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Optical Observations of Comet 67P/Churyumov-Gerasimenko

Weiler, M. and Rauer, H. and Knollenberg, J. and Helbert, J. (2004) Optical Observations of Comet 67P/Churyumov-Gerasimenko. 1st General Assembly of the European Geosciences Union, Nice, France, 25-30 April 2004. ISSN 1607-7962

Full text not available from this repository.

Abstract

From optical longsplit spectra of comet 67P(Churyumov-Gerasimenko, obtained in February 1996, a CN production rate of (1.4 ± 0.4)· 10_25 l/sec was determined. From the continuum flux in the spectra the dust color and activity was determined. The dust color was neutral between 4070 Å and 4600 Å and the afrho parameter was (428 ± 60) cm. The production rate and Afrho value were similar to the values during the 1982 perihelion passage at similar heliocentric distances, indicating that the activity of comet 67P/Churyumov-Gerasimenko did not change significantly during recent orbital passages. The dust mass production rates were computed and a high mean dust to gas mass ratio of 4.8 was derived. R-filter images obtained in March 2003 were used to study the dust coma morphology. These images revealed the presence of two jet structures in the coma, not varying during our observation period. The orientation of the stationary structures could possibly be caused by one active area on the surface of the nucleus and an inclination of the projected rotation axis of approximately 40° with respect to the orbital plane.

Item URL in elib:https://elib.dlr.de/10795/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Optical Observations of Comet 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Weiler, M.UNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIED
Knollenberg, J.UNSPECIFIEDUNSPECIFIED
Helbert, J.UNSPECIFIEDUNSPECIFIED
Date:2004
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:6
Page Range:07434
Series Name:Geophysical Research Abstracts
ISSN:1607-7962
Status:Published
Event Title:1st General Assembly of the European Geosciences Union, Nice, France, 25-30 April 2004
Organizer:EGU
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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