Dust measurements in the coma of comet 81P/Wild 2 by the Dust Flux Monitor Instrument

被引：126
|
作者：
Tuzzolino, AJ
Economou, TE
Clark, BC
Tsou, P
Brownlee, DE
Green, SF
McDonnell, JAM
McBride, N
Colwell, MTSH
机构：
[1] Univ Chicago, Enrico Fermi Inst, Lab Astrophys & Space Res, Chicago, IL 60637 USA
[2] Lockheed Martin Astronaut, Denver, CO 80201 USA
[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[4] Univ Washington, Dept Astron & Astrophys, Seattle, WA 98195 USA
[5] Open Univ, Planetary & Space Sci Res Inst, Milton Keynes MK7 6AA, Bucks, England
来源：
SCIENCE | 2004年 / 304卷 / 5678期
关键词：
D O I：
10.1126/science.1098759
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We present measurements of the dust particle flux and mass distribution from the Stardust Dust Flux Monitor Instrument (DFMI) throughout the flyby of comet 81P/Wild 2. In the particle mass regime from 10(-14) to 10(-7) kilograms, the spacecraft encountered regions of intense swarms of particles, together with bursts of activity corresponding to clouds of particles only a few hundred meters across. This fine-scale structure can be explained by particle fragmentation. We estimate that 2800+/-500 particles of diameter 15 micrometers or larger impacted the aerogel collectors, the largest being similar to6x10(-7) kilograms, which dominates the total collected mass.
引用
收藏
页码：1776 / 1780
页数：5
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