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Optical observations of comet 67P/Churyumov-Gerasimenko

Weiler, M. and Rauer, H. and Helbert, J. (2004) Optical observations of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 414, pp. 749-755.

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From longslit spectra obtained during the 1996 perihelion passage of Comet 67P(Churyumov-Gerasimenko, a CN production rate of (1.35 ± 0.35) x 10_25 molecules s_-1 was determined and an upper limit for the C3 production rate of 1 x 10_25 molecules s_-1 was derived. The dust color and dust activity were determined from the continuum light in the spectra. A neutral dust color was determined between 4070 Å und 4600 Å. The CN production rate and the Afp parameter, determined to (428.2 ± 59,8) cm were similar to the values of the 1982 perihelion passage, indicating that the comet's acitivity did noch change significantly in recent orbital passages. A first crude estimate of the dust production rate indicates a high dust to gas mass ratio. R-filter images taken in March 2003 were used to study the dust coma morphology. Two jet structures were seen in the coma; these structures show no variation within the observing period from March 7 to May 30, 2003. The orientation of these stationary structures suggests an inclination of the rotation axis of the nucleus of approximately 40° with respect to the orbital plane.

Item URL in elib:https://elib.dlr.de/10797/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Optical observations of comet 67P/Churyumov-Gerasimenko
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 749-755
Keywords:comets: general, comets - individual: 67P/Churyumov-Gerasimenko
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Optical Information Systems
Deposited By: Pieth, Susanne
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:17

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