Pre-Impact Mid-IR and Optical Observations of Comet
9P/Tempel 1 |
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| Authors: | H-U Kaeufl T Bonev H Boehnhardt Y R Fernandez C Lisse |
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| Institution: | (1) European Southern Observatory, 85748 Garching bei Muenchen, Germany;(2) Institute of Astronomy Bulgarian Academy of Sciences, Tsarigradsko Chaussee 72, 1784 Sofia, Bulgaria;(3) Max Planck Institute for Solar System Research, 37191 Katlenburg-Lindau, Germany;(4) Institute for Astronomy, University of Hawaii, Honolulu, USA;(5) University of Maryland, JHU-APL Baltimore, Baltimore, USA |
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| Abstract: | Comet 9P/Tempel 1, the target of the Deep Impact mission, has been intensively observed for a long time period before the encounter. Pre-impact ground based monitoring of the comet was an important prerequisite for the success of the first space experiment in which a comet is treated by an artificial impact. It provided the background data needed to disentangle the features caused by the impact from variations caused by the natural activity of the comet. In this paper we present results from the ESO-monitoring of the comet, conducted in the thermal infrared and optical spectral ranges during several months before the Deep Impact encounter with the comet. |
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| Keywords: | Comet 9P/Tempel 1 cometary dust deep impact optical imaging thermal infrared |
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