun et al. as mentioned in this paper published and analyzed the complete data set of 509 recorded impacts of dust particles with masses between $10-16$ g to $10−7$ g.
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