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Deep Impact: Observations from a Worldwide Earth-Based Campaign

2005; American Association for the Advancement of Science; Volume: 310; Issue: 5746 Linguagem: Inglês

10.1126/science.1118978

1095-9203

K. J. Meech, N. Ageorges, Michael F. A’Hearn, C. Arpigny, Ali Ateş, J. Aycock, S. Bagnulo, J. Bailey, R. J. Barber, L. Barrera, R. Barrena, J. M. Bauer, M. J. S. Belton, F. Bensch, B. Bhattacharya, N. Biver, Geoffrey A. Blake, D. Bockelée-Morvan, H. Boehnhardt, B. P. Bonev, T. Bonev, M. W. Buie, Michael Burton, H. M. Butner, R. Cabanac, R. Campbell, H. Campins, M. T. Capria, T. Carroll, F. Chaffee, S. B. Charnley, R. A. Cleis, A. J. Coates, A. L. Cochran, P. Colom, Al Conrad, I. M. Coulson, J. Crovisier, J. M. DeBuizer, Richard Dekany, J. de León, N. Dello Russo, A. Delsanti, M. A. DiSanti, J. Drummond, L. Dundon, P. B. Etzel, T. L. Farnham, P. D. Feldman, Y. R. Fernández, M. D. Filipović, Steven W. Fisher, A. Fitzsimmons, Diane Fong, Robert Q. Fugate, Hideo Fujiwara, T. Fujiyoshi, Reiko Furusho, T. Fuse, E. L. Gibb, O. Groussin, S. Gulkis, Mark Gurwell, Edith Hadamcik, O. Hainaut, D. E. Harker, D. M. Harrington, Martin Harwit, Sunao Hasegawa, C. W. Hergenrother, Paul Hirst, K. W. Hodapp, Mitsuhiko Honda, E. S. Howell, Damien Hutsemékers, Daisuke Iono, W.‐H. Ip, William M. Jackson, Emmanuël Jehin, Zi-jing Jiang, G. H. Jones, P. A. Jones, T. Kadono, U. W. Kamath, H. U. Käufl, Toshihiro Kasuga, Hideyo Kawakita, Michael S. P. Kelley, F. Kerber, M. Kidger, Daisuke Kinoshita, Matthew M. Knight, L. M. Lara, S. M. Larson, Susan M. Lederer, Chin‐Fei Lee, A. C. Levasseur-Regourd, J. Y. Li, Q.-S. Li, J. Licandro, Zhong-Yi Lin, C. M. Lisse, G. Lo Curto, A. J. Lovell, S. C. Lowry, James E. Lyke, D. K. Lynch, J. Ma, K. Magee‐Sauer, G. Maheswar, Jean Manfroid, Olivier Marco, Patrick Martin, Gary J. Melnick, S. Miller, Takashi Miyata, G. H. Moriarty‐Schieven, Nicholas Moskovitz, B. E. A. Mueller, M. J. Mumma, S. Muneer, David A. Neufeld, Takafumi Ootsubo, D. J. Osip, S. K. Pandea, É. Pantin, Rachel Paterno-Mahler, B. M. Patten, Bryan E. Penprase, A. Peck, G. Petitas, N. Pinilla-Alonso, J. Pittichová, E. Pompei, T. P. Prabhu, Chunhua Qi, Ramprasad Rao, H. Rauer, H. J. Reitsema, Scott Rodgers, P. M. Rodríguez-Pascual, R. E. Ruane, Gerald T. Ruch, W. Rujopakarn, D. K. Sahu, Shigeyuki Sako, Itsuki Sakon, Nalin H. Samarasinha, John Sarkissian, I. Saviane, M. Schirmer, P. H. Schultz, R. Schulz, Patrick Seitzer, Tomohiko Sekiguchi, F. Selman, M. Serra‐Ricart, R. Sharp, R. L. Snell, C. Snodgrass, Tom Stallard, Gordon Stecklein, C. Sterken, J. A. Stüwe, Seiji Sugita, Matthew Sumner, N. B. Suntzeff, R. Swaters, S. Takakuwa, N. Takato, J. E. Thomas-Osip, Elizabeth C. Thompson, A. T. Tokunaga, G. P. Tozzi, Hoang-Son Tran, Mitchell Troy, Chadwick A. Trujillo, Jeffrey Van Cleve, R. Vasundhara, R. Vázquez, F. Vilas, Gerónimo Villanueva, Kaspar von Braun, Patrick M. Vora, R. J. Wainscoat, K. J. Walsh, J. Watanabe, H. A. Weaver, W. B. Weaver, M. Weiler, P. R. Weissman, William F. Welsh, David J. Wilner, S. J. Wolk, M. Womack, D. H. Wooden, L. M. Woodney, C. E. Woodward, Zhuoting Wu, Jenny Wu, T. Yamashita, Bin Yang, Yuguo Yang, Shinji Yokogawa, A. C. Zook, A. Zauderer, Xin Zhao, X. Zhou, J.-M. Zucconi,

Stellar, planetary, and galactic studies

On 4 July 2005, many observatories around the world and in space observed the collision of Deep Impact with comet 9P/Tempel 1 or its aftermath. This was an unprecedented coordinated observational campaign. These data show that (i) there was new material after impact that was compositionally different from that seen before impact; (ii) the ratio of dust mass to gas mass in the ejecta was much larger than before impact; (iii) the new activity did not last more than a few days, and by 9 July the comet's behavior was indistinguishable from its pre-impact behavior; and (iv) there were interesting transient phenomena that may be correlated with cratering physics.