Discovery of non-random spatial distribution of impacts in the Stardust cometary collector

被引：15

作者：

Westphal, Andrew J. ^{[1
]}

Bastien, Ronald K. ^{[2
]}

Borg, Janet ^{[3
]}

Bridges, John ^{[4
]}

Brownlee, Donald E. ^{[5
]}

Burchell, Mark J. ^{[6
]}

Cheng, Andrew F. ^{[7
]}

Clark, Benton C. ^{[8
]}

Djouadi, Zahia ^{[3
]}

Floss, Christine ^{[9
,10
]}

Franchi, Ian ^{[4
]}

Gainsforth, Zack ^{[1
]}

Graham, Giles ^{[11
]}

Green, Simon F. ^{[4
]}

Heck, Philipp R. ^{[12
]}

Horanyi, Mihaly ^{[13
]}

Hoppe, Peter ^{[12
]}

Horz, Friedrich P. ^{[2
]}

Huth, Joachim ^{[12
]}

Kearsley, Anton ^{[14
]}

Leroux, Hugues ^{[15
]}

Marhas, Kuljeet ^{[9
,10
]}

Nakamura-Messenger, Keiko ^{[2
]}

Sandford, Scott A. ^{[1
,16
]}

See, Thomas H.

Stadermann, Frank J. ^{[9
,10
]}

Teslich, Nick E. ^{[11
]}

Tsitrin, Samuel

Warren, Jack L. ^{[2
]}

Wozniakiewicz, Penelope J. ^{[14
,17
]}

Zolensky, Michael E. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[2] KT NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA

[3] Univ Paris 11, CNRS, Inst Astrophys Spatiale, UMR8617, F-91405 Orsay, France

[4] Open Univ, PSSRI, Milton Keynes MK7 6AA, Bucks, England

[5] Univ Washington, Dept Astron, Seattle, WA 98195 USA

[6] Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England

[7] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[8] Lockheed Martin Corp, Littleton, CO USA

[9] Washington Univ, Space Sci Lab, St Louis, MO 63130 USA

[10] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[11] Lawrence Livermore Natl Lab, IGPP, Livermore, CA 94550 USA

[12] Max Planck Inst Chem, D-55020 Mainz, Germany

[13] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA

[14] Nat Hist Museum, Dept Mineral, IARC, London SW7 5BD, England

[15] Univ Sci & Technol Lille, Lab Struct & Proprietes Etat Solide UMR 8008, F-59655 Villeneuve Dascq, France

[16] NASA, Ames Res Ctr, Astrophys Branch, Moffett Field, CA 94035 USA

[17] Imperial Coll London, Dept Earth Sci & Engn, IARC, London SW11 3RA, England

来源：

METEORITICS & PLANETARY SCIENCE | 2008年 / 43卷 / 1-2期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1111/j.1945-5100.2008.tb00630.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We report the discovery that impacts in the Stardust cometary collector are not distributed randomly in the collecting media, but appear to be clustered on scales smaller than similar to 10 cm. We also report the discovery of at least two populations of oblique tracks. We evaluate several hypotheses that could explain the observations. No hypothesis is consistent with all the observations, but the preponderance of evidence points toward at least one impact on the central Whipple shield of the spacecraft as the origin of both clustering and low-angle oblique tracks. High-angle oblique tracks unambiguously originate from a non-cometary impact on the spacecraft bus just forward of the collector.

引用

页码：415 / 429

页数：15

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