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., and others. (2011) EPOXI: Comet 103P/Hartley 2 observations from a worldwide campaign. Astrophysical Journal Letters, 734 (1 PT2). (L1) 1-9. ISSN 2041-8205. E-ISSN 2041-8213. (doi:10.1088/2041-8205/734/1/L1) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:52284)
The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. | |
Official URL: http://dx.doi.org/10.1088/2041-8205/734/1/L1 |
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 16.4hr. Starting in 2010 August the period changed from 16.6hr to near 19hr 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. © 2011. The American Astronomical Society. All rights reserved.
Item Type: | Article |
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DOI/Identification number: | 10.1088/2041-8205/734/1/L1 |
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Uncontrolled keywords: | comets: individual (103P/Hartley 2) |
Subjects: | Q Science > QB Astronomy |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Depositing User: | Stephen Lowry |
Date Deposited: | 08 Dec 2015 22:45 UTC |
Last Modified: | 05 Nov 2024 10:38 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/52284 (The current URI for this page, for reference purposes) |
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