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

页码：1776 / 1780

页数：5

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