Abbreviated Journal Title
Astrophys. J. Lett.
Keywords
comets: individual (103P/Hartley 2); MIDINFRARED SPECTROMETER; SPACE-TELESCOPE; HERSCHEL; PERFORMANCE; PHOTOMETRY; MISSION; NUCLEUS; IMAGER; MIRSI; DUST; Astronomy & Astrophysics
Abstract
Earth- and space-based observations provide synergistic information for space mission encounters by providing data over longer timescales, at different wavelengths and using techniques that are impossible with an in situ flyby. We report here such observations in support of the EPOXI spacecraft flyby of comet 103P/Hartley 2. The nucleus is small and dark, and exhibited a very rapidly changing rotation period. Prior to the onset of activity, the period was similar to 16.4 hr. Starting in 2010 August the period changed from 16.6 hr to near 19 hr in December. With respect to dust composition, most volatiles and carbon and nitrogen isotope ratios, the comet is similar to other Jupiter-family comets. What is unusual is the dominance of CO2-driven activity near perihelion, which likely persists out to aphelion. Near perihelion the comet nucleus was surrounded by a large halo of water-ice grains that contributed significantly to the total water production.
Journal Title
Astrophysical Journal Letters
Volume
734
Issue/Number
1
Publication Date
1-1-2011
Document Type
Article
Language
English
First Page
9
WOS Identifier
ISSN
2041-8205
Recommended Citation
Meech, K. J.; A' Hearn, M. F.; Adams, J. A.; Bacci, P.; Bai, J.; Barrera, L.; Battelino, M.; Bauer, J. M.; Becklin, E.; Bhatt, B.; Biver, N.; Bockelée-Morvan, D.; Bodewits, D.; Böhnhardt, H.; Boissier, J.; Bonev, B. P.; Borghini, W.; Brucato, J. R.; Bryssinck, E.; Buie, M. W.; Canovas, H.; Castellano, D.; Charnley, S. B.; Chen, W. P.; Chiang, P.; Choi, Y. -J.; Christian, D. J.; Chuang, Y. -L.; Cochran, A. L.; Colom, P.; Combi, M. R.; Coulson, I. M.; Crovisier, J.; Russo, N. Dello; Denneri, K.; DeWahl, K.; DiSanti, M. A.; Facchini, M.; Farnham, T. L.; Fernández, Y.; Florén, H. G.; Frisk, U.; Fujiyoshi, T.; Furusho, R.; Fuse, T.; Galli, G.; García-Hernández, D. A.; Gersch, A.; Getu, Z.; Gibb, E. L.; Gillon, M.; Guido, E.; Guillermo, R. A.; Hadamcik, E.; Hainaut, O.; Hammel, H. B.; Harker, D. E.; Harmon, J. K.; Harris, W. M.; Hartogh, P.; Hashimoto, M.; Häusler, B.; Herter, T.; Hjalmarson, A.; Holland, S. T.; Honda, M.; Hosseini, S.; Howell, E. S.; Howes, N.; Hsieh, H. H.; Hsiao, H. -Y.; Hutsemékers, D.; Immler, S. M.; Jackson, W. M.; Jeffers, S. V.; Jehin, E.; Jones, T. J.; De Juan Ovelar, M.; Kaluna, H. M.; Karlsson, T.; Kawakita, H.; Keane, J. V.; Keller, L. D.; Kelley, M. S.; Kinoshita, D.; Kiselev, N. N.; Kleyna, J.; Knight, M. M.; Kobayashi, H.; Kobulnicky, H. A.; Kolokolova, L.; Kreinv, M.; Kuan, Y. -J.; Küppers, M.; Lacruz, J. M.; Landsman, W. B.; Lara, L. M.; Lecacheux, A.; Levasseur-Regourd, A. C.; Li, B.; Licandro, J.; Ligustri, R.; -Y., Z. Lin; Lippi, M.; Lis, D. C.; Lisse, C. M.; Lovell, A. J.; Lowry, S. C.; Lu, H.; Lundin, S.; Magee-Sauer, K.; Magain, P.; Manfroid, J.; Epifani, E. Mazzotta; McKay, A.; Melita, M. D.; Mikuz, H.; Milam, S. N.; Milani, G.; Moreno, R.; Mueller, B. E. A.; Mumma, M. J.; Nciolini, M.; Nolan, M. C.; Nordh, H. L.; Nowajewski, P. B.; Team, Odin; Ootsubo, T.; Paganini, L.; Perrella, C.; Pittichová, J.; Prosperi, E.; Radeva, Y. L.; Reach, W. T.; Remijan, A. J.; Rengel, M.; Riesen, T. E.; Rodenhuis, M.; Rodríguez, D. P.; Russell, R. W.; Sahu, D. K.; Samarasinha, N. H.; Caso, A. Sánchez; Sandqvist, A.; Sarid, G.; Sato, M.; Schleicher, D. G.; Schwieterman, E. W.; Sen, A. K.; Shenoy, D.; Shi, J. -C.; Shinnaka, Y.; Skvarc, J.; Snodgrass, C.; Sitko, M. l.; Sonnett, S.; Sosseini, S.; Sostero, G.; Sugita, S.; Swinyard, B. M.; Szutowicz, S.; Takato, N.; Tanga, P.; Taylor, P. A.; Tozzi, G. -P.; Trabatti, R.; Trigo-Rodríguez, J. M.; Tubiana, C.; De Val-Borro, M.; Vacca, W.; Vandenbussche, B.; Vaubaillion, J.; Velichko, F. P.; Velichko, S. F.; Vervack, R. J. Jr.; Vidal-Nunez, M. J.; Villanueva, G. L.; Vinante, C.; Vincent, J. -B.; Wang, M.; Wasserman, L. H.; Watanbe, J.; Weaver, H. A.; Weissman, P. R.; Wolk, S.; Wooden, D. H.; Woodard, C. E.; Yamaguchi, M.; Yamashita, T.; Yanamandra-Fischer, P. A.; Yang, B.; Yao, J. -S.; Yeomans, D. K.; Zenn, T.; Zhao, H.; and Ziffer, J. E., "Epoxi: Comet 103p-Hartley 2 Observations from A Worldwide Campaign" (2011). Faculty Bibliography 2010s. 1657.
https://stars.library.ucf.edu/facultybib2010/1657
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