DOI: 10.1126/science.1098759. Dust Measurements in the Coma of Comet 81P/Wild 2 by the Dust Flux Monitor Instrument

Dust Measurements in the Coma of Comet 81P/Wild 2 by the Dust Flux Monitor Instrument

10.1126/science.1098759

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

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 ∼6 × 10 –7 kilograms, which dominates the total collected mass.

Bibliography

Tuzzolino, A. J., Economou, T. E., Clark, B. C., Tsou, P., Brownlee, D. E., Green, S. F., McDonnell, J. A. M., McBride, N., & Colwell, M. T. S. H. (2004). Dust Measurements in the Coma of Comet 81P/Wild 2 by the Dust Flux Monitor Instrument. Science, 304(5678), 1776â1780.

Authors 9

Anthony J. Tuzzolino (first)
Thanasis E. Economou (additional)
Ben C. Clark (additional)
Peter Tsou (additional)
Donald E. Brownlee (additional)
Simon F. Green (additional)
J. A. M. McDonnell (additional)
Neil McBride (additional)
Melusine T. S. H. Colwell (additional)

References 25 Referenced 126

A. J. Tuzzolinoet al. J. Geophys. Res.108 10.1029/2003JE002086 (2003).
In each test of the onset of noisy operation the power consumption increased drastically and the spacecraft flight software generated multiple error event reports (EVRs). A software patch was implemented to turn the DFMI off if it went into a noisy state. The noise started in all counters at the same time and in the most sensitive case (m1 counter) it saturated the counter in a few seconds. Nothing similar was observed during the Wild 2 encounter: We have not seen any noise no EVRs were generated and the instrument was not turned off by the software patch. In addition the calibration performed immediately after the encounter showed nominal expected performance and the instrument was turned off before it went noisy some 2000 s after it was turned on.
More information is available at http://stardust.jpl.nasa.gov/news/news94.html.
10.1038/321278a0
J. A. Simpsonet al., in Symposium on Diversity and Similarity of Comets, Brussels, Belgium, 6 to 9 April 1987 (European Space Agency Special Publication No. 278, Paris, 1987), p. 391. / Symposium on Diversity and Similarity of Comets (1987)
J. A. Simpsonet al., Adv. Space Res.9, 259 (1989). / Adv. Space Res. (1989)
E. P. Mazetset al., Astron. Astrophys.187, 699 (1987). / Astron. Astrophys. (1987)
O. L. Vaisberget al., Astron. Astrophys.187, 753 (1987). / Astron. Astrophys. (1987)
J. A. Simpson, D. Rabinowitz, A. J. Tuzzolino, L. V. Ksanfomality, R. Z. Sagdeev, Astron. Astrophys.187, 742 (1987). / Astron. Astrophys. (1987)
10.1016/S0032-0633(02)00047-8
10.1023/A:1021501509992
More information is available at http://stardust.jpl.nasa.gov/photo/cool.html.
R. L. Newburn T. C. Duxbury D. E. Brownlee in preparation.
N. Thomas, H. U. Keller, Astron. Astrophys.187, 843 (1987). / Astron. Astrophys. (1987)
10.1016/j.icarus.2003.07.008
10.1006/icar.1999.6051
10.1126/science.1098388
J. A. M. McDonnellet al., Astron. Astrophys.187, 719 (1987). / Astron. Astrophys. (1987)
A. C. Levasseur-Regourd, N. McBride, E. Hadamcik, M. Fulle, Astron. Astrophys.348, 636 (1999). / Astron. Astrophys. (1999)
B. C. Clark et al . in preparation.
M. Hanner personal communication.
J. A. M. McDonnell, P. L. Lamy, G. S. Pankiewicz, in Comets in the Post-Halley Era, R. L. Newburn, M. Neugebauer, J. Rahe, Eds. (Kluwer, Dordrecht, Netherlands, 1991), vol. 2, pp. 1043–1073. / Comets in the Post-Halley Era (1991)
10.1086/301285
P. Tsou D. E. Brownlee S. A. Sandford F. Horz M. E. Zolensky J. Geophys. Res.108 10.1029/2003JE002109 (2003). (10.1029/2003JE002087)
We thank F. Di Donna and P. Di Donna for their important contributions to the design construction testing and calibration of the DFMI; E. Larue for construction of the DFMI PVDF sensors; and B. McKibben for support during the initial stage of the Stardust program. The University of Chicago effort was supported by Lockhead Martin Astronautics contract RF6-457089. The group at the Open University acknowledges receipt of a grant from Particle Physics and Astronomy Research Council (United Kingdom).

Dates

Type	When
Created	21 years, 2 months ago (June 17, 2004, 4:53 p.m.)
Deposited	1 year, 7 months ago (Jan. 9, 2024, 11:20 p.m.)
Indexed	4 months, 3 weeks ago (April 3, 2025, 8:32 p.m.)
Issued	21 years, 2 months ago (June 18, 2004)
Published	21 years, 2 months ago (June 18, 2004)
Published Print	21 years, 2 months ago (June 18, 2004)

Funders 0

None

BibTeX

@article{Tuzzolino_2004, title={Dust Measurements in the Coma of Comet 81P/Wild 2 by the Dust Flux Monitor Instrument}, volume={304}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1098759}, DOI={10.1126/science.1098759}, number={5678}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Tuzzolino, Anthony J. and Economou, Thanasis E. and Clark, Ben C. and Tsou, Peter and Brownlee, Donald E. and Green, Simon F. and McDonnell, J. A. M. and McBride, Neil and Colwell, Melusine T. S. H.}, year={2004}, month=jun, pages={1776–1780} }

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