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Lin, Z. Y. and Weiler, M. and Rauer, H. and Ip, W. H. (2007) Photometry and Imaging of Comet C/2004 Q2 (Machholz) at Lulin and La Silla. Astronomy & Astrophysics, 469 (2), pp. 771-776. EDP Sciences. doi: 10.1051/0004-6361:20077286. ISSN 0004-6361.
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Abstract
Aims.We have investigated the development of the dust and gas coma of the comet C/2004 Q2 (Machholz) from December 2004 to January 2005 using observations obtained at the Lulin Observatory, Taiwan and the European Southern Observatory at La Silla, Chile. Methods.We determined the dust-activity parameter Afp and the dust color and derived Haser production rates and scale lengths of C <sub>2</sub> and NH<sub>2</sub>. An image enhancement technique was applied to study the morphology of the gas and dust coma. Results.Two jets were observed in the coma distributions of C<sub>2</sub> and CN of comet Machholz that were not formed in the dust coma. The jets showed a spiral-like structure and pointed at different position angles at different observing times. The formation of these jets can be explained by the presence of two active surface regions on a rotating cometary nucleus.
| Item URL in elib: | https://elib.dlr.de/47387/ | |||||||||||||||
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| Document Type: | Article | |||||||||||||||
| Title: | Photometry and Imaging of Comet C/2004 Q2 (Machholz) at Lulin and La Silla | |||||||||||||||
| Authors: |
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| Date: | 2007 | |||||||||||||||
| Journal or Publication Title: | Astronomy & Astrophysics | |||||||||||||||
| Open Access: | No | |||||||||||||||
| Gold Open Access: | No | |||||||||||||||
| In SCOPUS: | Yes | |||||||||||||||
| In ISI Web of Science: | Yes | |||||||||||||||
| Volume: | 469 | |||||||||||||||
| DOI : | 10.1051/0004-6361:20077286 | |||||||||||||||
| Page Range: | pp. 771-776 | |||||||||||||||
| Publisher: | EDP Sciences | |||||||||||||||
| ISSN: | 0004-6361 | |||||||||||||||
| Status: | Published | |||||||||||||||
| Keywords: | Comets, Comet Machholz | |||||||||||||||
| 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): | W - Vorhaben Extrasolare Planeten (old) | |||||||||||||||
| Location: | Berlin-Adlershof | |||||||||||||||
| Institutes and Institutions: | Institute of Planetary Research > Extrasolar Planets and Atmospheres | |||||||||||||||
| Deposited By: | Hedelt, Pascal | |||||||||||||||
| Deposited On: | 09 Jul 2007 | |||||||||||||||
| Last Modified: | 08 Mar 2018 18:22 |
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