Deep Impact: Observations from a Worldwide Earth-Based Campaign

K.-J. Meech (1) , N. Ageorges (2) , Michael F. A'Hearn (3) , C. Arpigny (4) , A. Ates (5) , J. Aycock (5) , S. Bagnulo (2) , J. Bailey (6) , R. Barber (7) , L. Barrera (8) , R. Barrena (9) , J. M. Bauer (10) , M. J. S. Belton (11) , F. Bensch (12) , B. Bhattacharya (13) , N. Biver (14) , G. Blake (13) , D. Bockelée-Morvan (14) , H. Boehnhardt (15) , B. P. Bonev (16) , T. Bonev (17) , M. W. Buie (18) , M.G. Burton (19) , H.M. Butner (20) , R. Cabanac (21) , R. Campbell (22) , H. Campins (23) , M.T. Capria (24) , T. Carroll (20) , F. Chaffee (22) , S.B. Charnley (25) , R. Cleis (26) , A. Coates (27) , A. Cochran (28) , P. Colom (14) , A. Conrad (22) , I.M. Coulson (20) , J. Crovisier (14) , J. Debuizer (29) , R. Dekany (13) , J. de Léon (9) , N. Dello Russo (30) , A. Delsanti (1) , M. Disanti (31) , J. Drummond (26) , L. Dundon (1) , P.B. Etzel (32) , T.L. Farnham (33) , P. Feldman (34) , Y.R. Fernández (23) , M.D. Filipovic (35) , S. Fisher , A. Fitzsimmons , D. Fong , R. Fugate (26) , H. Fujiwara , T. Fujiyoshi , R. Furusho , T. Fuse , E. Gibb , O. Groussin (36) , S. Gulkis , M. Gurwell , Edith Hadamcik (37) , 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 (38) , 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 (38) , M. Kidger (9) , D. Kinoshita , M. Knight , L. Lara , S.M. Larson , S. Lederer , C.-F. Lee , Anny Chantal Levasseur-Regourd (37) , J.Y. Li , Q.-S. Li , J. Licandro (9, 39) , 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 (40) , 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 (41, 42) , 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 (26) , G. Ruch , W. Rujopakarn , D.K. Sahu , S. Sako , I. Sakon , N. Samarasinha , J.M. Sarkissian , I. Saviane , M. Schirmer , P. Schultz , R. W. Schulz , P. Seitzer , T. Sekiguchi , F. Selman , M. Serra-Ricart , R. Sharp , R.L. Snell , C. Snodgrass , T. Stallard (43) , G. Stecklein , C. Sterken , J.A. Stüwe , S. Sugita , M. Sumner (13) , N. Suntzeff , R. Swaters , S. Takakuwa , N. Takato , J. Thomas-Osip , E. Thompson (26) , 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 (26) , 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 , Bin Yang , Y.-B. Yang , S. Yokogawa , A.C. Zook , A. Zauderer , X. Zhao , Xin Zhou , J.-M. Zucconi (44)

1 Institute for Astronomy [Honolulu]
2 ESO - European Southern Observatory [Santiago]
3 Department of Astronomy [College Park]
4 Université de Liège
5 Pomona College
6 Australian Centre for Astrobiology
7 UCL - University College of London [London]
8 UMCE - Universidad Metropolitana de Ciencias de la Educación
9 IAC - Instituto de Astrofisica de Canarias
10 JPL - Jet Propulsion Laboratory
11 Belton Space Initiatives
12 RAIUB - RadioAstronomisches Institut [Bonn]
13 CALTECH - California Institute of Technology
14 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
15 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
16 University of Toledo
17 Institute of Astronomy of the Bulgarian Academy of Sciences
18 Lowell Observatory [Flagstaff]
19 UNSW - University of New South Wales [Sydney]
20 JAC - Joint Astronomy Center
21 CFHT - Canada-France-Hawaii Telescope Corporation
22 W.M. Keck Observatory
23 UCF - University of Central Florida [Orlando]
24 IASF-Roma - Istituto di Astrofisica Spaziale e Fisica cosmica - Roma
25 ARC - NASA Ames Research Center
26 AFRL - Air Force Research Laboratory
27 MSSL - Mullard Space Science Laboratory
28 University of Texas at Austin [Austin]
29 Gemini Observatory [Southern Operations Center]
30 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
31 GSFC - NASA Goddard Space Flight Center
32 SDSU - San Diego State University
33 University of Maryland [College Park]
34 JHU - Johns Hopkins University
35 Western Sydney University
36 LAM - Laboratoire d'Astrophysique de Marseille
37 SA - Service d'aéronomie
38 ESO - European Southern Observatory
39 ING - Isaac Newton Group of Telescopes
40 Atmospheric Physics Laboratory [UCL London]
41 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
42 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
43 Department of Physics and Astronomy [UCL London]
44 LAOB - Laboratoire d'astrophysique de l'observatoire de Besançon (UMR 6091)

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.

Domaines: Planétologie et astrophysique de la terre [astro-ph.EP]; Planétologie et astrophysique de la terre [astro-ph.EP]

K.-J. Meech, N. Ageorges, Michael F. A'Hearn, C. Arpigny, A. Ates, et al.. Deep Impact: Observations from a Worldwide Earth-Based Campaign. Science, 2005, 310 (5746), pp.265-269. ⟨10.1126/science.1118978⟩. ⟨hal-00448665⟩