Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
Submitted on August 22, 2005
Accepted on September 2, 2005
The Dust Grains from 9P/Tempel 1 Before and After the Encounter with Deep Impact
David E. Harker 1*, Charles E. Woodward 2, Diane H. Wooden 3
1 Center for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Drive, Department 0424, La Jolla, CA 92093-0424, USA. 2 Department of Astronomy, University of Minnesota, 116 Church Street, SE, Minneapolis, MN 55455, USA. 3 NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035-1000, USA.
* To whom correspondence should be addressed.
David E. Harker , E-mail: dharker{at}ucsd.edu
Gemini-N observed the properties of dust ejected from the nucleusof comet 9P/Tempel 1 before and after its encounter with DeepImpact. Marked changes were seen in the 7.8 to 13 µm spectralenergy distribution and derived grain properties of the innercoma. A strong, broad silicate feature dominated by emissionfrom amorphous pyroxene, amorphous olivine, and Mg-rich crystallineolivine had developed by 1 hour after impact. The ejected dustmass is of the order 104 to 106 kg based on our models. Twenty-sixhours later the silicate feature had faded, leaving a smoothfeatureless spectrum, similar to before the impact, suggestingthat the impact did not produce a new active region releasingsmall particles on the nucleus.
The editors suggest the following Related Resources on Science sites:
In Science Magazine
RESEARCH ARTICLES
M. F. A'Hearn, M. J. S. Belton, W. A. Delamere, J. Kissel, K. P. Klaasen, L. A. McFadden, K. J. Meech, H. J. Melosh, P. H. Schultz, J. M. Sunshine, P. C. Thomas, J. Veverka, D. K. Yeomans, M. W. Baca, I. Busko, C. J. Crockett, S. M. Collins, M. Desnoyer, C. A. Eberhardy, C. M. Ernst, T. L. Farnham, L. Feaga, O. Groussin, D. Hampton, S. I. Ipatov, J.-Y. Li, D. Lindler, C. M. Lisse, N. Mastrodemos, W. M. Owen, Jr., J. E. Richardson, D. D. Wellnitz, and R. L. White (14 October 2005) Science310 (5746), 258.
[DOI: 10.1126/science.1118923] |Abstract »|Full Text »|PDF »|Supporting Online Material »
RESEARCH ARTICLES
K. J. Meech, N. Ageorges, M. F. A'Hearn, C. Arpigny, A. Ates, J. Aycock, S. Bagnulo, J. Bailey, R. Barber, L. Barrera, R. Barrena, J. M. Bauer, M. J. S. Belton, F. Bensch, B. Bhattacharya, N. Biver, G. Blake, D. Bockelée-Morvan, H. Boehnhardt, B. P. Bonev, T. Bonev, M. W. Buie, M. G. Burton, H. M. Butner, R. Cabanac, R. Campbell, H. Campins, M. T. Capria, T. Carroll, F. Chaffee, S. B. Charnley, R. Cleis, A. Coates, A. Cochran, P. Colom, A. Conrad, I. M. Coulson, J. Crovisier, J. deBuizer, R. Dekany, J. de Léon, N. Dello Russo, A. Delsanti, M. DiSanti, J. Drummond, L. Dundon, P. B. Etzel, T. L. Farnham, P. Feldman, Y. R. Fernández, M. D. Filipovic, S. Fisher, A. Fitzsimmons, D. Fong, R. Fugate, H. Fujiwara, T. Fujiyoshi, R. Furusho, T. Fuse, E. Gibb, O. Groussin, S. Gulkis, M. Gurwell, E. Hadamcik, O. Hainaut, D. Harker, D. Harrington, M. Harwit, S. Hasegawa, C. W. Hergenrother, P. Hirst, K. Hodapp, M. Honda, E. S. Howell, D. Hutsemékers, D. Iono, W.-H. Ip, W. Jackson, E. Jehin, Z. J. Jiang, G. H. Jones, P. A. Jones, T. Kadono, U. W. Kamath, H. U. Käufl, T. Kasuga, H. Kawakita, M. S. Kelley, F. Kerber, M. Kidger, D. Kinoshita, M. Knight, L. Lara, S. M. Larson, S. Lederer, C.-F. Lee, A. C. Levasseur-Regourd, J. Y. Li, Q.-S. Li, J. Licandro, Z.-Y. Lin, C. M. Lisse, G. LoCurto, A. J. Lovell, S. C. Lowry, J. Lyke, D. Lynch, J. Ma, K. Magee-Sauer, G. Maheswar, J. Manfroid, O. Marco, P. Martin, G. Melnick, S. Miller, T. Miyata, G. H. Moriarty-Schieven, N. Moskovitz, B. E. A. Mueller, M. J. Mumma, S. Muneer, D. A. Neufeld, T. Ootsubo, D. Osip, S. K. Pandea, E. Pantin, R. Paterno-Mahler, B. Patten, B. E. Penprase, A. Peck, G. Petitas, N. Pinilla-Alonso, J. Pittichova, E. Pompei, T. P. Prabhu, C. Qi, R. Rao, H. Rauer, H. Reitsema, S. D. Rodgers, P. Rodriguez, R. Ruane, G. Ruch, W. Rujopakarn, D. K. Sahu, S. Sako, I. Sakon, N. Samarasinha, J. M. Sarkissian, I. Saviane, M. Schirmer, P. Schultz, R. Schulz, P. Seitzer, T. Sekiguchi, F. Selman, M. Serra-Ricart, R. Sharp, R. L. Snell, C. Snodgrass, T. Stallard, G. Stecklein, C. Sterken, J. A. Stüwe, S. Sugita, M. Sumner, N. Suntzeff, R. Swaters, S. Takakuwa, N. Takato, J. Thomas-Osip, E. Thompson, A. T. Tokunaga, G. P. Tozzi, H. Tran, M. Troy, C. Trujillo, J. Van Cleve, R. Vasundhara, R. Vazquez, F. Vilas, G. Villanueva, K. von Braun, P. Vora, R. J. Wainscoat, K. Walsh, J. Watanabe, H. A. Weaver, W. Weaver, M. Weiler, P. R. Weissman, W. F. Welsh, D. Wilner, S. Wolk, M. Womack, D. Wooden, L. M. Woodney, C. Woodward, Z.-Y. Wu, J.-H. Wu, T. Yamashita, B. Yang, Y.-B. Yang, S. Yokogawa, A. C. Zook, A. Zauderer, X. Zhao, X. Zhou, and J.-M. Zucconi (14 October 2005) Science310 (5746), 265.
[DOI: 10.1126/science.1118978] |Abstract »|Full Text »|PDF »
REPORTS
Horst Uwe Keller, Laurent Jorda, Michael Küppers, Pedro J. Gutierrez, Stubbe F. Hviid, Jörg Knollenberg, Luisa-Maria Lara, Holger Sierks, Cesare Barbieri, Philippe Lamy, Hans Rickman, and Rafael Rodrigo (14 October 2005) Science310 (5746), 281.
[DOI: 10.1126/science.1119020] |Abstract »|Full Text »|PDF »
REPORTS
S. Sugita, T. Ootsubo, T. Kadono, M. Honda, S. Sako, T. Miyata, I. Sakon, T. Yamashita, H. Kawakita, H. Fujiwara, T. Fujiyoshi, N. Takato, T. Fuse, J. Watanabe, R. Furusho, S. Hasegawa, T. Kasuga, T. Sekiguchi, D. Kinoshita, K. J. Meech, D. H. Wooden, W. H. Ip, and M. F. A'Hearn (14 October 2005) Science310 (5746), 274.
[DOI: 10.1126/science.1119091] |Abstract »|Full Text »|PDF »|Supporting Online Material »
REPORTS
Michael J. Mumma, Michael A. DiSanti, Karen Magee-Sauer, Boncho P. Bonev, Geronimo L. Villanueva, Hideyo Kawakita, Neil Dello Russo, Erika L. Gibb, Geoffrey A. Blake, James E. Lyke, Randall D. Campbell, Joel Aycock, Al Conrad, and Grant M. Hill (14 October 2005) Science310 (5746), 270.
[DOI: 10.1126/science.1119337] |Abstract »|Full Text »|PDF »|Supporting Online Material »
A. G. Jensen, F. Markwick-Kemper, and T. P. Snow (2008)
Reviews in Mineralogy and Geochemistry
68, 55-72
|Abstract »|Full Text »|PDF »
Spitzer Spectral Observations of the Deep Impact Ejecta.
C. M. Lisse, J. VanCleve, A. C. Adams, M. F. A'Hearn, Y. R. Fernandez, T. L. Farnham, L. Armus, C. J. Grillmair, J. Ingalls, M. J. S. Belton, et al. (2006)
Science
313, 635-640
|Abstract »|Full Text »|PDF »
Deep Impact: Observations from a Worldwide Earth-Based Campaign.
K. J. Meech, N. Ageorges, M. F. A'Hearn, C. Arpigny, A. Ates, J. Aycock, S. Bagnulo, J. Bailey, R. Barber, L. Barrera, et al. (2005)
Science
310, 265-269
|Abstract »|Full Text »|PDF »
Subaru Telescope Observations of Deep Impact.
S. Sugita, T. Ootsubo, T. Kadono, M. Honda, S. Sako, T. Miyata, I. Sakon, T. Yamashita, H. Kawakita, H. Fujiwara, et al. (2005)
Science
310, 274-278
|Abstract »|Full Text »|PDF »
104 to 106 kg based on our models. Twenty-six hours later the silicate feature had faded, leaving a smooth featureless spectrum, similar to before the impact, suggesting that the impact did not produce a new active region releasing small particles on the nucleus.
