Westphal, Andrew J.,
Anderson, David,
Butterworth, Anna L.,
Frank, David R.,
Lettieri, Robert,
Marchant, William,
Von Korff, Joshua,
Zevin, Daniel,
Ardizzone, Augusto,
Campanile, Antonella,
and others.
Capraro, Michael,
Courtney, Kevin,
Criswell, Mitchell N.,
Crumpler, Dixon,
Cwik, Robert,
Gray, Fred Jacob,
Hudson, Bruce,
Imada, Guy,
Karr, Joel,
Wah, Lily Lau Wan,
Mazzucato, Michele,
Motta, Pier Giorgio,
Rigamonti, Carlo,
Spencer, Ronald C.,
Woodrough, Stephens B.,
Santoni, Irene Cimmino,
Sperry, Gerry,
Terry, Jean-Noel,
Wordsworth, Naomi,
Yahnke, Tom,
Allen, Carlton,
Ansari, Asna,
Bajt, Saša,
Bastien, Ron K.,
Bassim, Nabil,
Bechtel, Hans A.,
Borg, Janet,
Brenker, Frank E.,
Bridges, John,
Brownlee, Donald E.,
Burchell, Mark J.,
Burghammer, Manfred,
Changela, Hitesh,
Cloetens, Peter,
Davis, Andrew M.,
Doll, Ryan,
Floss, Christine,
Flynn, George,
Gainsforth, Zack,
Grün, Eberhard,
Heck, Philipp R.,
Hillier, Jon K.,
Hoppe, Peter,
Huth, Joachim,
Hvide, Brit,
Kearsley, Anton,
King, Ashley J.,
Lai, Barry,
Leitner, Jan,
Lemelle, Laurence,
Leroux, Hugues,
Leonard, Ariel,
Nittler, Larry R.,
Ogliore, Ryan,
Ong, Wei Ja,
Postberg, Frank,
Price, Mark C.,
Sandford, Scott A.,
Tresseras, Juan-Angel Sans,
Schmitz, Sylvia,
Schoonjans, Tom,
Silversmit, Geert,
Simionovici, Alexandre S.,
Solé, Vicente A.,
Srama, Ralf,
Stephan, Thomas,
Sterken, Veerle J.,
Stodolna, Julien,
Stroud, Rhonda M.,
Sutton, Steven,
Trieloff, Mario,
Tsou, Peter,
Tsuchiyama, Akira,
Tyliszczak, Tolek,
Vekemans, Bart,
Vincze, Laszlo,
and
Zolensky, Michael E.
(hide)
(2014)
Stardust Interstellar Preliminary Examination I: Identification of tracks in aerogel.
Meteoritics and Planetary Science,
49
(9).
pp. 1509-1521.
ISSN 1086-9379.
(doi:10.1111/maps.12168)
(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)
(KAR id:59992)
|
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.
|
Official URL:
http://doi.org/10.1111/maps.12168 |
Abstract
Here, we report the identification of 69 tracks in approximately 250 cm2 of aerogel collectors of the Stardust Interstellar Dust Collector. We identified these tracks through Stardust@home, a distributed internet-based virtual microscope and search engine, in which > 30,000 amateur scientists collectively performed >9 × 107 searches on approximately 106 fields of view. Using calibration images, we measured individual detection efficiency, and found that the individual detection efficiency for tracks > 2.5 ?m in diameter was >0.6, and was >0.75 for tracks >3 ?m in diameter. Because most fields of view were searched >30 times, 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. The actual 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, the detection efficiency of these tracks was lower than detection efficiency of calibrations presented in training, testing, and ongoing calibration. Nevertheless, as calibration images based 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 of identification of tracks of hypervelocity projectiles captured in aerogel.
University of Kent Author Information
Burchell, Mark J..
Hillier, Jon K..
Price, Mark C..
- Depositors only (login required):
https://orcid.org/0000-0002-2680-8943
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